fix: apply elevation color thresholds on radar page

LocalElevationThresholds was provided inside MainScreen, but RadarDestination
is a root-level sibling entry in NavRoot's NavDisplay, so the radar page's
top bar fell outside the CompositionLocal scope and always used the default
15/45 thresholds instead of the user-configured ones.

Hoist the CompositionLocalProvider to NavRoot so both the tab content and
the root-level RadarDestination read the user's low/high elevation
thresholds, and drop the now-redundant provider from MainScreen.

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Setup Java
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           distribution: 'temurin'
           java-version: '21'

.gitignore

@@ -64,3 +64,4 @@ fastlane/readme.md
 /app/release/output-metadata.json
 /app/release/
 /.kotlin/sessions/
+.hermes/

README.md

@@ -36,10 +36,10 @@ It is now and always will be completely ad-free and open-source.
 
 ## Star History
 
-<a href="https://www.star-history.com/?repos=rt-bishop%2FLook4Sat&type=timeline&legend=top-left">
+<a href="https://star-history.dera.page/#rt-bishop/Look4Sat&type=timeline&legend=top-left">
  <picture>
-   <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/chart?repos=rt-bishop/Look4Sat&type=timeline&theme=dark&legend=top-left" />
-   <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/chart?repos=rt-bishop/Look4Sat&type=timeline&legend=top-left" />
-   <img alt="Star History Chart" src="https://api.star-history.com/chart?repos=rt-bishop/Look4Sat&type=timeline&legend=top-left" />
+   <source media="(prefers-color-scheme: dark)" srcset="https://star-history.dera.page/svg?repos=rt-bishop/Look4Sat&type=timeline&theme=dark&legend=top-left" />
+   <source media="(prefers-color-scheme: light)" srcset="https://star-history.dera.page/svg?repos=rt-bishop/Look4Sat&type=timeline&legend=top-left" />
+   <img alt="Star History Chart" src="https://star-history.dera.page/svg?repos=rt-bishop/Look4Sat&type=timeline&legend=top-left" />
  </picture>
 </a>

app/src/main/java/com/rtbishop/look4sat/MainActivity.kt

@@ -49,7 +49,7 @@ class MainActivity : ComponentActivity() {
         super.onCreate(savedInstanceState)
         observeNightFilterState()
         setContent {
-            MainTheme(isDarkTheme = true) { MainScreen() }
+            MainTheme(isDarkTheme = true) { NavRoot() }
         }
     }
 

app/src/main/java/com/rtbishop/look4sat/MainScreen.kt

@@ -25,8 +25,6 @@ import androidx.compose.animation.core.rememberInfiniteTransition
 import androidx.compose.animation.core.tween
 import androidx.compose.animation.fadeIn
 import androidx.compose.animation.fadeOut
-import androidx.compose.animation.scaleIn
-import androidx.compose.animation.scaleOut
 import androidx.compose.animation.slideInHorizontally
 import androidx.compose.animation.slideOutHorizontally
 import androidx.compose.animation.togetherWith
@@ -44,7 +42,7 @@ import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.material3.adaptive.navigationsuite.NavigationSuiteDefaults
 import androidx.compose.material3.adaptive.navigationsuite.NavigationSuiteScaffold
@@ -70,6 +68,8 @@ import androidx.navigation3.runtime.rememberNavBackStack
 import androidx.navigation3.runtime.rememberSaveableStateHolderNavEntryDecorator
 import androidx.navigation3.ui.NavDisplay
 import com.rtbishop.look4sat.core.domain.repository.IContainerProvider
+import com.rtbishop.look4sat.core.presentation.R
+import com.rtbishop.look4sat.core.domain.repository.RadioTrackingState
 import com.rtbishop.look4sat.core.presentation.DeeplinkResolver
 import com.rtbishop.look4sat.core.presentation.ElevationThresholds
 import com.rtbishop.look4sat.core.presentation.LocalElevationThresholds
@@ -82,178 +82,196 @@ import com.rtbishop.look4sat.feature.passes.PassesDestination
 import com.rtbishop.look4sat.feature.radar.RadarDestination
 import com.rtbishop.look4sat.feature.satellites.SatellitesDestination
 import com.rtbishop.look4sat.feature.settings.SettingsDestination
+import com.rtbishop.look4sat.feature.status.SatStatusDestination
 
 @Composable
 fun NavRoot(deeplink: String? = null) {
     val rootBackStack = rememberNavBackStack(Screen.Passes)
     val deeplinkResolver = DeeplinkResolver()
     LaunchedEffect(deeplink) {
-        deeplink?.let {
-            val destination = deeplinkResolver.resolve(it) // rootBackStack.clear()
-            rootBackStack.add(destination)
-        }
+        deeplink?.let { rootBackStack.add(deeplinkResolver.resolve(it)) }
     }
     val navigateBack: () -> Unit = { rootBackStack.removeLastOrNull() }
-    val slideInTransition = slideInHorizontally(initialOffsetX = { it }) togetherWith scaleOut(targetScale = 0.9f)
-    val slideOutTransition = scaleIn(initialScale = 0.9f) togetherWith slideOutHorizontally(targetOffsetX = { it })
-    NavDisplay(
-        modifier = Modifier.fillMaxSize(),
-        backStack = rootBackStack,
-        onBack = navigateBack,
-        transitionSpec = { slideInTransition },
-        popTransitionSpec = { slideOutTransition },
-        predictivePopTransitionSpec = { slideOutTransition },
-        entryDecorators = listOf(
-            rememberSaveableStateHolderNavEntryDecorator(), // Required for saving Compose state per entry
-            rememberViewModelStoreNavEntryDecorator() // Required for ViewModel scoping per entry
-        ),
-        entryProvider = entryProvider {
-            entry<Screen.Passes> { MainScreen(navigateToRadar = { rootBackStack.add(RadarDestination) }) }
-            entry<RadarDestination> {
-                Scaffold { innerPadding ->
-                    RadarDestination(navigateUp = navigateBack)
-                    innerPadding.calculateTopPadding()
-                }
-            }
-        }
-    )
-}
-
-@Composable
-fun MainScreen(navigateToRadar: () -> Unit = {}) {
-    val backStack = rememberNavBackStack(Screen.Passes)
-    val currentKey = backStack.lastOrNull()
-    val navigateBack: () -> Unit = { backStack.removeLastOrNull() }
-    val fadeTransition = fadeIn(animationSpec = tween(350)) togetherWith fadeOut(animationSpec = tween(350))
-    val navItems = listOf(Screen.Satellites, Screen.Passes, Screen.Radar, Screen.Map, Screen.Settings)
-
+    val navigateToRadar: () -> Unit = { rootBackStack.add(RadarDestination) }
+    // Incoming screen slides in from the right, outgoing drifts left at 1/3 speed (API35+ style)
+    val pushTransition = slideInHorizontally(tween(300)) { it } togetherWith
+        slideOutHorizontally(tween(300)) { -it / 3 }
+    // Reverse: outgoing slides out to the right, incoming drifts in from the left
+    val popTransition = slideInHorizontally(tween(300)) { -it / 3 } togetherWith
+        slideOutHorizontally(tween(300)) { it }
+    // Elevation color thresholds must be provided at the root level so that BOTH
+    // the tab content (MainScreen) and the root-level RadarDestination see the
+    // user's custom thresholds. RadarDestination is a sibling entry of MainScreen
+    // in this NavDisplay, so a provider inside MainScreen never reaches it.
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
-    val trackingState by container.radioTrackingService.state.collectAsStateWithLifecycle()
     val otherSettings by container.settingsRepo.otherSettings.collectAsStateWithLifecycle()
-
     CompositionLocalProvider(
         LocalElevationThresholds provides ElevationThresholds(
             low = otherSettings.lowElevation,
             high = otherSettings.highElevation
         )
     ) {
-        NavigationSuiteScaffold(
-            navigationSuiteItems = {
-                navItems.forEach { screen ->
-                    val isSelected = when (currentKey) {
-                        is Screen.Satellites -> screen is Screen.Satellites
-                        is Screen.Passes -> screen is Screen.Passes
-                        is Screen.Radar -> screen is Screen.Radar
-                        is Screen.Map -> screen is Screen.Map
-                        is Screen.Settings -> screen is Screen.Settings
-                        else -> false
-                    }
-                    item(
-                        icon = { Icon(painterResource(screen.iconResId), stringResource(screen.titleResId)) },
-                        label = { Text(stringResource(screen.titleResId)) },
-                        selected = isSelected,
-                        onClick = {
-                            if (isSelected) return@item
-                            while (backStack.size > 1) backStack.removeAt(backStack.size - 1)
-                            if (screen !is Screen.Passes) backStack.add(screen)
-                        }
-                    )
-                }
-            },
-            navigationSuiteColors = NavigationSuiteDefaults.colors(
-                navigationRailContainerColor = MaterialTheme.colorScheme.surfaceContainer
+        NavDisplay(
+            modifier = Modifier.fillMaxSize(),
+            backStack = rootBackStack,
+            onBack = navigateBack,
+            transitionSpec = { pushTransition },
+            popTransitionSpec = { popTransition },
+            predictivePopTransitionSpec = { popTransition },
+            entryDecorators = listOf(
+                rememberSaveableStateHolderNavEntryDecorator(),
+                rememberViewModelStoreNavEntryDecorator()
             ),
-            layoutType = when {
-                !hasEnoughHeight() && hasEnoughWidth() -> NavigationSuiteType.NavigationRail
-                !hasEnoughWidth() -> NavigationSuiteType.ShortNavigationBarCompact
-                else -> NavigationSuiteType.ShortNavigationBarMedium
+            entryProvider = entryProvider {
+                entry<Screen.Passes> { MainScreen(navigateToRadar = navigateToRadar) }
+                entry<RadarDestination> {
+                    Surface(
+                        modifier = Modifier.fillMaxSize(),
+                        color = MaterialTheme.colorScheme.background
+                    ) {
+                        RadarDestination(navigateUp = navigateBack)
+                    }
+                }
             }
-        ) {
-            Column {
-                NavDisplay(
-                    backStack = backStack,
-                    modifier = Modifier.weight(1f),
-                    onBack = navigateBack,
-                    transitionSpec = { fadeTransition },
-                    popTransitionSpec = { fadeTransition },
-                    predictivePopTransitionSpec = { fadeTransition },
-                    entryDecorators = listOf(
-                        // Required for saving Compose state per entry
-                        rememberSaveableStateHolderNavEntryDecorator(),
-                        // Required for ViewModel scoping per entry
-                        rememberViewModelStoreNavEntryDecorator()
-                    ),
-                    entryProvider = entryProvider {
-                        entry<Screen.Satellites> {
-                            SatellitesDestination(navigateUp = navigateBack)
+        )
+    }
+}
+
+@Composable
+private fun MainScreen(navigateToRadar: () -> Unit = {}) {
+    val context = LocalContext.current
+    val container = (context.applicationContext as IContainerProvider).getMainContainer()
+    val trackingState by container.radioTrackingService.state.collectAsStateWithLifecycle()
+
+    val backStack = rememberNavBackStack(Screen.Passes)
+    val currentKey = backStack.lastOrNull()
+    val navigateBack: () -> Unit = { backStack.removeLastOrNull() }
+    val fadeTransition = fadeIn(animationSpec = tween(300)) togetherWith
+        fadeOut(animationSpec = tween(300))
+    val navItems =
+        listOf(Screen.Satellites, Screen.Passes, Screen.Status, Screen.Map, Screen.Settings)
+
+    NavigationSuiteScaffold(
+        navigationSuiteItems = {
+            navItems.forEach { screen ->
+                val isSelected = when (currentKey) {
+                    is Screen.Satellites -> screen is Screen.Satellites
+                    is Screen.Passes -> screen is Screen.Passes
+                    is Screen.Status -> screen is Screen.Status
+                    is Screen.Map -> screen is Screen.Map
+                    is Screen.Settings -> screen is Screen.Settings
+                    else -> false
+                }
+                item(
+                    icon = {
+                        Icon(
+                            painter = painterResource(screen.iconResId),
+                            contentDescription = stringResource(screen.titleResId)
+                        )
+                    },
+                    label = { Text(stringResource(screen.titleResId)) },
+                    selected = isSelected,
+                    onClick = {
+                        if (isSelected) return@item
+                        while (backStack.size > 1) backStack.removeAt(backStack.size - 1)
+                        if (screen !is Screen.Passes) backStack.add(screen)
+                    }
+                )
+            }
+        },
+        navigationSuiteColors = NavigationSuiteDefaults.colors(
+            navigationRailContainerColor = MaterialTheme.colorScheme.surfaceContainer
+        ),
+        layoutType = when {
+            !hasEnoughHeight() && hasEnoughWidth() -> NavigationSuiteType.NavigationRail
+            !hasEnoughWidth() -> NavigationSuiteType.ShortNavigationBarCompact
+            else -> NavigationSuiteType.ShortNavigationBarMedium
+        }
+    ) {
+        Column {
+            NavDisplay(
+                backStack = backStack,
+                modifier = Modifier.weight(1f),
+                onBack = navigateBack,
+                transitionSpec = { fadeTransition },
+                popTransitionSpec = { fadeTransition },
+                predictivePopTransitionSpec = { fadeTransition },
+                entryDecorators = listOf(
+                    rememberSaveableStateHolderNavEntryDecorator(),
+                    rememberViewModelStoreNavEntryDecorator()
+                ),
+                entryProvider = entryProvider {
+                    entry<Screen.Satellites> {
+                        SatellitesDestination(navigateUp = navigateBack)
+                    }
+                    entry<Screen.Passes> {
+                        PassesDestination { catNum, aosTime ->
+                            container.satelliteRepo.selectPass(catNum, aosTime)
+                            navigateToRadar()
                         }
-                        entry<Screen.Passes> {
-                            PassesDestination { catNum, aosTime ->
-                                container.satelliteRepo.selectPass(catNum, aosTime)
-                                backStack.add(Screen.Radar)
-//                            navigateToRadar()
-                            }
-                        }
-                        entry<Screen.Radar> {
-                            RadarDestination(navigateUp = navigateBack)
-                        }
-                        entry<Screen.Map> {
-                            MapDestination()
-                        }
-                        entry<Screen.Settings> {
-                            SettingsDestination()
+                    }
+                    entry<Screen.Status> { SatStatusDestination() }
+                    entry<Screen.Map> { MapDestination() }
+                    entry<Screen.Settings> { SettingsDestination() }
+                }
+            )
+            if (trackingState.isActive) {
+                TrackingBanner(
+                    state = trackingState,
+                    onClick = {
+                        val pass = trackingState.currentPass
+                        if (pass != null) {
+                            container.satelliteRepo.selectPass(pass.catNum, pass.aosTime)
+                            navigateToRadar()
                         }
                     }
                 )
-                // Radio tracking status banner
-                if (trackingState.isActive) {
-                    val infiniteTransition = rememberInfiniteTransition(label = "trackingPulse")
-                    val alpha by infiniteTransition.animateFloat(
-                        initialValue = 1f, targetValue = 0.4f,
-                        animationSpec = infiniteRepeatable(
-                            animation = tween(1000, easing = LinearEasing),
-                            repeatMode = RepeatMode.Reverse
-                        ), label = "pulseAlpha"
-                    )
-                    Row(
-                        verticalAlignment = Alignment.CenterVertically,
-                        modifier = Modifier
-                            .fillMaxWidth()
-                            .background(MaterialTheme.colorScheme.primaryContainer)
-                            .clickable {
-                                val pass = trackingState.currentPass
-                                if (pass != null) {
-                                    container.satelliteRepo.selectPass(pass.catNum, pass.aosTime)
-                                    backStack.add(Screen.Radar)
-                                }
-                            }
-                            .padding(horizontal = 12.dp, vertical = 6.dp)
-                    ) {
-                        Box(
-                            modifier = Modifier
-                                .size(8.dp)
-                                .clip(CircleShape)
-                                .background(Color(0xFF4CAF50).copy(alpha = alpha))
-                        )
-                        Spacer(modifier = Modifier.width(8.dp))
-                        Text(
-                            text = "Tracking: ${trackingState.currentPass?.name ?: ""}",
-                            fontSize = 13.sp,
-                            fontWeight = FontWeight.Medium,
-                            color = MaterialTheme.colorScheme.onPrimaryContainer,
-                            modifier = Modifier.weight(1f)
-                        )
-                        val txOk = if (trackingState.txConnected) "TX" else ""
-                        val rxOk = if (trackingState.rxConnected) "RX" else ""
-                        Text(
-                            text = listOf(txOk, rxOk).filter { it.isNotBlank() }.joinToString("/"),
-                            fontSize = 12.sp,
-                            color = MaterialTheme.colorScheme.onPrimaryContainer
-                        )
-                    }
-                }
             }
         }
     }
 }
+
+@Composable
+private fun TrackingBanner(state: RadioTrackingState, onClick: () -> Unit) {
+    val infiniteTransition = rememberInfiniteTransition(label = "trackingPulse")
+    val alpha by infiniteTransition.animateFloat(
+        initialValue = 1f,
+        targetValue = 0.4f,
+        animationSpec = infiniteRepeatable(
+            animation = tween(1000, easing = LinearEasing), repeatMode = RepeatMode.Reverse
+        ),
+        label = "pulseAlpha"
+    )
+    Row(
+        verticalAlignment = Alignment.CenterVertically,
+        modifier = Modifier
+            .fillMaxWidth()
+            .background(MaterialTheme.colorScheme.primaryContainer)
+            .clickable(onClick = onClick)
+            .padding(horizontal = 12.dp, vertical = 6.dp)
+    ) {
+        Box(
+            modifier = Modifier
+                .size(8.dp)
+                .clip(CircleShape)
+                .background(Color(0xFF4CAF50).copy(alpha = alpha))
+        )
+        Spacer(modifier = Modifier.width(8.dp))
+        Text(
+            text = stringResource(R.string.tracking_format, state.currentPass?.name ?: ""),
+            fontSize = 13.sp,
+            fontWeight = FontWeight.Medium,
+            color = MaterialTheme.colorScheme.onPrimaryContainer,
+            modifier = Modifier.weight(1f)
+        )
+        val connections = listOfNotNull(
+            "TX".takeIf { state.txConnected }, "RX".takeIf { state.rxConnected }
+        )
+        Text(
+            text = connections.joinToString("/"),
+            fontSize = 12.sp,
+            color = MaterialTheme.colorScheme.onPrimaryContainer
+        )
+    }
+}

build-logic/convention/src/main/java/com/rtbishop/look4sat/convention/ApplicationPlugin.kt

@@ -36,6 +36,7 @@ internal class ApplicationPlugin : Plugin<Project> {
             implementation(project(":feature:radar"))
             implementation(project(":feature:satellites"))
             implementation(project(":feature:settings"))
+            implementation(project(":feature:status"))
             implementation(libs.androidx.core.splashscreen)
             implementation(libs.compose.material3.adaptive)
             implementation(libs.compose.navigation3)

build.gradle.kts

@@ -5,6 +5,46 @@ plugins {
     alias(libs.plugins.google.ksp) apply false
     alias(libs.plugins.kotlin.jvm) apply false
     alias(libs.plugins.kotlin.serialization) apply false
+    alias(libs.plugins.other.detekt)
+}
+
+val detektCheck = tasks.register<io.gitlab.arturbosch.detekt.Detekt>("detektCheck") {
+    description = "Checks that source code satisfies detekt rules."
+    autoCorrect = false
+}
+
+val detektApply = tasks.register<io.gitlab.arturbosch.detekt.Detekt>("detektApply") {
+    description = "Applies code formatting rules to source code in-place."
+    autoCorrect = true
+}
+
+configure(listOf(detektCheck, detektApply)) {
+    configure {
+        group = "verification"
+        parallel = true
+        ignoreFailures = false
+        setSource(file(rootDir))
+
+        // Custom detekt config
+        config.setFrom("$projectDir/config/detekt/detekt.yml")
+
+        // Use default configuration on top of custom config
+        // (new detect rules will work out of the box after upgrading detekt version)
+        buildUponDefaultConfig = true
+
+        // Runs detekt for all files in the Gradle project and all subprojects without
+        // a need to configure detekt plugin in every subproject.
+        include("**/*.kt", "**/*.kts")
+        exclude("**/resources/**", "**/build/**", "**/generated/**", "**/testing/**")
+
+        reports {
+            html.required.set(true)
+            xml.required.set(true)
+        }
+    }
+    dependencies {
+        detektPlugins(libs.other.detekt.formatting)
+    }
 }
 
 tasks.register("clean", Delete::class.java) {

config/detekt/detekt.yml

@@ -0,0 +1,808 @@
+build:
+  maxIssues: 0
+  excludeCorrectable: false
+  weights:
+  # complexity: 2
+  # LongParameterList: 1
+  # style: 1
+  # comments: 1
+
+config:
+  validation: true
+  warningsAsErrors: false
+  checkExhaustiveness: false
+  # when writing own rules with new properties, exclude the property path e.g.: 'my_rule_set,.*>.*>[my_property]'
+  excludes: ''
+
+processors:
+  active: true
+  exclude:
+    - 'DetektProgressListener'
+  # - 'KtFileCountProcessor'
+  # - 'PackageCountProcessor'
+  # - 'ClassCountProcessor'
+  # - 'FunctionCountProcessor'
+  # - 'PropertyCountProcessor'
+  # - 'ProjectComplexityProcessor'
+  # - 'ProjectCognitiveComplexityProcessor'
+  # - 'ProjectLLOCProcessor'
+  # - 'ProjectCLOCProcessor'
+  # - 'ProjectLOCProcessor'
+  # - 'ProjectSLOCProcessor'
+  # - 'LicenseHeaderLoaderExtension'
+
+console-reports:
+  active: true
+  exclude:
+    - 'ProjectStatisticsReport'
+    - 'ComplexityReport'
+    - 'NotificationReport'
+    - 'FindingsReport'
+    - 'FileBasedFindingsReport'
+  #  - 'LiteFindingsReport'
+
+output-reports:
+  active: true
+  exclude:
+  # - 'TxtOutputReport'
+  # - 'XmlOutputReport'
+   - 'HtmlOutputReport'
+  # - 'MdOutputReport'
+  # - 'SarifOutputReport'
+
+comments:
+  active: true
+  AbsentOrWrongFileLicense:
+    active: false
+    licenseTemplateFile: 'license.template'
+    licenseTemplateIsRegex: false
+  CommentOverPrivateFunction:
+    active: false
+  CommentOverPrivateProperty:
+    active: false
+  DeprecatedBlockTag:
+    active: false
+  EndOfSentenceFormat:
+    active: false
+    endOfSentenceFormat: '([.?!][ \t\n\r\f<])|([.?!:]$)'
+  KDocReferencesNonPublicProperty:
+    active: false
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+  OutdatedDocumentation:
+    active: false
+    matchTypeParameters: true
+    matchDeclarationsOrder: true
+    allowParamOnConstructorProperties: false
+  UndocumentedPublicClass:
+    active: false
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+    searchInNestedClass: true
+    searchInInnerClass: true
+    searchInInnerObject: true
+    searchInInnerInterface: true
+    searchInProtectedClass: false
+  UndocumentedPublicFunction:
+    active: false
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+    searchProtectedFunction: false
+  UndocumentedPublicProperty:
+    active: false
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+    searchProtectedProperty: false
+
+complexity:
+  active: true
+  CognitiveComplexMethod:
+    active: false
+    threshold: 15
+  ComplexCondition:
+    active: true
+    threshold: 4
+  ComplexInterface:
+    active: false
+    threshold: 10
+    includeStaticDeclarations: false
+    includePrivateDeclarations: false
+    ignoreOverloaded: false
+  CyclomaticComplexMethod:
+    active: true
+    threshold: 15
+    ignoreSingleWhenExpression: false
+    ignoreSimpleWhenEntries: false
+    ignoreNestingFunctions: false
+    nestingFunctions:
+      - 'also'
+      - 'apply'
+      - 'forEach'
+      - 'isNotNull'
+      - 'ifNull'
+      - 'let'
+      - 'run'
+      - 'use'
+      - 'with'
+    # Composables describe UI trees declaratively and naturally accumulate more branches than
+    # regular functions. Exclude them here and rely on code review + decomposition instead.
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**', '**/*Screen.kt', '**/*Slots.kt' ]
+  LabeledExpression:
+    active: false
+    ignoredLabels: [ ]
+  LargeClass:
+    active: true
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**', '**/*Screen.kt', '**/*Slots.kt' ]
+    threshold: 600
+  LongMethod:
+    active: true
+    # Composable UI functions are declarative trees; 60 lines is too strict for them.
+    # Screen/Slots files are excluded — keep them reasonable via code review.
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**', '**/*Screen.kt', '**/*Slots.kt' ]
+    threshold: 60
+  LongParameterList:
+    active: false
+    functionThreshold: 6
+    constructorThreshold: 7
+    ignoreDefaultParameters: false
+    ignoreDataClasses: true
+    ignoreAnnotatedParameter: [ ]
+  MethodOverloading:
+    active: false
+    threshold: 6
+  NamedArguments:
+    active: false
+    threshold: 3
+    ignoreArgumentsMatchingNames: false
+  NestedBlockDepth:
+    active: true
+    threshold: 4
+  NestedScopeFunctions:
+    active: false
+    threshold: 1
+    functions:
+      - 'kotlin.apply'
+      - 'kotlin.run'
+      - 'kotlin.with'
+      - 'kotlin.let'
+      - 'kotlin.also'
+  ReplaceSafeCallChainWithRun:
+    active: false
+  StringLiteralDuplication:
+    active: false
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+    threshold: 3
+    ignoreAnnotation: true
+    excludeStringsWithLessThan5Characters: true
+    ignoreStringsRegex: '$^'
+  TooManyFunctions:
+    active: false
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+    thresholdInFiles: 11
+    thresholdInClasses: 11
+    thresholdInInterfaces: 11
+    thresholdInObjects: 11
+    thresholdInEnums: 11
+    ignoreDeprecated: false
+    ignorePrivate: false
+    ignoreOverridden: false
+
+coroutines:
+  active: true
+  GlobalCoroutineUsage:
+    active: false
+  InjectDispatcher:
+    active: true
+    dispatcherNames:
+      - 'IO'
+      - 'Default'
+      - 'Unconfined'
+  RedundantSuspendModifier:
+    active: true
+  SleepInsteadOfDelay:
+    active: true
+  SuspendFunSwallowedCancellation:
+    active: false
+  SuspendFunWithCoroutineScopeReceiver:
+    active: false
+  SuspendFunWithFlowReturnType:
+    active: true
+
+empty-blocks:
+  active: true
+  EmptyCatchBlock:
+    active: true
+    allowedExceptionNameRegex: '_|(ignore|expected).*'
+  EmptyClassBlock:
+    active: true
+  EmptyDefaultConstructor:
+    active: true
+  EmptyDoWhileBlock:
+    active: true
+  EmptyElseBlock:
+    active: true
+  EmptyFinallyBlock:
+    active: true
+  EmptyForBlock:
+    active: true
+  EmptyFunctionBlock:
+    active: true
+    ignoreOverridden: true
+  EmptyIfBlock:
+    active: true
+  EmptyInitBlock:
+    active: true
+  EmptyKtFile:
+    active: true
+  EmptySecondaryConstructor:
+    active: true
+  EmptyTryBlock:
+    active: true
+  EmptyWhenBlock:
+    active: true
+  EmptyWhileBlock:
+    active: true
+
+exceptions:
+  active: true
+  ExceptionRaisedInUnexpectedLocation:
+    active: true
+    methodNames:
+      - 'equals'
+      - 'finalize'
+      - 'hashCode'
+      - 'toString'
+  InstanceOfCheckForException:
+    active: true
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+  NotImplementedDeclaration:
+    active: false
+  ObjectExtendsThrowable:
+    active: false
+  PrintStackTrace:
+    active: true
+  RethrowCaughtException:
+    active: true
+  ReturnFromFinally:
+    active: true
+    ignoreLabeled: false
+  SwallowedException:
+    active: true
+    ignoredExceptionTypes:
+      - 'InterruptedException'
+      - 'MalformedURLException'
+      - 'NumberFormatException'
+      - 'ParseException'
+    allowedExceptionNameRegex: '_|(ignore|expected).*'
+  ThrowingExceptionFromFinally:
+    active: true
+  ThrowingExceptionInMain:
+    active: false
+  ThrowingExceptionsWithoutMessageOrCause:
+    active: true
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+    exceptions:
+      - 'ArrayIndexOutOfBoundsException'
+      - 'Exception'
+      - 'IllegalArgumentException'
+      - 'IllegalMonitorStateException'
+      - 'IllegalStateException'
+      - 'IndexOutOfBoundsException'
+      - 'NullPointerException'
+      - 'RuntimeException'
+      - 'Throwable'
+  ThrowingNewInstanceOfSameException:
+    active: true
+  TooGenericExceptionCaught:
+    active: true
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+    exceptionNames:
+      - 'ArrayIndexOutOfBoundsException'
+      - 'Error'
+      - 'Exception'
+      - 'IllegalMonitorStateException'
+      - 'IndexOutOfBoundsException'
+      - 'NullPointerException'
+      - 'RuntimeException'
+      - 'Throwable'
+    allowedExceptionNameRegex: '_|(ignore|expected).*'
+  TooGenericExceptionThrown:
+    active: true
+    exceptionNames:
+      - 'Error'
+      - 'Exception'
+      - 'RuntimeException'
+      - 'Throwable'
+
+formatting:
+  active: true
+  ArgumentListWrapping:
+    active: false
+  ParameterListWrapping:
+    active: false
+  NoWildcardImports:
+    active: false
+  MaximumLineLength:
+    active: true
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+
+naming:
+  active: true
+  BooleanPropertyNaming:
+    active: false
+    allowedPattern: '^(is|has|are)'
+  ClassNaming:
+    active: true
+    classPattern: '[A-Z][a-zA-Z0-9_]*'
+  ConstructorParameterNaming:
+    active: true
+    parameterPattern: '[a-z][A-Za-z0-9]*'
+    privateParameterPattern: '[a-z][A-Za-z0-9]*'
+    excludeClassPattern: '$^'
+  EnumNaming:
+    active: true
+    enumEntryPattern: '[A-Z][_a-zA-Z0-9]*'
+  ForbiddenClassName:
+    active: false
+    forbiddenName: [ ]
+  FunctionMaxLength:
+    active: false
+    maximumFunctionNameLength: 30
+  FunctionMinLength:
+    active: false
+    minimumFunctionNameLength: 3
+  FunctionNaming:
+    active: true
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+    functionPattern: '[a-zA-Z][a-zA-Z0-9]*'
+    excludeClassPattern: '$^'
+  FunctionParameterNaming:
+    active: true
+    parameterPattern: '[a-zA-Z][A-Za-z0-9]*'
+    excludeClassPattern: '$^'
+  InvalidPackageDeclaration:
+    active: true
+    rootPackage: ''
+    requireRootInDeclaration: false
+  LambdaParameterNaming:
+    active: false
+    parameterPattern: '[a-z][A-Za-z0-9]*|_'
+  MatchingDeclarationName:
+    active: false
+    mustBeFirst: false
+  MemberNameEqualsClassName:
+    active: true
+    ignoreOverridden: true
+  NoNameShadowing:
+    active: true
+  NonBooleanPropertyPrefixedWithIs:
+    active: false
+  ObjectPropertyNaming:
+    active: true
+    constantPattern: '[A-Za-z][_A-Za-z0-9]*'
+    propertyPattern: '[A-Za-z][_A-Za-z0-9]*'
+    privatePropertyPattern: '(_)?[A-Za-z][_A-Za-z0-9]*'
+  PackageNaming:
+    active: true
+    packagePattern: '[a-z]+(\.[a-z][A-Za-z0-9]*)*'
+  TopLevelPropertyNaming:
+    active: true
+    constantPattern: '[A-Z][_A-Z0-9]*'
+    propertyPattern: '[A-Za-z][_A-Za-z0-9]*'
+    privatePropertyPattern: '_?[A-Za-z][_A-Za-z0-9]*'
+  VariableMaxLength:
+    active: false
+    maximumVariableNameLength: 64
+  VariableMinLength:
+    active: false
+    minimumVariableNameLength: 1
+  VariableNaming:
+    active: true
+    variablePattern: '[a-zA-Z][A-Za-z0-9]*'
+    privateVariablePattern: '(_)?[a-zA-Z][A-Za-z0-9]*'
+    excludeClassPattern: '$^'
+
+performance:
+  active: true
+  ArrayPrimitive:
+    active: true
+  CouldBeSequence:
+    active: false
+    threshold: 3
+  ForEachOnRange:
+    active: true
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+  SpreadOperator:
+    active: true
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+  UnnecessaryPartOfBinaryExpression:
+    active: false
+  UnnecessaryTemporaryInstantiation:
+    active: true
+
+potential-bugs:
+  active: true
+  AvoidReferentialEquality:
+    active: true
+    forbiddenTypePatterns:
+      - 'kotlin.String'
+  CastNullableToNonNullableType:
+    active: false
+  CastToNullableType:
+    active: false
+  Deprecation:
+    active: false
+  DontDowncastCollectionTypes:
+    active: false
+  DoubleMutabilityForCollection:
+    active: true
+    mutableTypes:
+      - 'kotlin.collections.MutableList'
+      - 'kotlin.collections.MutableMap'
+      - 'kotlin.collections.MutableSet'
+      - 'java.util.ArrayList'
+      - 'java.util.LinkedHashSet'
+      - 'java.util.HashSet'
+      - 'java.util.LinkedHashMap'
+      - 'java.util.HashMap'
+  ElseCaseInsteadOfExhaustiveWhen:
+    active: false
+    ignoredSubjectTypes: [ ]
+  EqualsAlwaysReturnsTrueOrFalse:
+    active: true
+  EqualsWithHashCodeExist:
+    active: true
+  ExitOutsideMain:
+    active: false
+  ExplicitGarbageCollectionCall:
+    active: true
+  HasPlatformType:
+    active: true
+  IgnoredReturnValue:
+    active: true
+    restrictToConfig: true
+    returnValueAnnotations:
+      - 'CheckResult'
+      - '*.CheckResult'
+      - 'CheckReturnValue'
+      - '*.CheckReturnValue'
+    ignoreReturnValueAnnotations:
+      - 'CanIgnoreReturnValue'
+      - '*.CanIgnoreReturnValue'
+    returnValueTypes:
+      - 'kotlin.sequences.Sequence'
+      - 'kotlinx.coroutines.flow.*Flow'
+      - 'java.util.stream.*Stream'
+    ignoreFunctionCall: [ ]
+  ImplicitDefaultLocale:
+    active: true
+  ImplicitUnitReturnType:
+    active: false
+    allowExplicitReturnType: true
+  InvalidRange:
+    active: true
+  IteratorHasNextCallsNextMethod:
+    active: true
+  IteratorNotThrowingNoSuchElementException:
+    active: true
+  LateinitUsage:
+    active: false
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+    ignoreOnClassesPattern: ''
+  MapGetWithNotNullAssertionOperator:
+    active: true
+  MissingPackageDeclaration:
+    active: false
+    excludes: [ '**/*.kts' ]
+  NullCheckOnMutableProperty:
+    active: false
+  NullableToStringCall:
+    active: false
+  PropertyUsedBeforeDeclaration:
+    active: false
+  UnconditionalJumpStatementInLoop:
+    active: false
+  UnnecessaryNotNullCheck:
+    active: false
+  UnnecessaryNotNullOperator:
+    active: true
+  UnnecessarySafeCall:
+    active: true
+  UnreachableCatchBlock:
+    active: true
+  UnreachableCode:
+    active: true
+  UnsafeCallOnNullableType:
+    active: true
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**' ]
+  UnsafeCast:
+    active: true
+  UnusedUnaryOperator:
+    active: true
+  UselessPostfixExpression:
+    active: true
+  WrongEqualsTypeParameter:
+    active: true
+
+style:
+  active: true
+  AlsoCouldBeApply:
+    active: false
+  BracesOnIfStatements:
+    active: false
+    singleLine: 'never'
+    multiLine: 'always'
+  BracesOnWhenStatements:
+    active: false
+    singleLine: 'necessary'
+    multiLine: 'consistent'
+  CanBeNonNullable:
+    active: false
+  CascadingCallWrapping:
+    active: false
+    includeElvis: true
+  ClassOrdering:
+    active: false
+  CollapsibleIfStatements:
+    active: false
+  DataClassContainsFunctions:
+    active: false
+    conversionFunctionPrefix:
+      - 'to'
+    allowOperators: false
+  DataClassShouldBeImmutable:
+    active: false
+  DestructuringDeclarationWithTooManyEntries:
+    active: true
+    maxDestructuringEntries: 3
+  DoubleNegativeLambda:
+    active: false
+    negativeFunctions:
+      - reason: 'Use `takeIf` instead.'
+        value: 'takeUnless'
+      - reason: 'Use `all` instead.'
+        value: 'none'
+    negativeFunctionNameParts:
+      - 'not'
+      - 'non'
+  EqualsNullCall:
+    active: true
+  EqualsOnSignatureLine:
+    active: false
+  ExplicitCollectionElementAccessMethod:
+    active: false
+  ExplicitItLambdaParameter:
+    active: true
+  ExpressionBodySyntax:
+    active: false
+    includeLineWrapping: false
+  ForbiddenAnnotation:
+    active: false
+    annotations:
+      - reason: 'it is a java annotation. Use `Suppress` instead.'
+        value: 'java.lang.SuppressWarnings'
+      - reason: 'it is a java annotation. Use `kotlin.Deprecated` instead.'
+        value: 'java.lang.Deprecated'
+      - reason: 'it is a java annotation. Use `kotlin.annotation.MustBeDocumented` instead.'
+        value: 'java.lang.annotation.Documented'
+      - reason: 'it is a java annotation. Use `kotlin.annotation.Target` instead.'
+        value: 'java.lang.annotation.Target'
+      - reason: 'it is a java annotation. Use `kotlin.annotation.Retention` instead.'
+        value: 'java.lang.annotation.Retention'
+      - reason: 'it is a java annotation. Use `kotlin.annotation.Repeatable` instead.'
+        value: 'java.lang.annotation.Repeatable'
+      - reason: 'Kotlin does not support @Inherited annotation, see https://youtrack.jetbrains.com/issue/KT-22265'
+        value: 'java.lang.annotation.Inherited'
+  ForbiddenComment:
+    active: true
+    comments:
+      - reason: 'Forbidden FIXME todo marker in comment, please fix the problem.'
+        value: 'FIXME:'
+      - reason: 'Forbidden STOPSHIP todo marker in comment, please address the problem before shipping the code.'
+        value: 'STOPSHIP:'
+      - reason: 'Forbidden TODO todo marker in comment, please do the changes.'
+        value: 'TODO:'
+    allowedPatterns: ''
+  ForbiddenImport:
+    active: false
+    imports: [ ]
+    forbiddenPatterns: ''
+  ForbiddenMethodCall:
+    active: false
+    methods:
+      - reason: 'print does not allow you to configure the output stream. Use a logger instead.'
+        value: 'kotlin.io.print'
+      - reason: 'println does not allow you to configure the output stream. Use a logger instead.'
+        value: 'kotlin.io.println'
+  ForbiddenSuppress:
+    active: false
+    rules: [ ]
+  ForbiddenVoid:
+    active: true
+    ignoreOverridden: false
+    ignoreUsageInGenerics: false
+  FunctionOnlyReturningConstant:
+    active: true
+    ignoreOverridableFunction: true
+    ignoreActualFunction: true
+    excludedFunctions: [ ]
+  LoopWithTooManyJumpStatements:
+    active: true
+    maxJumpCount: 1
+  MagicNumber:
+    active: false
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**', '**/*.kts' ]
+    ignoreNumbers:
+      - '-1'
+      - '0'
+      - '1'
+      - '2'
+    ignoreHashCodeFunction: true
+    ignorePropertyDeclaration: false
+    ignoreLocalVariableDeclaration: false
+    ignoreConstantDeclaration: true
+    ignoreCompanionObjectPropertyDeclaration: true
+    ignoreAnnotation: false
+    ignoreNamedArgument: true
+    ignoreEnums: false
+    ignoreRanges: false
+    ignoreExtensionFunctions: true
+  MandatoryBracesLoops:
+    active: false
+  MaxChainedCallsOnSameLine:
+    active: false
+    maxChainedCalls: 5
+  MaxLineLength:
+    active: true
+    excludes: [ '**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/androidUnitTest/**', '**/androidInstrumentedTest/**', '**/jsTest/**', '**/iosTest/**', '**/*.kts' ]
+    maxLineLength: 120
+    excludePackageStatements: true
+    excludeImportStatements: true
+    excludeCommentStatements: true
+    excludeRawStrings: true
+  MayBeConst:
+    active: true
+  ModifierOrder:
+    active: true
+  MultilineLambdaItParameter:
+    active: false
+  MultilineRawStringIndentation:
+    active: false
+    indentSize: 4
+    trimmingMethods:
+      - 'trimIndent'
+      - 'trimMargin'
+  NestedClassesVisibility:
+    active: true
+  NewLineAtEndOfFile:
+    active: true
+  NoTabs:
+    active: false
+  NullableBooleanCheck:
+    active: false
+  ObjectLiteralToLambda:
+    active: true
+  OptionalAbstractKeyword:
+    active: true
+  OptionalUnit:
+    active: false
+  OptionalWhenBraces:
+    active: false
+  PreferToOverPairSyntax:
+    active: false
+  ProtectedMemberInFinalClass:
+    active: true
+  RedundantExplicitType:
+    active: false
+  RedundantHigherOrderMapUsage:
+    active: true
+  RedundantVisibilityModifierRule:
+    active: false
+  ReturnCount:
+    active: true
+    max: 3
+    excludedFunctions:
+      - 'equals'
+    excludeLabeled: false
+    excludeReturnFromLambda: true
+    # Guard clauses (early returns for preconditions) are idiomatic Kotlin and should not
+    # count toward the return limit. E.g. `if (x == null) return null` at function top.
+    excludeGuardClauses: true
+  SafeCast:
+    active: true
+  SerialVersionUIDInSerializableClass:
+    active: true
+  SpacingBetweenPackageAndImports:
+    active: false
+  StringShouldBeRawString:
+    active: false
+    maxEscapedCharacterCount: 2
+    ignoredCharacters: [ ]
+  ThrowsCount:
+    active: true
+    max: 2
+    excludeGuardClauses: false
+  TrailingWhitespace:
+    active: false
+  TrimMultilineRawString:
+    active: false
+    trimmingMethods:
+      - 'trimIndent'
+      - 'trimMargin'
+  UnderscoresInNumericLiterals:
+    active: false
+    acceptableLength: 4
+    allowNonStandardGrouping: false
+  UnnecessaryAbstractClass:
+    active: true
+  UnnecessaryAnnotationUseSiteTarget:
+    active: false
+  UnnecessaryApply:
+    active: true
+  UnnecessaryBackticks:
+    active: false
+  UnnecessaryBracesAroundTrailingLambda:
+    active: false
+  UnnecessaryFilter:
+    active: true
+  UnnecessaryInheritance:
+    active: true
+  UnnecessaryInnerClass:
+    active: false
+  UnnecessaryLet:
+    active: false
+  UnnecessaryParentheses:
+    active: false
+    allowForUnclearPrecedence: false
+  UntilInsteadOfRangeTo:
+    active: false
+  UnusedImports:
+    active: false
+  UnusedParameter:
+    active: true
+    allowedNames: 'ignored|expected'
+  UnusedPrivateClass:
+    active: true
+  UnusedPrivateMember:
+    active: true
+    allowedNames: '[A-Z][a-zA-Z0-9]*Preview'
+  UnusedPrivateProperty:
+    active: true
+    allowedNames: '_|ignored|expected|serialVersionUID'
+  UseAnyOrNoneInsteadOfFind:
+    active: true
+  UseArrayLiteralsInAnnotations:
+    active: true
+  UseCheckNotNull:
+    active: true
+  UseCheckOrError:
+    active: true
+  UseDataClass:
+    active: false
+    allowVars: false
+  UseEmptyCounterpart:
+    active: false
+  UseIfEmptyOrIfBlank:
+    active: false
+  UseIfInsteadOfWhen:
+    active: false
+    ignoreWhenContainingVariableDeclaration: false
+  UseIsNullOrEmpty:
+    active: true
+  UseLet:
+    active: false
+  UseOrEmpty:
+    active: true
+  UseRequire:
+    active: true
+  UseRequireNotNull:
+    active: true
+  UseSumOfInsteadOfFlatMapSize:
+    active: false
+  UselessCallOnNotNull:
+    active: true
+  UtilityClassWithPublicConstructor:
+    active: true
+  VarCouldBeVal:
+    active: true
+    ignoreLateinitVar: false
+  WildcardImport:
+    active: false
+    excludeImports:
+      - 'java.util.*'

core/data/src/main/java/com/rtbishop/look4sat/core/data/database/Look4SatDao.kt

@@ -19,6 +19,7 @@ package com.rtbishop.look4sat.core.data.database
 
 import androidx.room.Dao
 import androidx.room.Insert
+import androidx.room.MapColumn
 import androidx.room.OnConflictStrategy
 import androidx.room.Query
 import androidx.room.Transaction
@@ -39,6 +40,18 @@ interface Look4SatDao {
     @Query("SELECT * FROM entries WHERE catnum IN (:selectedIds)")
     suspend fun getEntriesWithIds(selectedIds: List<Int>): List<SatEntry>
 
+    @Query("SELECT catnum, epoch FROM entries")
+    suspend fun getEntriesEpochs(): Map<@MapColumn("catnum") Int, @MapColumn("epoch") Double>
+
+    @Query("SELECT catnum, name FROM entries")
+    suspend fun getEntriesNames(): Map<@MapColumn("catnum") Int, @MapColumn("name") String>
+
+    @Query("UPDATE entries SET name = :name WHERE catnum = :catnum")
+    suspend fun renameEntry(catnum: Int, name: String)
+
+    @Query("DELETE FROM entries WHERE catnum IN (:ids)")
+    suspend fun deleteEntriesWithIds(ids: List<Int>)
+
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     suspend fun insertEntries(entries: List<SatEntry>)
 
@@ -65,4 +78,7 @@ interface Look4SatDao {
 
     @Query("DELETE FROM radios")
     suspend fun deleteRadios()
+
+    @Query("DELETE FROM radios WHERE isCustom = 0")
+    suspend fun deleteManagedRadios()
 }

core/data/src/main/java/com/rtbishop/look4sat/core/data/database/Look4SatDb.kt

@@ -19,19 +19,23 @@ package com.rtbishop.look4sat.core.data.database
 
 import androidx.room.Database
 import androidx.room.RoomDatabase
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
 import com.rtbishop.look4sat.core.data.database.entity.SatEntry
 import com.rtbishop.look4sat.core.data.database.entity.SatRadio
 
-@Database(entities = [SatEntry::class, SatRadio::class], version = 1, exportSchema = false)
+const val DATABASE_NAME = "Look4SatDBv400"
+
+@Database(entities = [SatEntry::class, SatRadio::class], version = 2, exportSchema = false)
 abstract class Look4SatDb : RoomDatabase() {
     abstract fun look4SatDao(): Look4SatDao
 }
 
-//val MIGRATION_1_2 = object : Migration(1, 2) {
-//    override fun migrate(database: SupportSQLiteDatabase) {
-//        database.execSQL("CREATE TABLE entries_backup (name TEXT NOT NULL, epoch REAL NOT NULL, meanmo REAL NOT NULL, eccn REAL NOT NULL, incl REAL NOT NULL, raan REAL NOT NULL, argper REAL NOT NULL, meanan REAL NOT NULL, catnum INTEGER NOT NULL, bstar REAL NOT NULL, xincl REAL NOT NULL, xnodeo REAL NOT NULL, omegao REAL NOT NULL, xmo REAL NOT NULL, xno REAL NOT NULL, orbitalPeriod REAL NOT NULL, isDeepSpace INTEGER NOT NULL, comment TEXT, PRIMARY KEY(catnum))")
-//        database.execSQL("INSERT INTO entries_backup (name, epoch, meanmo, eccn, incl, raan, argper, meanan, catnum, bstar, xincl, xnodeo, omegao, xmo, xno, orbitalPeriod, isDeepSpace, comment) SELECT name, epoch, meanmo, eccn, incl, raan, argper, meanan, catnum, bstar, xincl, xnodeo, omegao, xmo, xno, 1440 / meanmo, 1440 / meanmo >= 225.0, comment FROM entries")
-//        database.execSQL("DROP TABLE entries")
-//        database.execSQL("ALTER TABLE entries_backup RENAME TO entries")
-//    }
-//}
+/** Adds the mean motion derivative, needed to tell decayed satellites apart, and marks the
+ * transceivers that were imported from a file, so that remote updates leave them alone. */
+val MIGRATION_1_2 = object : Migration(1, 2) {
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE entries ADD COLUMN ndot REAL NOT NULL DEFAULT 0.0")
+        db.execSQL("ALTER TABLE radios ADD COLUMN isCustom INTEGER NOT NULL DEFAULT 0")
+    }
+}

core/data/src/main/java/com/rtbishop/look4sat/core/data/database/entity/SatEntry.kt

@@ -30,5 +30,6 @@ data class SatEntry(
     val argper: Double,
     val meanan: Double,
     val catnum: Int,
-    val bstar: Double
+    val bstar: Double,
+    val ndot: Double = 0.0
 )

core/data/src/main/java/com/rtbishop/look4sat/core/data/database/entity/SatRadio.kt

@@ -32,5 +32,7 @@ data class SatRadio(
     val uplinkHigh: Long?,
     val uplinkMode: String?,
     val isInverted: Boolean,
-    val catnum: Int?
+    val catnum: Int?,
+    /** Set for manually imported transceivers, which remote updates must not replace. */
+    val isCustom: Boolean = false
 )

core/data/src/main/java/com/rtbishop/look4sat/core/data/framework/NetworkReporter.kt

@@ -17,8 +17,10 @@
  */
 package com.rtbishop.look4sat.core.data.framework
 
+import com.rtbishop.look4sat.core.domain.model.Constants
 import com.rtbishop.look4sat.core.domain.repository.IReporter
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
@@ -31,18 +33,30 @@ class NetworkReporter(
     private val rotatorServer: String,
     private val rotatorPort: Int,
     private val frequencyServer: String,
-    private val frequencyPort: Int
+    private val frequencyPort: Int,
+    private val frequencyOffsetHz: Long = 0L
 ) : IReporter {
 
     private val writeMutex = Mutex()
+    private val connectionMutex = Mutex()
+    private val frequencyCommands = Channel<String>(Channel.CONFLATED)
 
     private var rotatorSocket: SocketChannel? = null
     private var rotatorConnected = false
-    private var rotatorConnecting = false
 
     private var frequencySocket: SocketChannel? = null
     private var frequencyConnected = false
-    private var frequencyConnecting = false
+
+    init {
+        // Keep only the latest frequency command to avoid stale backlog and effective lag.
+        reporterScope.launch {
+            for (command in frequencyCommands) {
+                ensureFrequencyConnected()
+                if (!frequencyConnected) continue
+                write(frequencySocket, command) { resetFrequencyConnection() }
+            }
+        }
+    }
 
     override fun reportRotation(format: String, azimuth: Double, elevation: Double) {
         reporterScope.launch {
@@ -58,46 +72,43 @@ class NetworkReporter(
     }
 
     override fun reportFrequency(format: String, frequency: Long) {
-        reporterScope.launch {
-            ensureFrequencyConnected()
-            if (!frequencyConnected) return@launch
-            val command = format
-                .replace($$"$FREQ", frequency.toString())
-                .unescapeControlChars()
-            write(frequencySocket, command) { frequencyConnected = false }
-        }
+        val clampedOffset = frequencyOffsetHz.coerceIn(
+            Constants.FREQ_OFFSET_MIN_HZ,
+            Constants.FREQ_OFFSET_MAX_HZ
+        )
+        val correctedFreq = frequency.coerceAtLeast(0L).safeAdd(clampedOffset).coerceAtLeast(0L)
+        val command = format
+            .replace($$"$FREQ", correctedFreq.toString())
+            .unescapeControlChars()
+        frequencyCommands.trySend(command)
     }
 
-    private fun ensureRotatorConnected() {
-        if (rotatorConnected || rotatorConnecting || rotatorServer.isBlank()) return
-        reporterScope.launch {
+    private suspend fun ensureRotatorConnected() {
+        connectionMutex.withLock {
+            if (rotatorConnected || rotatorServer.isBlank()) return
             try {
-                rotatorConnecting = true
+                resetRotatorConnection()
                 rotatorSocket = SocketChannel.open(InetSocketAddress(rotatorServer, rotatorPort))
                 rotatorConnected = true
                 println("NetworkReporter: Rotator connected to $rotatorServer:$rotatorPort")
             } catch (e: Exception) {
                 println("NetworkReporter rotator connect error: ${e.message}")
-                rotatorConnected = false
-            } finally {
-                rotatorConnecting = false
+                resetRotatorConnection()
             }
         }
     }
 
-    private fun ensureFrequencyConnected() {
-        if (frequencyConnected || frequencyConnecting || frequencyServer.isBlank()) return
-        reporterScope.launch {
+    private suspend fun ensureFrequencyConnected() {
+        connectionMutex.withLock {
+            if (frequencyConnected || frequencyServer.isBlank()) return
             try {
-                frequencyConnecting = true
+                resetFrequencyConnection()
                 frequencySocket = SocketChannel.open(InetSocketAddress(frequencyServer, frequencyPort))
                 frequencyConnected = true
                 println("NetworkReporter: Frequency connected to $frequencyServer:$frequencyPort")
             } catch (e: Exception) {
                 println("NetworkReporter frequency connect error: ${e.message}")
-                frequencyConnected = false
-            } finally {
-                frequencyConnecting = false
+                resetFrequencyConnection()
             }
         }
     }
@@ -106,7 +117,9 @@ class NetworkReporter(
         try {
             writeMutex.withLock {
                 val buffer = ByteBuffer.wrap("$command\n".toByteArray())
-                socket?.write(buffer)
+                while (buffer.hasRemaining()) {
+                    socket?.write(buffer)
+                }
             }
         } catch (e: Exception) {
             println("NetworkReporter write error: ${e.message}")
@@ -114,6 +127,32 @@ class NetworkReporter(
         }
     }
 
+    private fun resetRotatorConnection() {
+        rotatorConnected = false
+        closeQuietly(rotatorSocket)
+        rotatorSocket = null
+    }
+
+    private fun resetFrequencyConnection() {
+        frequencyConnected = false
+        closeQuietly(frequencySocket)
+        frequencySocket = null
+    }
+
+    private fun closeQuietly(socket: SocketChannel?) {
+        try {
+            socket?.close()
+        } catch (_: Exception) {}
+    }
+
+    private fun Long.safeAdd(delta: Long): Long {
+        return when {
+            delta > 0 && this > Long.MAX_VALUE - delta -> Long.MAX_VALUE
+            delta < 0 && this < Long.MIN_VALUE - delta -> Long.MIN_VALUE
+            else -> this + delta
+        }
+    }
+
     private fun String.unescapeControlChars(): String =
         replace("\\r", "\r").replace("\\n", "\n").replace("\\t", "\t")
 }

core/data/src/main/java/com/rtbishop/look4sat/core/data/injection/MainContainer.kt

@@ -22,13 +22,17 @@ import android.content.Context
 import android.hardware.SensorManager
 import android.hardware.display.DisplayManager
 import android.location.LocationManager
+import androidx.core.content.pm.PackageInfoCompat
 import androidx.room.Room
+import com.rtbishop.look4sat.core.data.database.DATABASE_NAME
+import com.rtbishop.look4sat.core.data.database.MIGRATION_1_2
 import com.rtbishop.look4sat.core.data.database.Look4SatDb
 import com.rtbishop.look4sat.core.data.framework.BluetoothReporter
 import com.rtbishop.look4sat.core.data.framework.Ft817Controller
 import com.rtbishop.look4sat.core.data.framework.Ic705Controller
 import com.rtbishop.look4sat.core.data.framework.NetworkReporter
 import com.rtbishop.look4sat.core.data.framework.RadioTrackingService
+import com.rtbishop.look4sat.core.data.repository.AmSatRepository
 import com.rtbishop.look4sat.core.data.repository.DatabaseRepo
 import com.rtbishop.look4sat.core.data.repository.SatelliteRepo
 import com.rtbishop.look4sat.core.data.repository.SelectionRepo
@@ -66,12 +70,14 @@ import okhttp3.OkHttpClient
 class MainContainer(private val context: Context) : IMainContainer {
 
     private val localSource = provideLocalSource()
+    private val remoteSource = provideRemoteSource()
     private val mainHandler = CoroutineExceptionHandler { _, error -> println("MainHandler: $error") }
     override val appScope = CoroutineScope(SupervisorJob() + Dispatchers.Default + mainHandler)
     override val settingsRepo = provideSettingsRepo()
     override val selectionRepo = provideSelectionRepo()
     override val satelliteRepo = provideSatelliteRepo()
     override val databaseRepo = provideDatabaseRepo()
+    override val amSatRepo by lazy { AmSatRepository(remoteSource) }
     override val radioTrackingService: IRadioTrackingService by lazy {
         val manager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
         RadioTrackingService(appScope, manager, satelliteRepo, settingsRepo)
@@ -103,7 +109,8 @@ class MainContainer(private val context: Context) : IMainContainer {
             rc.rotatorAddress,
             rc.rotatorPort.toIntOrNull() ?: 0,
             rc.frequencyAddress,
-            rc.frequencyPort.toIntOrNull() ?: 0
+            rc.frequencyPort.toIntOrNull() ?: 0,
+            rc.frequencyOffsetHz
         )
     }
 
@@ -145,18 +152,24 @@ class MainContainer(private val context: Context) : IMainContainer {
     private fun provideDatabaseRepo(): IDatabaseRepo {
         val dbDispatcher = Dispatchers.Default
         val dataParser = DataParser(dbDispatcher)
-        val remoteSource = provideRemoteSource()
         return DatabaseRepo(dbDispatcher, dataParser, localSource, remoteSource, settingsRepo)
     }
 
     private fun provideLocalSource(): ILocalSource {
-        val builder = Room.databaseBuilder(context, Look4SatDb::class.java, "Look4SatDBv400")
-        val database = builder.fallbackToDestructiveMigration(false).build()
+        val builder = Room.databaseBuilder(context, Look4SatDb::class.java, DATABASE_NAME)
+        val database = builder.addMigrations(MIGRATION_1_2).fallbackToDestructiveMigration(false).build()
         return LocalSource(database.look4SatDao())
     }
 
     private fun provideRemoteSource(): IRemoteSource {
-        return RemoteSource(Dispatchers.IO, context.contentResolver, OkHttpClient.Builder().build())
+        val version = context.packageManager.getPackageInfo(context.packageName, 0).versionName ?: "4.0.4"
+        val userAgent = "Look4Sat/$version (+https://github.com/rt-bishop/Look4Sat)"
+        // Data providers ask clients to identify themselves, so that they can reach out to the
+        // developer instead of silently blocking every user of the app behind a misbehaving request
+        val client = OkHttpClient.Builder().addInterceptor { chain ->
+            chain.proceed(chain.request().newBuilder().header("User-Agent", userAgent).build())
+        }.build()
+        return RemoteSource(Dispatchers.IO, context.contentResolver, client)
     }
 
     private fun provideSatelliteRepo(): ISatelliteRepo {
@@ -171,7 +184,9 @@ class MainContainer(private val context: Context) : IMainContainer {
         val manager = context.getSystemService(Context.LOCATION_SERVICE) as LocationManager
         val appPrefsFileName = "${context.packageName}_preferences"
         val appPreferences = context.getSharedPreferences(appPrefsFileName, Context.MODE_PRIVATE)
-        val appVersionName = context.packageManager.getPackageInfo(context.packageName, 0).versionName ?: "4.0.4"
-        return SettingsRepo(manager, appPreferences, appVersionName)
+        val packageInfo = context.packageManager.getPackageInfo(context.packageName, 0)
+        val appVersionName = packageInfo.versionName ?: "4.0.4"
+        val appVersionCode = PackageInfoCompat.getLongVersionCode(packageInfo)
+        return SettingsRepo(manager, appPreferences, appVersionName, appVersionCode)
     }
 }

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/AmSatRepository.kt

@@ -0,0 +1,209 @@
+package com.rtbishop.look4sat.core.data.repository
+
+import com.rtbishop.look4sat.core.domain.model.AmSatReportSubmission
+import com.rtbishop.look4sat.core.domain.model.AmSatReportSubmitResult
+import com.rtbishop.look4sat.core.domain.model.SatDay
+import com.rtbishop.look4sat.core.domain.model.SatReport
+import com.rtbishop.look4sat.core.domain.model.SatSlot
+import com.rtbishop.look4sat.core.domain.model.SatStatus
+import com.rtbishop.look4sat.core.domain.model.SatStatusPage
+import com.rtbishop.look4sat.core.domain.repository.IAmSatRepository
+import com.rtbishop.look4sat.core.domain.source.IRemoteSource
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import org.json.JSONObject
+import java.text.SimpleDateFormat
+import java.util.Calendar
+import java.util.Date
+import java.util.Locale
+import java.util.TimeZone
+
+/** One report from the AMSAT API (data layer model). */
+private data class ApiReport(
+    val id: String,
+    val name: String,
+    val callsign: String,
+    val report: String,
+    val gridSquare: String,
+    val reportedTimeUtcSec: Long
+)
+
+/** AMSAT status repository using RemoteSource (Clean Architecture: data layer handles HTTP). */
+class AmSatRepository(private val remoteSource: IRemoteSource) : IAmSatRepository {
+
+    private val isoUtcFormat = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US).apply {
+        timeZone = TimeZone.getTimeZone("UTC")
+    }
+
+    override suspend fun fetchStatus(): SatStatusPage? = withContext(Dispatchers.IO) {
+        val nowSec = System.currentTimeMillis() / 1000
+        val catalogJson = remoteSource.getAmSatCatalog() ?: return@withContext null
+        // 72h = 3 days; API hard cap is limit=500 regardless of what we send.
+        // 500 records across ~100 catalog satellites ≈ ~1-5 reports/satellite/day — enough for 3 days.
+        // Upgrade path: paginate or request AMSAT to raise the cap if catalog grows beyond ~200 sats.
+        val reportsJson = remoteSource.getAmSatReports(hours = 72, limit = 500) ?: return@withContext null
+        val names = parseCatalog(catalogJson)
+        val reports = parseReports(reportsJson)
+
+        if (names.isEmpty() && reports.isEmpty()) return@withContext null
+
+        val statuses = buildStatuses(names, reports, nowSec)
+        val reportMap = reports.associate { it.id to toSatReport(it) }
+        SatStatusPage(System.currentTimeMillis(), statuses, reportMap)
+    }
+
+    override suspend fun submitReport(submission: AmSatReportSubmission): AmSatReportSubmitResult = withContext(Dispatchers.IO) {
+        val payload = JSONObject().apply {
+            put("name", submission.name)
+            put("report", submission.report)
+            put("callsign", submission.callsign)
+            put("reported_at", isoUtcFormat.format(Date(submission.reportedAtUtcMillis)))
+            if (submission.gridSquare.isNotBlank()) put("grid_square", submission.gridSquare)
+        }
+        val response = remoteSource.submitAmSatReport(payload.toString())
+            ?: return@withContext AmSatReportSubmitResult(success = false, message = "Network request failed")
+        val (code, body) = response
+        val errorMessage = parseSubmitError(body)
+        return@withContext if (code in 200..299 && errorMessage.isBlank()) {
+            AmSatReportSubmitResult(success = true, reportId = parseSubmitReportId(body))
+        } else {
+            AmSatReportSubmitResult(
+                success = false,
+                message = errorMessage.ifBlank { "HTTP $code" }
+            )
+        }
+    }
+
+    private fun parseSubmitError(json: String): String {
+        return try {
+            JSONObject(json).optJSONObject("error")?.optString("message").orEmpty()
+        } catch (_: Exception) {
+            ""
+        }
+    }
+
+    private fun parseSubmitReportId(json: String): String? {
+        return try {
+            val obj = JSONObject(json)
+            obj.optJSONObject("data")?.optString("id")?.takeIf { it.isNotBlank() }
+                ?: obj.optString("id").takeIf { it.isNotBlank() }
+        } catch (_: Exception) {
+            null
+        }
+    }
+
+    /** Parse catalog JSON to list of satellite names */
+    private fun parseCatalog(json: String): List<String> {
+        return try {
+            val arr = JSONObject(json).getJSONArray("data")
+            (0 until arr.length()).map { arr.getJSONObject(it).getString("name") }
+        } catch (_: Exception) {
+            emptyList()
+        }
+    }
+
+    /** Parse reports JSON to list of ApiReport domain objects */
+    private fun parseReports(json: String): List<ApiReport> {
+        return try {
+            val arr = JSONObject(json).getJSONArray("data")
+            (0 until arr.length()).mapNotNull { i ->
+                val o = arr.getJSONObject(i)
+                val iso = o.optString("reported_time", "")
+                if (iso.isEmpty()) null else ApiReport(
+                    id = o.optString("id", ""),
+                    name = o.optString("name", ""),
+                    callsign = o.optString("callsign", ""),
+                    report = o.optString("report", ""),
+                    gridSquare = o.optString("grid_square", ""),
+                    reportedTimeUtcSec = parseIsoUtcSec(iso)
+                )
+            }
+        } catch (_: Exception) {
+            emptyList()
+        }
+    }
+
+    /** Parse ISO 8601 UTC timestamp to epoch seconds (e.g., "2026-08-05T07:30:00Z") */
+    private fun parseIsoUtcSec(iso: String): Long {
+        return try {
+            (isoUtcFormat.parse(iso)?.time ?: 0L) / 1000
+        } catch (_: Exception) {
+            0L
+        }
+    }
+
+    /** Build one SatStatus (5 days x 12 slots) per catalog satellite, slotting reports by age. */
+    private fun buildStatuses(names: List<String>, reports: List<ApiReport>, nowSec: Long): List<SatStatus> {
+        val byName = reports.groupBy { it.name }
+        val utc = Calendar.getInstance(TimeZone.getTimeZone("UTC"))
+        val labels = (0 until 3).map { d ->
+            utc.timeInMillis = (nowSec - d * 86400L) * 1000
+            formatDayLabel(utc)
+        }
+        return names.map { name ->
+            val slots = (0 until 36).map { slotIdx ->
+                val slotStart = nowSec - (slotIdx + 1) * 7200L
+                val slotEnd = nowSec - slotIdx * 7200L
+                val inSlot = byName[name].orEmpty().filter { it.reportedTimeUtcSec in slotStart until slotEnd }
+                if (inSlot.isEmpty()) {
+                    SatSlot(statusColor = NO_REPORT_GRAY, count = 0)
+                } else {
+                    val newest = inSlot.maxByOrNull { it.reportedTimeUtcSec }!!
+                    SatSlot(
+                        statusColor = statusColorOf(newest.report),
+                        count = inSlot.size,
+                        reportIds = inSlot.map { it.id }
+                    )
+                }
+            }
+            val days = (0 until 3).map { d ->
+                SatDay(dateLabel = labels[d], slots = slots.subList(d * 12, (d + 1) * 12))
+            }
+            SatStatus(name = name, days = days)
+        }
+    }
+
+    private fun formatDayLabel(calendar: Calendar): String {
+        return if (Locale.getDefault().language == Locale.CHINESE.language) {
+            "${calendar.get(Calendar.MONTH) + 1}月${calendar.get(Calendar.DAY_OF_MONTH)}日"
+        } else {
+            val monthAbbr = arrayOf("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec")
+            "${monthAbbr[calendar.get(Calendar.MONTH)]} ${calendar.get(Calendar.DAY_OF_MONTH)}"
+        }
+    }
+
+    private fun toSatReport(r: ApiReport): SatReport {
+        val cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"))
+        cal.timeInMillis = r.reportedTimeUtcSec * 1000
+        val hh = cal.get(Calendar.HOUR_OF_DAY).toString().padStart(2, '0')
+        val mm = cal.get(Calendar.MINUTE).toString().padStart(2, '0')
+        val y = cal.get(Calendar.YEAR)
+        val mo = (cal.get(Calendar.MONTH) + 1).toString().padStart(2, '0')
+        val d = cal.get(Calendar.DAY_OF_MONTH).toString().padStart(2, '0')
+        return SatReport(
+            id = r.id,
+            statusText = r.report,
+            call = r.callsign,
+            grid = r.gridSquare,
+            dateUtc = "$y-$mo-$d",
+            timeUtc = "$hh:$mm UTC"
+        )
+    }
+
+    /** Map status text to color value (for UI rendering). */
+    private fun statusColorOf(report: String): Long = when (report.lowercase()) {
+        "heard", "crew active" -> ACTIVE_BLUE
+        "telemetry only" -> TLM_ORANGE
+        "not heard" -> NOT_HEARD_PINK
+        else -> CONFLICT_DEEP_ORANGE
+    }
+
+    companion object {
+        // AMSAT official status colors (from amsat.org/status)
+        private const val ACTIVE_BLUE = 0xFF648FFF
+        private const val TLM_ORANGE = 0xFFFFB000
+        private const val NOT_HEARD_PINK = 0xFFDC267F
+        private const val CONFLICT_DEEP_ORANGE = 0xFFFE6100
+        private const val NO_REPORT_GRAY = 0xFFC0C0C0
+    }
+}

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/DatabaseRepo.kt

@@ -23,7 +23,6 @@ import com.rtbishop.look4sat.core.domain.repository.IDatabaseRepo
 import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
 import com.rtbishop.look4sat.core.domain.source.ILocalSource
 import com.rtbishop.look4sat.core.domain.source.IRemoteSource
-import com.rtbishop.look4sat.core.domain.source.Sources
 import com.rtbishop.look4sat.core.domain.utility.DataParser
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.async
@@ -40,13 +39,13 @@ class DatabaseRepo(
     private val settingsRepo: ISettingsRepo
 ) : IDatabaseRepo {
 
-    private val customSourceType = "Other"
 
     override suspend fun updateTLEFromFile(uri: String): Int = withContext(dispatcher) {
         var importedCount = 0
         remoteSource.getFileStream(uri)?.let { stream ->
-            val entries = parseSatelliteStream(uri, unwrapIfZipped(uri, stream))
-            localSource.insertEntries(entries)
+            val entries = mergeEntries(listOf(parseSatelliteStream(uri, unwrapIfZipped(uri, stream))))
+            insertFresherEntries(entries)
+            // report what the file contained: a valid file holding only stale data is not an error
             importedCount = entries.size
         }
         setUpdateSuccessful(System.currentTimeMillis())
@@ -57,7 +56,7 @@ class DatabaseRepo(
         var importedCount = 0
         remoteSource.getFileStream(uri)?.let { stream ->
             val transceivers = dataParser.parseJSONStream(unwrapIfZipped(uri, stream))
-            localSource.insertRadios(transceivers)
+            localSource.insertRadios(transceivers, isCustom = true)
             importedCount = transceivers.size
         }
         setUpdateSuccessful(System.currentTimeMillis())
@@ -65,29 +64,40 @@ class DatabaseRepo(
     }
 
     override suspend fun updateFromRemote() = withContext(dispatcher) {
-        val dataSourcesSettings = settingsRepo.dataSourcesSettings.value
-        val tleUrls = buildMap {
-            putAll(Sources.satelliteDataUrls)
-            if (dataSourcesSettings.useCustomTLE) put(customSourceType, dataSourcesSettings.tleUrl)
-        }.filterValues { it.isNotBlank() }
-        val radioUrls = buildMap {
-            putAll(Sources.transceiversDataUrls)
-            if (dataSourcesSettings.useCustomTransceivers) put(customSourceType, dataSourcesSettings.transceiversUrl)
-        }.filterValues { it.isNotBlank() }
-        // launch all network requests concurrently
-        val tleJobs = tleUrls.values.map { url -> async { url to remoteSource.getNetworkStream(url) } }
-        val radioJobs = radioUrls.values.map { url -> async { url to remoteSource.getNetworkStream(url) } }
-        // parse fetched data concurrently
-        val importedEntries = tleJobs.awaitAll().flatMap { (url, stream) ->
-            stream?.let { parseSatelliteStream(url, unwrapIfZipped(url, it)) }.orEmpty()
-        }
-        val importedRadios = radioJobs.awaitAll().flatMap { (url, stream) ->
-            stream?.let { dataParser.parseJSONStream(unwrapIfZipped(url, it)) }.orEmpty()
+        val settings = settingsRepo.dataSourcesSettings.value
+        fun normalizeUrl(url: String) = if (url.startsWith("http")) url else "https://$url"
+        val tleUrls = settings.satelliteUrls.filterIndexed { i, url -> url.isNotBlank() && settings.isSatelliteEnabled(i) }
+        val radioUrls = settings.transceiversUrls.filterIndexed { i, url -> url.isNotBlank() && settings.isTransceiverEnabled(i) }
+        // launch all network requests concurrently, keeping the raw url as key for status reporting
+        val tleJobs = tleUrls.map { url -> async { url to remoteSource.getNetworkStream(normalizeUrl(url)) } }
+        val radioJobs = radioUrls.map { url -> async { url to remoteSource.getNetworkStream(normalizeUrl(url)) } }
+        val tleResults = tleJobs.awaitAll()
+        val radioResults = radioJobs.awaitAll()
+        // report the HTTP status code of every source (200, 404, ...)
+        settingsRepo.updateDataSourcesStatus(
+            (tleResults + radioResults).associate { (url, result) -> url to result.code }
+        )
+        // parse fetched data concurrently, merging satellites by freshness instead of source order
+        val parsedPerSource = tleResults.map { (url, result) ->
+            result.stream?.let { val nUrl = normalizeUrl(url); parseSatelliteStream(nUrl, unwrapIfZipped(nUrl, it)) }.orEmpty()
         }
+        val importedRadios = radioResults.flatMap { (url, result) ->
+            result.stream?.let { val nUrl = normalizeUrl(url); dataParser.parseJSONStream(unwrapIfZipped(nUrl, it)) }.orEmpty()
+        }.filter { it.uuid.isNotBlank() }.distinctBy { it.uuid }
         // insert parsed data into the database
-        localSource.insertEntries(importedEntries)
-        localSource.insertRadios(importedRadios)
-        setUpdateSuccessful(System.currentTimeMillis())
+        insertFresherEntries(mergeEntries(parsedPerSource))
+        // transceivers are a full snapshot: sources publish active entries only, so a retired
+        // transceiver simply disappears from the feed and has to be dropped locally as well.
+        // Imported ones are kept: no source can refresh them, so nothing would bring them back
+        if (importedRadios.isNotEmpty()) {
+            localSource.deleteManagedRadios()
+            localSource.insertRadios(importedRadios, isCustom = false)
+        }
+        // keep the previous timestamp when every source failed, so the next launch retries
+        val hasFetchedData = parsedPerSource.any { entries -> entries.isNotEmpty() } || importedRadios.isNotEmpty()
+        val previousTimestamp = settingsRepo.databaseState.value.updateTimestamp
+        if (hasFetchedData) pruneStaleEntries()
+        setUpdateSuccessful(if (hasFetchedData) System.currentTimeMillis() else previousTimestamp)
     }
 
     override suspend fun clearAllData() = withContext(dispatcher) {
@@ -123,6 +133,62 @@ class DatabaseRepo(
             line.count { it == ',' } >= 4
     }
 
+    /**
+     * Merges the data of every source: orbital elements always come from the set with the newest
+     * epoch, while the name comes from the first source that provides it. Source order is thus a
+     * naming preference only, which also keeps names stable when sources leapfrog each other.
+     */
+    private fun mergeEntries(sourceEntries: List<List<OrbitalData>>): List<OrbitalData> {
+        val preferredNames = mutableMapOf<Int, String>()
+        val freshestEntries = mutableMapOf<Int, OrbitalData>()
+        sourceEntries.forEach { entries ->
+            entries.forEach { entry ->
+                val name = entry.name.trim()
+                if (name.isNotBlank()) preferredNames.getOrPut(entry.catnum) { name }
+                val current = freshestEntries[entry.catnum]
+                if (current == null || entry.epochDaynum > current.epochDaynum) {
+                    freshestEntries[entry.catnum] = entry
+                }
+            }
+        }
+        return freshestEntries.values.map { entry ->
+            val name = preferredNames[entry.catnum]
+            if (name == null || name == entry.name) entry else entry.copy(name = name)
+        }
+    }
+
+    /** Stores the entries that are newer than the ones already saved, renaming the rest in place. */
+    private suspend fun insertFresherEntries(entries: List<OrbitalData>) {
+        val storedEpochs = localSource.getEntriesEpochs()
+        val (fresherEntries, staleEntries) = entries.partition { entry ->
+            val storedEpoch = storedEpochs[entry.catnum]
+            storedEpoch == null || entry.epochDaynum > OrbitalData.epochToDaynum(storedEpoch)
+        }
+        localSource.insertEntries(fresherEntries)
+        // a reordered source list has to rename satellites right away, even the ones holding
+        // elements that are newer than the ones just parsed
+        if (staleEntries.isNotEmpty()) {
+            val storedNames = localSource.getEntriesNames()
+            val renamedEntries = staleEntries.filter { entry -> entry.name != storedNames[entry.catnum] }
+            if (renamedEntries.isNotEmpty()) {
+                localSource.renameEntries(renamedEntries.associate { it.catnum to it.name })
+            }
+        }
+    }
+
+    /**
+     * Drops satellites that no enabled source has refreshed for a month: they either decayed or
+     * disappeared from every catalog. Manually imported data ages out the same way, and every
+     * source republishes active satellites well within that window.
+     */
+    private suspend fun pruneStaleEntries() {
+        val currentDaynum = OrbitalData.timeToDaynum(System.currentTimeMillis())
+        val staleIds = localSource.getEntriesEpochs()
+            .filterValues { epoch -> currentDaynum - OrbitalData.epochToDaynum(epoch) > 30.0 }
+            .keys.toList()
+        if (staleIds.isNotEmpty()) localSource.deleteEntriesWithIds(staleIds)
+    }
+
     private suspend fun setUpdateSuccessful(timestamp: Long) {
         settingsRepo.updateDatabaseState(
             DatabaseState(localSource.getRadiosTotal(), localSource.getEntriesTotal(), timestamp)

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/SatelliteRepo.kt

@@ -34,6 +34,7 @@ import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.withContext
 import java.util.TimeZone
@@ -64,19 +65,23 @@ class SatelliteRepo(
     override suspend fun getRadiosWithId(id: Int) = localStorage.getRadiosWithId(id)
 
     override suspend fun initRepository() = withContext(dispatcher) {
-        settingsRepo.selectedIds.collect { selectedIds ->
-            _satellites.update { localStorage.getEntriesWithIds(selectedIds) }
-            val settings = settingsRepo.passesSettings.value
-            calculatePasses(
-                time = System.currentTimeMillis(),
-                hoursAhead = settings.hoursAhead,
-                minElevation = settings.minElevation,
-                aosStartMinute = settings.aosStartMinute,
-                aosEndMinute = settings.aosEndMinute,
-                invertAosTimeWindow = settings.invertAosTimeWindow,
-                modes = settingsRepo.selectedSatModes.value
-            )
-        }
+        combine(
+            settingsRepo.selectedIds,
+            settingsRepo.stationPosition
+        ) { selectedIds, _ -> selectedIds }
+            .collect { selectedIds ->
+                _satellites.update { localStorage.getEntriesWithIds(selectedIds) }
+                val settings = settingsRepo.passesSettings.value
+                calculatePasses(
+                    time = System.currentTimeMillis(),
+                    hoursAhead = settings.hoursAhead,
+                    minElevation = settings.minElevation,
+                    aosStartMinute = settings.aosStartMinute,
+                    aosEndMinute = settings.aosEndMinute,
+                    invertAosTimeWindow = settings.invertAosTimeWindow,
+                    modes = settingsRepo.selectedSatModes.value
+                )
+            }
     }
 
     override suspend fun getPosition(sat: OrbitalObject, pos: GeoPos, time: Long): OrbitalPos {

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/SettingsRepo.kt

@@ -29,19 +29,24 @@ import com.rtbishop.look4sat.core.domain.model.OtherSettings
 import com.rtbishop.look4sat.core.domain.model.PassesSettings
 import com.rtbishop.look4sat.core.domain.model.RCSettings
 import com.rtbishop.look4sat.core.domain.model.RadioControlSettings
+import com.rtbishop.look4sat.core.domain.model.Constants
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
+import com.rtbishop.look4sat.core.domain.source.Sources
 import com.rtbishop.look4sat.core.domain.utility.positionToQth
 import com.rtbishop.look4sat.core.domain.utility.qthToPosition
 import com.rtbishop.look4sat.core.domain.utility.round
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.update
+import org.json.JSONObject
+import java.util.Locale
 
 class SettingsRepo(
     private val locationManager: LocationManager,
     private val preferences: SharedPreferences,
-    override val appVersionName: String
+    override val appVersionName: String,
+    override val appVersionCode: Long,
 ) : ISettingsRepo, LocationListenerCompat {
 
     private val keyBluetoothRotatorAddress = "bluetoothAddress"
@@ -67,6 +72,7 @@ class SettingsRepo(
     private val keyFrequencyAddress = "frequencyAddress"
     private val keyFrequencyPort = "frequencyPort"
     private val keyFrequencyFormat = "frequencyFormat"
+    private val keyFrequencyOffsetHz = "frequencyOffsetHz"
     private val keySelectedIds = "selectedIds"
     private val keySelectedSatModes = "selectedSatModes"
     private val keyStateOfAutoUpdate = "stateOfAutoUpdate"
@@ -82,17 +88,32 @@ class SettingsRepo(
     private val keyStationTimestamp = "stationTimestamp"
     private val keyUpdateTimestamp = "updateTimestamp"
     private val keyShouldSeeWarning = "shouldSeeWarning"
-    private val keyShouldSeeWhatsNew = "shouldSeeWhatsNew_v$appVersionName"
+    private val keyShouldSeeWhatsNew = "shouldSeeWhatsNew"
     private val keySstvMode = "sstvMode"
     private val keyLowElevation = "lowElevation"
     private val keyHighElevation = "highElevation"
     private val keyRadarCompassOffset = "radarCompassOffset"
     private val keyRadarCompassOffsetElev = "radarCompassOffsetElev"
-    private val keyUseCustomTle = "useCustomTle"
-    private val keyUseCustomTransceivers = "useCustomTransceivers"
-    private val keyTleUrl = "tleUrl"
-    private val keyTransceiversUrl = "transceiversUrl"
+    private val keySatellitesUrls = "satellitesUrls"
+    private val keyTransceiversUrls = "transceiversUrls"
+    private val keySatellitesUrlsEnabled = "satellitesUrlsEnabled"
+    private val keyTransceiversUrlsEnabled = "transceiversUrlsEnabled"
+    private val keySettingsVersion = "settingsVersion"
     private val separatorComma = ","
+    private val separatorUrl = "\n"
+
+    init {
+        // The meaning of the data source order changed, so the stored lists are dropped and the defaults
+        // are applied again. The update timestamp is cleared as well, to refresh the migrated data
+        // on the first launch instead of waiting up to 48 hours for the automatic update.
+        if (preferences.getInt(keySettingsVersion, 0) < appVersionCode) {
+            preferences.edit {
+                listOf(keyShouldSeeWhatsNew, keySatellitesUrls, keyTransceiversUrls, keyUpdateTimestamp)
+                    .forEach { key -> remove(key) }
+                putInt(keySettingsVersion, appVersionCode.toInt())
+            }
+        }
+    }
 
     //region # Satellites selection settings
     private val _satelliteSelection = MutableStateFlow(getSelectedIds())
@@ -276,6 +297,10 @@ class SettingsRepo(
     override val rcSettings: StateFlow<RCSettings> = _rcSettings
 
     override fun updateRCSettings(settings: RCSettings) {
+        val clampedFreqOffsetHz = settings.frequencyOffsetHz.coerceIn(
+            Constants.FREQ_OFFSET_MIN_HZ,
+            Constants.FREQ_OFFSET_MAX_HZ
+        )
         preferences.edit {
             putBoolean(keyRotatorState, settings.rotatorState)
             putString(keyRotatorAddress, settings.rotatorAddress)
@@ -285,6 +310,7 @@ class SettingsRepo(
             putString(keyFrequencyAddress, settings.frequencyAddress)
             putString(keyFrequencyPort, settings.frequencyPort)
             putString(keyFrequencyFormat, settings.frequencyFormat)
+            putLong(keyFrequencyOffsetHz, clampedFreqOffsetHz)
             putBoolean(keyBluetoothRotatorState, settings.bluetoothRotatorState)
             putString(keyBluetoothRotatorFormat, settings.bluetoothRotatorFormat)
             putString(keyBluetoothRotatorName, settings.bluetoothRotatorName)
@@ -293,7 +319,7 @@ class SettingsRepo(
             putString(keyBluetoothFrequencyFormat, settings.bluetoothFrequencyFormat)
             putString(keyBluetoothFrequencyAddress, settings.bluetoothFrequencyAddress)
         }
-        _rcSettings.value = settings
+        _rcSettings.value = settings.copy(frequencyOffsetHz = clampedFreqOffsetHz)
     }
 
     private fun getRCSettings(): RCSettings = RCSettings(
@@ -305,6 +331,8 @@ class SettingsRepo(
         frequencyAddress = preferences.getString(keyFrequencyAddress, null) ?: "127.0.0.1",
         frequencyPort = preferences.getString(keyFrequencyPort, null) ?: "4532",
         frequencyFormat = preferences.getString(keyFrequencyFormat, null) ?: $$"F $FREQ",
+        frequencyOffsetHz = preferences.getLong(keyFrequencyOffsetHz, 0L)
+            .coerceIn(Constants.FREQ_OFFSET_MIN_HZ, Constants.FREQ_OFFSET_MAX_HZ),
         bluetoothRotatorState = preferences.getBoolean(keyBluetoothRotatorState, false),
         bluetoothRotatorFormat = preferences.getString(keyBluetoothRotatorFormat, null) ?: $$"P $AZ $EL",
         bluetoothRotatorName = preferences.getString(keyBluetoothRotatorName, null) ?: "Default",
@@ -363,21 +391,73 @@ class SettingsRepo(
     override val dataSourcesSettings: StateFlow<DataSourcesSettings> = _dataSourcesSettings
 
     override fun updateDataSourcesSettings(settings: DataSourcesSettings) {
+        // Normalize the enabled lists so they are positionally aligned with the URL lists.
+        // Missing entries default to enabled (true), keeping the persisted "one flag per URL"
+        // invariant intact even when a default empty list is used to construct the model.
+        val normalized = settings.copy(
+            satelliteEnabled = alignFlags(settings.satelliteUrls, settings.satelliteEnabled),
+            transceiversEnabled = alignFlags(settings.transceiversUrls, settings.transceiversEnabled)
+        )
         preferences.edit {
-            putBoolean(keyUseCustomTle, settings.useCustomTLE)
-            putBoolean(keyUseCustomTransceivers, settings.useCustomTransceivers)
-            putString(keyTleUrl, settings.tleUrl)
-            putString(keyTransceiversUrl, settings.transceiversUrl)
+            putString(keySatellitesUrls, normalized.satelliteUrls.joinToString(separatorUrl))
+            putString(keyTransceiversUrls, normalized.transceiversUrls.joinToString(separatorUrl))
+            putString(keySatellitesUrlsEnabled, normalized.satelliteEnabled.joinToString(separatorComma))
+            putString(keyTransceiversUrlsEnabled, normalized.transceiversEnabled.joinToString(separatorComma))
         }
-        _dataSourcesSettings.value = settings
+        _dataSourcesSettings.value = normalized
     }
 
-    private fun getDataSourcesSettings(): DataSourcesSettings = DataSourcesSettings(
-        useCustomTLE = preferences.getBoolean(keyUseCustomTle, false),
-        useCustomTransceivers = preferences.getBoolean(keyUseCustomTransceivers, false),
-        tleUrl = preferences.getString(keyTleUrl, "https://example.com/tle.txt") ?: "",
-        transceiversUrl = preferences.getString(keyTransceiversUrl, "https://example.com/radio.json") ?: ""
-    )
+    private fun getDataSourcesSettings(): DataSourcesSettings {
+        val (satUrls, satEnabled) = parseSources(
+            preferences.getString(keySatellitesUrls, null),
+            preferences.getString(keySatellitesUrlsEnabled, null),
+            Sources.satelliteDataUrls
+        )
+        val (txUrls, txEnabled) = parseSources(
+            preferences.getString(keyTransceiversUrls, null),
+            preferences.getString(keyTransceiversUrlsEnabled, null),
+            Sources.transceiversDataUrls
+        )
+        return DataSourcesSettings(
+            satelliteUrls = satUrls,
+            transceiversUrls = txUrls,
+            satelliteEnabled = satEnabled,
+            transceiversEnabled = txEnabled
+        )
+    }
+
+    private fun parseSources(
+        storedUrls: String?,
+        storedEnabled: String?,
+        defaults: List<String>
+    ): Pair<List<String>, List<Boolean>> {
+        if (storedUrls == null) return defaults to defaults.map { true }
+        val urls = storedUrls.split(separatorUrl)
+        val flags = if (storedEnabled.isNullOrEmpty()) emptyList() else storedEnabled.split(separatorComma)
+        val filteredUrls = mutableListOf<String>()
+        val filteredFlags = mutableListOf<Boolean>()
+        urls.forEachIndexed { index, url ->
+            if (url.isNotBlank()) {
+                filteredUrls.add(url)
+                filteredFlags.add(flags.getOrNull(index)?.toBoolean() ?: true)
+            }
+        }
+        return filteredUrls to filteredFlags
+    }
+
+    private fun alignFlags(urls: List<String>, flags: List<Boolean>): List<Boolean> {
+        if (flags.size >= urls.size) return flags.take(urls.size)
+        return flags + List(urls.size - flags.size) { true }
+    }
+    //endregion
+
+    //region # Data sources status
+    private val _dataSourcesStatus = MutableStateFlow<Map<String, Int>>(emptyMap())
+    override val dataSourcesStatus: StateFlow<Map<String, Int>> = _dataSourcesStatus
+
+    override fun updateDataSourcesStatus(status: Map<String, Int>) {
+        _dataSourcesStatus.value = status
+    }
     //endregion
 
     //region # Radio control settings
@@ -417,5 +497,39 @@ class SettingsRepo(
         baudRate = preferences.getInt(keyRadioBaudRate, 4800),
         splitMode = preferences.getBoolean(keyRadioSplitMode, false)
     )
+
+    private val keySatelliteOffsets = "satelliteOffsets"
+
+    override fun getSatelliteOffset(catnum: Int): String {
+        val json = preferences.getString(keySatelliteOffsets, "{}") ?: "{}"
+        return try {
+            JSONObject(json).optString(catnum.toString(), "")
+        } catch (_: Exception) {
+            ""
+        }
+    }
+
+    override fun setSatelliteOffset(catnum: Int, offset: String) {
+        val json = preferences.getString(keySatelliteOffsets, "{}") ?: "{}"
+        val updated = try {
+            val obj = JSONObject(json)
+            if (offset.isEmpty()) obj.remove(catnum.toString()) else obj.put(catnum.toString(), offset)
+            obj.toString()
+        } catch (_: Exception) {
+            """{"$catnum": "$offset"}"""
+        }
+        preferences.edit { putString(keySatelliteOffsets, updated) }
+    }
+
+    //region # AMSAT status report settings
+    private val keyAmSatCallsign = "amSatCallsign"
+
+    override fun getAmSatCallsign(): String {
+        return preferences.getString(keyAmSatCallsign, "").orEmpty()
+    }
+
+    override fun setAmSatCallsign(callsign: String) {
+        preferences.edit { putString(keyAmSatCallsign, callsign.trim().uppercase(Locale.US)) }
+    }
     //endregion
 }

core/data/src/main/java/com/rtbishop/look4sat/core/data/source/LocalSource.kt

@@ -43,6 +43,16 @@ class LocalSource(private val look4SatDao: Look4SatDao) : ILocalSource {
         return selectedOrbitalObjects
     }
 
+    override suspend fun getEntriesEpochs() = look4SatDao.getEntriesEpochs()
+
+    override suspend fun getEntriesNames() = look4SatDao.getEntriesNames()
+
+    override suspend fun renameEntries(names: Map<Int, String>) =
+        names.forEach { (catnum, name) -> look4SatDao.renameEntry(catnum, name) }
+
+    override suspend fun deleteEntriesWithIds(ids: List<Int>) =
+        ids.chunked(999).forEach { idsPart -> look4SatDao.deleteEntriesWithIds(idsPart) }
+
     override suspend fun insertEntries(entries: List<OrbitalData>) = look4SatDao.insertEntries(entries.toEntity())
 
     override suspend fun deleteEntries() = look4SatDao.deleteEntries()
@@ -51,12 +61,12 @@ class LocalSource(private val look4SatDao: Look4SatDao) : ILocalSource {
 
     private fun FrameworkEntry.toDomain() = OrbitalData(
         this.name, this.epoch, this.meanmo, this.eccn, this.incl,
-        this.raan, this.argper, this.meanan, this.catnum, this.bstar
+        this.raan, this.argper, this.meanan, this.catnum, this.bstar, this.ndot
     )
 
     private fun OrbitalData.toEntity() = FrameworkEntry(
         this.name, this.epoch, this.meanmo, this.eccn, this.incl,
-        this.raan, this.argper, this.meanan, this.catnum, this.bstar
+        this.raan, this.argper, this.meanan, this.catnum, this.bstar, this.ndot
     )
 
     private fun List<OrbitalData>.toEntity() = this.map { item -> item.toEntity() }
@@ -73,15 +83,17 @@ class LocalSource(private val look4SatDao: Look4SatDao) : ILocalSource {
         return look4SatDao.getRadiosWithId(id).toDomainRadios()
     }
 
-    override suspend fun insertRadios(radios: List<SatRadio>) {
-        look4SatDao.insertRadios(radios.toFrameworkRadios())
+    override suspend fun insertRadios(radios: List<SatRadio>, isCustom: Boolean) {
+        look4SatDao.insertRadios(radios.map { radio -> radio.toFramework(isCustom) })
     }
 
     override suspend fun deleteRadios() = look4SatDao.deleteRadios()
 
-    private fun DomainRadio.toFramework() = FrameworkRadio(
+    override suspend fun deleteManagedRadios() = look4SatDao.deleteManagedRadios()
+
+    private fun DomainRadio.toFramework(isCustom: Boolean = false) = FrameworkRadio(
         this.uuid, this.info, this.isAlive, this.downlinkLow, this.downlinkHigh, this.downlinkMode,
-        this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum
+        this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum, isCustom
     )
 
     private fun FrameworkRadio.toDomain() = DomainRadio(
@@ -89,8 +101,6 @@ class LocalSource(private val look4SatDao: Look4SatDao) : ILocalSource {
         this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum
     )
 
-    private fun List<DomainRadio>.toFrameworkRadios() = this.map { radio -> radio.toFramework() }
-
     private fun List<FrameworkRadio>.toDomainRadios() = this.map { radio -> radio.toDomain() }
 
     //endregion

core/data/src/main/java/com/rtbishop/look4sat/core/data/source/RemoteSource.kt

@@ -20,10 +20,13 @@ package com.rtbishop.look4sat.core.data.source
 import android.content.ContentResolver
 import androidx.core.net.toUri
 import com.rtbishop.look4sat.core.domain.source.IRemoteSource
+import com.rtbishop.look4sat.core.domain.source.NetworkResult
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.withContext
+import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.OkHttpClient
 import okhttp3.Request
+import okhttp3.RequestBody.Companion.toRequestBody
 import java.io.InputStream
 
 class RemoteSource(
@@ -42,19 +45,74 @@ class RemoteSource(
         }
     }
 
-    override suspend fun getNetworkStream(url: String): InputStream? = withContext(dispatcher) {
+    override suspend fun getNetworkStream(url: String): NetworkResult = withContext(dispatcher) {
         try {
             val networkRequest = Request.Builder().url(url).build()
             val response = httpClient.newCall(networkRequest).execute()
             if (!response.isSuccessful) {
+                val code = response.code
                 response.close()
-                return@withContext null
+                return@withContext NetworkResult(code, null)
             }
             // Return the body stream directly as the caller is responsible for closing it
             // That returns the connection to OkHttp's pool
-            response.body.byteStream().buffered()
+            val body = response.body
+            if (body == null) {
+                response.close()
+                return@withContext NetworkResult(response.code, null)
+            }
+            NetworkResult(response.code, body.byteStream().buffered())
         } catch (exception: Exception) {
             println("RemoteSource network stream exception: $exception")
+            NetworkResult(NetworkResult.CONNECTION_ERROR, null)
+        }
+    }
+
+    override suspend fun getAmSatCatalog(): String? = withContext(dispatcher) {
+        try {
+            val request = Request.Builder()
+                .url("https://www.amsat.org/status/api/v1/catalog.php")
+                .header("User-Agent", "Look4Sat")
+                .build()
+            httpClient.newCall(request).execute().use { response ->
+                if (!response.isSuccessful) return@use null
+                response.body.string()
+            }
+        } catch (exception: Exception) {
+            println("RemoteSource getAmSatCatalog exception: $exception")
+            null
+        }
+    }
+
+    override suspend fun getAmSatReports(hours: Int, limit: Int): String? = withContext(dispatcher) {
+        try {
+            val request = Request.Builder()
+                .url("https://www.amsat.org/status/api/v1/reports.php?hours=$hours&limit=$limit")
+                .header("User-Agent", "Look4Sat")
+                .build()
+            httpClient.newCall(request).execute().use { response ->
+                if (!response.isSuccessful) return@use null
+                response.body.string()
+            }
+        } catch (exception: Exception) {
+            println("RemoteSource getAmSatReports exception: $exception")
+            null
+        }
+    }
+
+    override suspend fun submitAmSatReport(payloadJson: String): Pair<Int, String>? = withContext(dispatcher) {
+        try {
+            val body = payloadJson.toRequestBody("application/json; charset=utf-8".toMediaType())
+            val request = Request.Builder()
+                .url("https://www.amsat.org/status/api/v1/reports.php")
+                .header("User-Agent", "Look4Sat")
+                .post(body)
+                .build()
+            httpClient.newCall(request).execute().use { response ->
+                response.code to response.body.string()
+            }
+        } catch (exception: Exception) {
+            println("RemoteSource submitAmSatReport exception: $exception")
             null
         }
     }

core/data/src/test/java/com/rtbishop/look4sat/core/data/repository/DatabaseRepoTest.kt

@@ -31,6 +31,7 @@ import com.rtbishop.look4sat.core.domain.predict.OrbitalObject
 import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
 import com.rtbishop.look4sat.core.domain.source.ILocalSource
 import com.rtbishop.look4sat.core.domain.source.IRemoteSource
+import com.rtbishop.look4sat.core.domain.source.NetworkResult
 import com.rtbishop.look4sat.core.domain.utility.DataParser
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -41,6 +42,7 @@ import org.junit.Assert.assertEquals
 import org.junit.Assert.assertTrue
 import org.junit.Test
 import java.io.InputStream
+import java.time.LocalDate
 
 @OptIn(ExperimentalCoroutinesApi::class)
 class DatabaseRepoTest {
@@ -48,6 +50,10 @@ class DatabaseRepoTest {
     private val dispatcher = StandardTestDispatcher()
     private val dataParser = DataParser(dispatcher)
 
+    // fixtures carry a current epoch: stale entries are pruned on every remote update
+    private val todayEpoch = LocalDate.now().let { "%02d%03d".format(it.year % 100, it.dayOfYear) }
+    private val fresherEpoch = "$todayEpoch.71955234".toDouble()
+
     @Test
     fun `manual satellite import parses csv stream from content uri`() = runTest(dispatcher) {
         val uri = "content://look4sat/import/satellites"
@@ -90,10 +96,8 @@ class DatabaseRepoTest {
         }
         val settingsRepo = FakeSettingsRepo(
             dataSources = DataSourcesSettings(
-                useCustomTLE = true,
-                useCustomTransceivers = false,
-                tleUrl = customCsvUrl,
-                transceiversUrl = ""
+                satelliteUrls = listOf(customCsvUrl),
+                transceiversUrls = emptyList()
             )
         )
         val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
@@ -103,30 +107,198 @@ class DatabaseRepoTest {
         assertTrue(localSource.insertedEntries.any { it.catnum == 25544 })
     }
 
+    @Test
+    fun `remote update takes the freshest elements and the preferred name`() = runTest(dispatcher) {
+        val primaryUrl = "https://example.com/primary.txt"
+        val secondaryUrl = "https://example.com/secondary.txt"
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource().apply {
+            networkStreams[primaryUrl] = { validTleStream() }
+            networkStreams[secondaryUrl] = { fresherTleStream() }
+        }
+        val settingsRepo = FakeSettingsRepo(
+            dataSources = DataSourcesSettings(
+                satelliteUrls = listOf(primaryUrl, secondaryUrl),
+                transceiversUrls = emptyList()
+            )
+        )
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+
+        repository.updateFromRemote()
+
+        val entry = localSource.insertedEntries.single { it.catnum == 25544 }
+        assertEquals("ISS (ZARYA)", entry.name)
+        assertEquals(fresherEpoch, entry.epoch, 1e-8)
+    }
+
+    @Test
+    fun `manual satellite import does not overwrite fresher data`() = runTest(dispatcher) {
+        val freshUri = "content://look4sat/import/fresh"
+        val staleUri = "content://look4sat/import/stale"
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource().apply {
+            fileStreams[freshUri] = { fresherTleStream() }
+            fileStreams[staleUri] = { validTleStream() }
+        }
+        val settingsRepo = FakeSettingsRepo()
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+
+        assertEquals(1, repository.updateTLEFromFile(freshUri))
+        assertEquals(1, repository.updateTLEFromFile(staleUri))
+        assertEquals(fresherEpoch, localSource.insertedEntries.single().epoch, 1e-8)
+    }
+
+    @Test
+    fun `remote update drops transceivers that are no longer published`() = runTest(dispatcher) {
+        val radioUrl = "https://example.com/transmitters.json"
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource()
+        val settingsRepo = FakeSettingsRepo(
+            dataSources = DataSourcesSettings(
+                satelliteUrls = emptyList(),
+                transceiversUrls = listOf(radioUrl)
+            )
+        )
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+
+        remoteSource.networkStreams[radioUrl] = { twoRadiosStream() }
+        repository.updateFromRemote()
+        assertEquals(2, localSource.insertedRadios.size)
+
+        remoteSource.networkStreams[radioUrl] = { singleRadioStream() }
+        repository.updateFromRemote()
+        assertEquals(listOf("uuid-alive"), localSource.insertedRadios.map { it.uuid })
+    }
+
+    @Test
+    fun `remote update renames satellites even when their elements are not newer`() = runTest(dispatcher) {
+        val preferredUrl = "https://example.com/preferred.txt"
+        val freshUrl = "https://example.com/fresh.txt"
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource().apply {
+            networkStreams[freshUrl] = { fresherTleStream() }
+        }
+        val settingsRepo = FakeSettingsRepo(
+            dataSources = DataSourcesSettings(
+                satelliteUrls = listOf(freshUrl),
+                transceiversUrls = emptyList()
+            )
+        )
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+        repository.updateFromRemote()
+        assertEquals("ISS", localSource.insertedEntries.single().name)
+
+        // the user moves a source with older elements, but a better name, to the top of the list
+        remoteSource.networkStreams[preferredUrl] = { validTleStream() }
+        settingsRepo.dataSourcesSettings.value = DataSourcesSettings(
+            satelliteUrls = listOf(preferredUrl, freshUrl),
+            transceiversUrls = emptyList()
+        )
+        repository.updateFromRemote()
+
+        val entry = localSource.insertedEntries.single()
+        assertEquals("ISS (ZARYA)", entry.name)
+        assertEquals(fresherEpoch, entry.epoch, 1e-8)
+    }
+
+    @Test
+    fun `failed remote update records the attempt without claiming success`() = runTest(dispatcher) {
+        val failingUrl = "https://example.com/offline.txt"
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource()
+        val settingsRepo = FakeSettingsRepo(
+            dataSources = DataSourcesSettings(
+                satelliteUrls = listOf(failingUrl),
+                transceiversUrls = emptyList()
+            )
+        )
+        settingsRepo.databaseState.value = DatabaseState(0, 0, 1_000L)
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+        repository.updateFromRemote()
+
+        // the update timestamp stays put so the data is not presented as fresh, while the recorded
+        // attempt keeps the next app launch from hammering a source that is already failing
+        assertEquals(1_000L, settingsRepo.databaseState.value.updateTimestamp)
+    }
+
+    @Test
+    fun `remote update keeps the transceivers imported from a file`() = runTest(dispatcher) {
+        val radioUri = "content://imported.json"
+        val radioUrl = "https://example.com/transmitters.json"
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource().apply {
+            fileStreams[radioUri] = { customRadioStream() }
+            networkStreams[radioUrl] = { singleRadioStream() }
+        }
+        val settingsRepo = FakeSettingsRepo(
+            dataSources = DataSourcesSettings(
+                satelliteUrls = emptyList(),
+                transceiversUrls = listOf(radioUrl)
+            )
+        )
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+        repository.updateTransceiversFromFile(radioUri)
+        repository.updateFromRemote()
+
+        // the remote snapshot replaces what the sources publish, the imported entry stays put
+        assertEquals(setOf("uuid-custom", "uuid-alive"), localSource.insertedRadios.map { it.uuid }.toSet())
+    }
+
     private fun validCsvStream(): InputStream = """
         OBJECT_NAME,OBJECT_ID,EPOCH,MEAN_MOTION,ECCENTRICITY,INCLINATION,RA_OF_ASC_NODE,ARG_OF_PERICENTER,MEAN_ANOMALY,EPHEMERIS_TYPE,CLASSIFICATION_TYPE,NORAD_CAT_ID,ELEMENT_SET_NO,REV_AT_EPOCH,BSTAR,MEAN_MOTION_DOT,MEAN_MOTION_DDOT
-        ISS (ZARYA),1998-067A,2021-11-16T12:28:09.322176,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876,0,U,25544,999,31220,.31985E-4,.1288E-4,0
+        ISS (ZARYA),1998-067A,${LocalDate.now()}T12:28:09.322176,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876,0,U,25544,999,31220,.31985E-4,.1288E-4,0
     """.trimIndent().byteInputStream()
 
     private fun validTleStream(): InputStream = """
         ISS (ZARYA)
-        1 25544U 98067A   21320.51955234  .00001288  00000+0  31985-4 0  9990
+        1 25544U 98067A   $todayEpoch.51955234  .00001288  00000+0  31985-4 0  9990
         2 25544  51.6447 309.4881 0004694 203.6966 299.8876 15.48582035312205
     """.trimIndent().byteInputStream()
+
+    private fun fresherTleStream(): InputStream = """
+        ISS
+        1 25544U 98067A   $todayEpoch.71955234  .00001288  00000+0  31985-4 0  9990
+        2 25544  51.6447 309.4881 0004694 203.6966 299.8876 15.48582035312205
+    """.trimIndent().byteInputStream()
+
+    private fun twoRadiosStream(): InputStream = """
+        [$radioAlive,{"uuid":"uuid-retired","description":"Retired","alive":true,"downlink_low":437800000,
+        "mode":"FM","invert":false,"norad_cat_id":25544}]
+    """.trimIndent().byteInputStream()
+
+    private fun singleRadioStream(): InputStream = "[$radioAlive]".byteInputStream()
+
+    private fun customRadioStream(): InputStream = """
+        [{"uuid":"uuid-custom","description":"Local beacon","alive":true,"downlink_low":144800000,
+        "mode":"FM","invert":false,"norad_cat_id":25544}]
+    """.trimIndent().byteInputStream()
 }
 
+private const val radioAlive = """{"uuid":"uuid-alive","description":"Voice repeater","alive":true,
+    "downlink_low":145800000,"mode":"FM","invert":false,"norad_cat_id":25544}"""
+
 private class FakeRemoteSource : IRemoteSource {
     val fileStreams: MutableMap<String, () -> InputStream> = mutableMapOf()
     val networkStreams: MutableMap<String, () -> InputStream> = mutableMapOf()
 
     override suspend fun getFileStream(uri: String): InputStream? = fileStreams[uri]?.invoke()
 
-    override suspend fun getNetworkStream(url: String): InputStream? = networkStreams[url]?.invoke()
+    override suspend fun getNetworkStream(url: String): NetworkResult {
+        val stream = networkStreams[url]?.invoke()
+        return if (stream != null) NetworkResult(200, stream) else NetworkResult(404, null)
+    }
+
+    override suspend fun getAmSatCatalog(): String? = null
+
+    override suspend fun getAmSatReports(hours: Int, limit: Int): String? = null
+
+    override suspend fun submitAmSatReport(payloadJson: String): Pair<Int, String>? = null
 }
 
 private class FakeLocalSource : ILocalSource {
     val insertedEntries = mutableListOf<OrbitalData>()
-    private val insertedRadios = mutableListOf<SatRadio>()
+    val insertedRadios = mutableListOf<SatRadio>()
+    private val customRadios = mutableListOf<String>()
 
     override suspend fun getEntriesTotal(): Int = insertedEntries.size
 
@@ -134,6 +306,21 @@ private class FakeLocalSource : ILocalSource {
 
     override suspend fun getEntriesWithIds(ids: List<Int>): List<OrbitalObject> = emptyList()
 
+    override suspend fun getEntriesEpochs(): Map<Int, Double> =
+        insertedEntries.associate { entry -> entry.catnum to entry.epoch }
+
+    override suspend fun getEntriesNames(): Map<Int, String> =
+        insertedEntries.associate { entry -> entry.catnum to entry.name }
+
+    override suspend fun renameEntries(names: Map<Int, String>) = names.forEach { (catnum, name) ->
+        val index = insertedEntries.indexOfFirst { entry -> entry.catnum == catnum }
+        if (index >= 0) insertedEntries[index] = insertedEntries[index].copy(name = name)
+    }
+
+    override suspend fun deleteEntriesWithIds(ids: List<Int>) {
+        insertedEntries.removeAll { entry -> entry.catnum in ids }
+    }
+
     override suspend fun insertEntries(entries: List<OrbitalData>) {
         insertedEntries += entries
     }
@@ -148,18 +335,27 @@ private class FakeLocalSource : ILocalSource {
 
     override suspend fun getRadiosWithId(id: Int): List<SatRadio> = emptyList()
 
-    override suspend fun insertRadios(radios: List<SatRadio>) {
+    override suspend fun insertRadios(radios: List<SatRadio>, isCustom: Boolean) {
+        insertedRadios.removeAll { stored -> radios.any { radio -> radio.uuid == stored.uuid } }
         insertedRadios += radios
+        if (isCustom) customRadios += radios.map { radio -> radio.uuid }
+        else customRadios -= radios.map { radio -> radio.uuid }.toSet()
     }
 
     override suspend fun deleteRadios() {
         insertedRadios.clear()
+        customRadios.clear()
+    }
+
+    override suspend fun deleteManagedRadios() {
+        insertedRadios.removeAll { radio -> radio.uuid !in customRadios }
     }
 }
 
 private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSourcesSettings()) : ISettingsRepo {
 
     override val appVersionName: String = "test"
+    override val appVersionCode: Long = 1L
 
     override val selectedIds: StateFlow<List<Int>> = MutableStateFlow(emptyList())
 
@@ -174,7 +370,7 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
     override val databaseState: MutableStateFlow<DatabaseState> = MutableStateFlow(DatabaseState(0, 0, 0L))
 
     override val rcSettings: StateFlow<RCSettings> = MutableStateFlow(
-        RCSettings(false, "", "", "", false, "", "", "", false, "", "", "", false, "", "")
+        RCSettings(false, "", "", "", false, "", "", "", 0L, false, "", "", "", false, "", "")
     )
 
     override val otherSettings: StateFlow<OtherSettings> = MutableStateFlow(
@@ -183,6 +379,8 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
 
     override val dataSourcesSettings: MutableStateFlow<DataSourcesSettings> = MutableStateFlow(dataSources)
 
+    override val dataSourcesStatus: MutableStateFlow<Map<String, Int>> = MutableStateFlow(emptyMap())
+
     override val radioControlSettings: StateFlow<RadioControlSettings> = MutableStateFlow(
         RadioControlSettings(false, RadioControlSettings.MODEL_YAESU_FT817, "", "", "", "", 9600)
     )
@@ -212,14 +410,24 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
         dataSourcesSettings.value = settings
     }
 
+    override fun updateDataSourcesStatus(status: Map<String, Int>) {
+        dataSourcesStatus.value = status
+    }
+
     override fun updateRadioControlSettings(settings: RadioControlSettings) = Unit
+
+    override fun getSatelliteOffset(catnum: Int): String = ""
+
+    override fun setSatelliteOffset(catnum: Int, offset: String) = Unit
+
+    override fun getAmSatCallsign(): String = ""
+
+    override fun setAmSatCallsign(callsign: String) = Unit
 }
 
 private fun defaultDataSourcesSettings(): DataSourcesSettings {
     return DataSourcesSettings(
-        useCustomTLE = false,
-        useCustomTransceivers = false,
-        tleUrl = "",
-        transceiversUrl = ""
+        satelliteUrls = emptyList(),
+        transceiversUrls = emptyList()
     )
 }

core/data/src/test/java/com/rtbishop/look4sat/core/data/repository/SelectionRepoTest.kt

@@ -93,6 +93,14 @@ class SelectionRepoTest {
 
         override suspend fun getEntriesWithIds(ids: List<Int>): List<OrbitalObject> = emptyList()
 
+        override suspend fun getEntriesEpochs(): Map<Int, Double> = emptyMap()
+
+        override suspend fun getEntriesNames(): Map<Int, String> = emptyMap()
+
+        override suspend fun renameEntries(names: Map<Int, String>) = Unit
+
+        override suspend fun deleteEntriesWithIds(ids: List<Int>) = Unit
+
         override suspend fun insertEntries(entries: List<com.rtbishop.look4sat.core.domain.predict.OrbitalData>) = Unit
 
         override suspend fun deleteEntries() = Unit
@@ -103,9 +111,11 @@ class SelectionRepoTest {
 
         override suspend fun getRadiosWithId(id: Int): List<SatRadio> = emptyList()
 
-        override suspend fun insertRadios(radios: List<SatRadio>) = Unit
+        override suspend fun insertRadios(radios: List<SatRadio>, isCustom: Boolean) = Unit
 
         override suspend fun deleteRadios() = Unit
+
+        override suspend fun deleteManagedRadios() = Unit
     }
 
     private class FakeSettingsRepo(
@@ -113,6 +123,7 @@ class SelectionRepoTest {
     ) : ISettingsRepo {
 
         override val appVersionName: String = "test"
+        override val appVersionCode: Long = 1L
 
         override val selectedIds: StateFlow<List<Int>> = MutableStateFlow(emptyList())
 
@@ -127,7 +138,7 @@ class SelectionRepoTest {
         override val databaseState: MutableStateFlow<DatabaseState> = MutableStateFlow(DatabaseState(0, 0, 0L))
 
         override val rcSettings: StateFlow<RCSettings> = MutableStateFlow(
-            RCSettings(false, "", "", "", false, "", "", "", false, "", "", "", false, "", "")
+            RCSettings(false, "", "", "", false, "", "", "", 0L, false, "", "", "", false, "", "")
         )
 
         override val otherSettings: StateFlow<OtherSettings> = MutableStateFlow(
@@ -135,9 +146,11 @@ class SelectionRepoTest {
         )
 
         override val dataSourcesSettings: StateFlow<DataSourcesSettings> = MutableStateFlow(
-            DataSourcesSettings(false, false, "", "")
+            DataSourcesSettings(emptyList(), emptyList())
         )
 
+        override val dataSourcesStatus: StateFlow<Map<String, Int>> = MutableStateFlow(emptyMap())
+
         override val radioControlSettings: StateFlow<RadioControlSettings> = MutableStateFlow(
             RadioControlSettings(false, RadioControlSettings.MODEL_YAESU_FT817, "", "", "", "", 9600)
         )
@@ -166,8 +179,16 @@ class SelectionRepoTest {
 
         override fun updateDataSourcesSettings(settings: DataSourcesSettings) = Unit
 
+        override fun updateDataSourcesStatus(status: Map<String, Int>) = Unit
+
         override fun updateRadioControlSettings(settings: RadioControlSettings) = Unit
+
+        override fun getSatelliteOffset(catnum: Int): String = ""
+
+        override fun setSatelliteOffset(catnum: Int, offset: String) = Unit
+
+        override fun getAmSatCallsign(): String = ""
+
+        override fun setAmSatCallsign(callsign: String) = Unit
     }
 }
-
-

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/AmSatReportSubmission.kt

@@ -0,0 +1,17 @@
+package com.rtbishop.look4sat.core.domain.model
+
+/** One public AMSAT satellite status report submission. */
+data class AmSatReportSubmission(
+    val name: String,
+    val report: String,
+    val callsign: String,
+    val gridSquare: String,
+    val reportedAtUtcMillis: Long
+)
+
+/** Result of submitting an AMSAT satellite status report. */
+data class AmSatReportSubmitResult(
+    val success: Boolean,
+    val message: String = "",
+    val reportId: String? = null
+)

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/Constants.kt

@@ -0,0 +1,23 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.model
+
+object Constants {
+    const val FREQ_OFFSET_MIN_HZ = -50_000L
+    const val FREQ_OFFSET_MAX_HZ = 50_000L
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/SatRadio.kt

@@ -20,17 +20,19 @@ package com.rtbishop.look4sat.core.domain.model
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
+/** Only the uuid is mandatory: third party sources rarely publish the full SatNOGS schema, and a
+ *  missing optional field should not cost the whole transceiver. */
 @Serializable
 data class SatRadio(
     @SerialName("uuid") val uuid: String,
-    @SerialName("description") val info: String,
-    @SerialName("alive") val isAlive: Boolean,
-    @SerialName("downlink_low") val downlinkLow: Long?,
-    @SerialName("downlink_high") val downlinkHigh: Long?,
-    @SerialName("mode") val downlinkMode: String?,
-    @SerialName("uplink_low") val uplinkLow: Long?,
-    @SerialName("uplink_high") val uplinkHigh: Long?,
-    @SerialName("uplink_mode") val uplinkMode: String?,
-    @SerialName("invert") val isInverted: Boolean,
-    @SerialName("norad_cat_id") val catnum: Int?
+    @SerialName("description") val info: String = "",
+    @SerialName("alive") val isAlive: Boolean = true,
+    @SerialName("downlink_low") val downlinkLow: Long? = null,
+    @SerialName("downlink_high") val downlinkHigh: Long? = null,
+    @SerialName("mode") val downlinkMode: String? = null,
+    @SerialName("uplink_low") val uplinkLow: Long? = null,
+    @SerialName("uplink_high") val uplinkHigh: Long? = null,
+    @SerialName("uplink_mode") val uplinkMode: String? = null,
+    @SerialName("invert") val isInverted: Boolean = false,
+    @SerialName("norad_cat_id") val catnum: Int? = null
 )

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/SatStatus.kt

@@ -0,0 +1,37 @@
+package com.rtbishop.look4sat.core.domain.model
+
+/** One satellite status report (AMSAT site tooltip data) */
+data class SatReport(
+    val id: String,          // 报告 ID(a885153)
+    val statusText: String,  // Heard / Telemetry Only / Not Heard ...
+    val call: String,        // 呼号
+    val grid: String,        // 网格坐标(可为空)
+    val dateUtc: String,     // 2026-08-04
+    val timeUtc: String      // 2:46-:59 UTC
+)
+
+/** State of one 2-hour slot */
+data class SatSlot(
+    val statusColor: Long,   // ARGB 状态色(-1 = 无报告)
+    val count: Int,          // 报告数量(0 = 无)
+    val reportIds: List<String> = emptyList() // 该槽报告 ID 列表
+)
+
+/** One satellite day (12 two-hour slots) */
+data class SatDay(
+    val dateLabel: String,   // "Aug 4"
+    val slots: List<SatSlot> // 12 槽(00-02 ... 22-24)
+)
+
+/** One satellite, 5 days of state */
+data class SatStatus(
+    val name: String,        // "AO-123_[FM]"
+    val days: List<SatDay>   // 5 天(新→旧)
+)
+
+/** Overall page parse result */
+data class SatStatusPage(
+    val fetchedAtUtcMs: Long,
+    val statuses: List<SatStatus>,
+    val reports: Map<String, SatReport> // id → 报告
+)

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/Settings.kt

@@ -41,6 +41,7 @@ data class RCSettings(
     val frequencyAddress: String,
     val frequencyPort: String,
     val frequencyFormat: String,
+    val frequencyOffsetHz: Long = 0L,
     val bluetoothRotatorState: Boolean,
     val bluetoothRotatorFormat: String,
     val bluetoothRotatorName: String,
@@ -66,12 +67,21 @@ data class OtherSettings(
     val radarCompassOffsetElev: Float = 0f
 )
 
+/**
+ * Data source URLs (TLE / transceivers) and their per-source enabled flags.
+ * [satelliteEnabled] and [transceiversEnabled] must be positionally aligned with the
+ * corresponding URL list: the flag at index [i] applies to the URL at index [i].
+ * Missing flags are treated as enabled (see [isSatelliteEnabled]/[isTransceiverEnabled]).
+ */
 data class DataSourcesSettings(
-    val useCustomTLE: Boolean,
-    val useCustomTransceivers: Boolean,
-    val tleUrl: String,
-    val transceiversUrl: String
-)
+    val satelliteUrls: List<String>,
+    val transceiversUrls: List<String>,
+    val satelliteEnabled: List<Boolean> = emptyList(),
+    val transceiversEnabled: List<Boolean> = emptyList()
+) {
+    fun isSatelliteEnabled(index: Int): Boolean = satelliteEnabled.getOrElse(index) { true }
+    fun isTransceiverEnabled(index: Int): Boolean = transceiversEnabled.getOrElse(index) { true }
+}
 
 data class RadioControlSettings(
     val enabled: Boolean,

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/predict/CelestialComputer.kt

@@ -424,8 +424,12 @@ object CelestialComputer {
         }
         if (sunrise == 0.0) sunrise = daynum
 
-        // Phase 4: fast-forward through the day until sun drops back below threshold
-        daynum = sunrise
+        // Phase 4: fast-forward through the day until sun drops back below threshold.
+        // Start from just after sunrise (small offset) so the sun is clearly above
+        // the threshold. This prevents a bug where Phase 3 converges to a point
+        // slightly below -threshold, causing Phase 4 to skip and Phase 5 to converge
+        // to the same time as sunrise, producing identical sunrise/sunset times.
+        daynum = sunrise + 0.001
         sunPos = getSunPosition(observer, daynumToMillis(daynum))
         guard = 0
         while (sunPos.elevation > -threshold && guard++ < 500) {

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/predict/OrbitalData.kt

@@ -37,30 +37,42 @@ data class OrbitalData(
     val xno: Double = meanmo * TWO_PI / MIN_PER_DAY
     val orbitalPeriod: Double = MIN_PER_DAY / meanmo
     val isDeepSpace: Boolean = orbitalPeriod >= 225.0 // NearEarth (period < 225 min) or DeepSpace (period >= 225 min)
+
+    /** Absolute age of this element set, used to pick the freshest data among several sources. */
+    val epochDaynum: Double = epochToDaynum(epoch)
+
     fun getObject(): OrbitalObject = if (isDeepSpace) DeepSpaceObject(this) else NearEarthObject(this)
 
     /** Check if satellite has likely decayed by the given time. */
     fun hasDecayed(currentTimeMillis: Long): Boolean {
         if (ndot == 0.0) return false
-        val currentDaynum = (currentTimeMillis - 315446400000L) / 86400000.0
-        val epochDaynum = epochToDaynum(epoch)
-        return CelestialComputer.hasDecayed(meanmo, ndot, epochDaynum, currentDaynum)
+        return CelestialComputer.hasDecayed(meanmo, ndot, epochDaynum, timeToDaynum(currentTimeMillis))
     }
 
-    private fun epochToDaynum(epoch: Double): Double {
-        var year = kotlin.math.floor(epoch * 1E-3)
-        val day = (epoch * 1E-3 - year) * 1000.0
-        year = if (year < 57) year + 2000 else year + 1900
-        // daynum = days since 31 Dec 1979, Julian date of 31Dec79 = 2444238.5
-        val jan1Jd = julianDateOfYear(year)
-        return jan1Jd + day - 2444238.5
-    }
+    companion object {
+        /** Days since 31 Dec 1979, the reference point every daynum in the app is based on. */
+        fun timeToDaynum(timeMillis: Long): Double = (timeMillis - 315446400000L) / 86400000.0
 
-    private fun julianDateOfYear(theYear: Double): Double {
-        val aYear = theYear - 1
-        val a = kotlin.math.floor(aYear / 100).toLong()
-        val b = 2 - a + a / 4
-        val i = kotlin.math.floor(365.25 * aYear).toLong()
-        return i + (30.6001 * 14).toLong() + 1720994.5 + b
+        /**
+         * Days since 31 Dec 1979 for a TLE style YYDDD.ffffffff epoch. Raw epochs are not
+         * comparable across decades (a 1999 epoch reads as 99xxx, a 2026 one as 26xxx), so
+         * freshness checks must always go through this conversion.
+         */
+        fun epochToDaynum(epoch: Double): Double {
+            var year = kotlin.math.floor(epoch * 1E-3)
+            val day = (epoch * 1E-3 - year) * 1000.0
+            year = if (year < 57) year + 2000 else year + 1900
+            // daynum = days since 31 Dec 1979, Julian date of 31Dec79 = 2444238.5
+            val jan1Jd = julianDateOfYear(year)
+            return jan1Jd + day - 2444238.5
+        }
+
+        private fun julianDateOfYear(theYear: Double): Double {
+            val aYear = theYear - 1
+            val a = kotlin.math.floor(aYear / 100).toLong()
+            val b = 2 - a + a / 4
+            val i = kotlin.math.floor(365.25 * aYear).toLong()
+            return i + (30.6001 * 14).toLong() + 1720994.5 + b
+        }
     }
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/IAmSatRepository.kt

@@ -0,0 +1,14 @@
+package com.rtbishop.look4sat.core.domain.repository
+
+import com.rtbishop.look4sat.core.domain.model.AmSatReportSubmission
+import com.rtbishop.look4sat.core.domain.model.AmSatReportSubmitResult
+import com.rtbishop.look4sat.core.domain.model.SatStatusPage
+
+/** AMSAT satellite status data source */
+interface IAmSatRepository {
+    /** Fetch and parse the AMSAT status page; null on failure */
+    suspend fun fetchStatus(): SatStatusPage?
+
+    /** Submit a public AMSAT satellite status report. */
+    suspend fun submitReport(submission: AmSatReportSubmission): AmSatReportSubmitResult
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/IMainContainer.kt

@@ -29,6 +29,7 @@ interface IMainContainer {
     val selectionRepo: ISelectionRepo
     val satelliteRepo: ISatelliteRepo
     val databaseRepo: IDatabaseRepo
+    val amSatRepo: IAmSatRepository
     val radioTrackingService: IRadioTrackingService
     fun provideAddToCalendar(): IAddToCalendar
     fun provideShowToast(): IShowToast

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/ISettingsRepo.kt

@@ -29,6 +29,7 @@ import kotlinx.coroutines.flow.StateFlow
 interface ISettingsRepo {
 
     val appVersionName: String
+    val appVersionCode: Long
 
     //region # Satellites selection settings
     val selectedIds: StateFlow<List<Int>>
@@ -71,8 +72,23 @@ interface ISettingsRepo {
     fun updateDataSourcesSettings(settings: DataSourcesSettings)
     //endregion
 
+    //region # Data sources status
+    val dataSourcesStatus: StateFlow<Map<String, Int>>
+    fun updateDataSourcesStatus(status: Map<String, Int>)
+    //endregion
+
     //region # Radio control settings
     val radioControlSettings: StateFlow<RadioControlSettings>
     fun updateRadioControlSettings(settings: RadioControlSettings)
     //endregion
+
+    //region # Per-satellite calculator offset settings
+    fun getSatelliteOffset(catnum: Int): String
+    fun setSatelliteOffset(catnum: Int, offset: String)
+    //endregion
+
+    //region # AMSAT status report settings
+    fun getAmSatCallsign(): String
+    fun setAmSatCallsign(callsign: String)
+    //endregion
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/source/ILocalSource.kt

@@ -26,11 +26,18 @@ interface ILocalSource {
     suspend fun getEntriesTotal(): Int
     suspend fun getEntriesList(): List<SatItem>
     suspend fun getEntriesWithIds(ids: List<Int>): List<OrbitalObject>
+    suspend fun getEntriesEpochs(): Map<Int, Double>
+    suspend fun getEntriesNames(): Map<Int, String>
+    suspend fun renameEntries(names: Map<Int, String>)
+    suspend fun deleteEntriesWithIds(ids: List<Int>)
     suspend fun insertEntries(entries: List<OrbitalData>)
     suspend fun deleteEntries()
     suspend fun getIdsWithModes(modes: List<String>): List<Int>
     suspend fun getRadiosTotal(): Int
     suspend fun getRadiosWithId(id: Int): List<SatRadio>
-    suspend fun insertRadios(radios: List<SatRadio>)
+    suspend fun insertRadios(radios: List<SatRadio>, isCustom: Boolean)
     suspend fun deleteRadios()
+
+    /** Drops the transceivers provided by the remote sources, keeping the imported ones. */
+    suspend fun deleteManagedRadios()
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/source/IRemoteSource.kt

@@ -19,7 +19,18 @@ package com.rtbishop.look4sat.core.domain.source
 
 import java.io.InputStream
 
+/** Result of a network download: the HTTP status code and the response body stream. */
+data class NetworkResult(val code: Int, val stream: InputStream?) {
+    companion object {
+        /** Code used when a request fails before any HTTP response is received. */
+        const val CONNECTION_ERROR = -1
+    }
+}
+
 interface IRemoteSource {
     suspend fun getFileStream(uri: String): InputStream?
-    suspend fun getNetworkStream(url: String): InputStream?
+    suspend fun getNetworkStream(url: String): NetworkResult
+    suspend fun getAmSatCatalog(): String?
+    suspend fun getAmSatReports(hours: Int, limit: Int): String?
+    suspend fun submitAmSatReport(payloadJson: String): Pair<Int, String>?
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/source/Sources.kt

@@ -18,18 +18,19 @@
 package com.rtbishop.look4sat.core.domain.source
 
 object Sources {
-    val satelliteDataUrls = mapOf(
-        "CelesTrak" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=active&FORMAT=csv",
-        "AMSAT" to "https://amsat.org/tle/current/nasabare.txt",
-        "McCants Classified" to "https://www.mmccants.org/tles/classfd.zip",
-        "McCants Integrated" to "https://www.mmccants.org/tles/inttles.zip",
-        "R4UAB" to "https://r4uab.ru/satonline.txt",
-        "SatNOGS" to "https://db.satnogs.org/api/tle/?format=3le",
-        "ARISS" to "https://live.ariss.org/iss.txt",
-        "Other" to "" // key for sats filter
+    // Ordered from the most specific to the most generic source: the first source that knows a
+    // satellite gets to name it, with the full catalog acting as the fallback.
+    val satelliteDataUrls = listOf(
+        "live.ariss.org/iss.txt",
+        "r4uab.ru/satonline.txt",
+        "mmccants.org/tles/classfd.zip",
+        "amsat.org/tle/current/nasabare.txt",
+        "celestrak.org/NORAD/elements/gp.php?GROUP=active&FORMAT=csv",
+        "db.satnogs.org/api/tle/?format=3le"
     )
-    val transceiversDataUrls = mapOf(
-        "SatNOGS" to "https://db.satnogs.org/api/transmitters/?format=json&status=active"
+    val transceiversDataUrls = listOf(
+        "r4uab.ru/transmitters.json",
+        "db.satnogs.org/api/transmitters/?format=json&status=active"
     )
     val satelliteModes = listOf(
         "4FSK", "64-QAM", "AFSK", "AFSK TUBiX10", "AHRPT", "AM", "APT", "ASK", "BPSK",

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/utility/DataParser.kt

@@ -33,10 +33,19 @@ class DataParser(private val dispatcher: CoroutineDispatcher) {
         ignoreUnknownKeys = true
         coerceInputValues = true
     }
+    private val alpha5Alphabet = "ABCDEFGHJKLMNPQRSTUVWXYZ"
+    private val celestrakCSVColumns = mapOf(
+        "OBJECT_NAME" to 0, "EPOCH" to 2, "MEAN_MOTION" to 3, "ECCENTRICITY" to 4,
+        "INCLINATION" to 5, "RA_OF_ASC_NODE" to 6, "ARG_OF_PERICENTER" to 7,
+        "MEAN_ANOMALY" to 8, "NORAD_CAT_ID" to 11, "BSTAR" to 14, "MEAN_MOTION_DOT" to 15
+    )
 
     suspend fun parseCSVStream(stream: InputStream): List<OrbitalData> = withContext(dispatcher) {
         stream.bufferedReader().useLines { lines ->
-            lines.drop(1).mapNotNull { parseCSV(it.split(",")) }.toList()
+            val iterator = lines.iterator()
+            if (!iterator.hasNext()) return@useLines emptyList()
+            val columns = parseCSVColumns(iterator.next())
+            iterator.asSequence().mapNotNull { line -> parseCSV(line.split(","), columns) }.toList()
         }
     }
 
@@ -58,35 +67,63 @@ class DataParser(private val dispatcher: CoroutineDispatcher) {
         }.getOrDefault(emptyList())
     }
 
-    private fun parseCSV(values: List<String>): OrbitalData? = runCatching {
-        val name = values[0]
-        val timestamp = values[2]
-        val year = timestamp.substring(0, 4)
-        val month = timestamp.substring(5, 7).toInt()
-        val dayOfMonth = timestamp.substring(8, 10).toInt()
-        val dayInt = getDayOfYear(year.toInt(), month, dayOfMonth)
-        val day = dayInt.toString().padStart(3, '0')
-        val hour = timestamp.substring(11, 13).toInt() * 3600000
-        val min = timestamp.substring(14, 16).toInt() * 60000
-        val sec = timestamp.substring(17, 19).toInt() * 1000
-        val ms = timestamp.substring(20, 26).toInt() / 1000.0
-        val frac = ((hour + min + sec + ms) / 86400000.0).toString().substring(1)
-        val epoch = "${year.substring(2)}$day$frac".toDouble()
+    private fun parseCSV(values: List<String>, columns: Map<String, Int>): OrbitalData? = runCatching {
+        fun value(column: String) = values[columns.getValue(column)].trim()
+        fun optionalValue(column: String) =
+            columns[column]?.let { index -> values.getOrNull(index) }?.trim()?.toDoubleOrNull() ?: 0.0
         OrbitalData(
-            name = name,
-            epoch = epoch,
-            meanmo = values[3].toDouble(),
-            eccn = values[4].toDouble(),
-            incl = values[5].toDouble(),
-            raan = values[6].toDouble(),
-            argper = values[7].toDouble(),
-            meanan = values[8].toDouble(),
-            catnum = values[11].toInt(),
-            bstar = values[14].toDouble(),
-            ndot = values[15].toDouble()
+            name = value("OBJECT_NAME"),
+            epoch = parseTimestamp(value("EPOCH")),
+            meanmo = value("MEAN_MOTION").toDouble(),
+            eccn = value("ECCENTRICITY").toDouble(),
+            incl = value("INCLINATION").toDouble(),
+            raan = value("RA_OF_ASC_NODE").toDouble(),
+            argper = value("ARG_OF_PERICENTER").toDouble(),
+            meanan = value("MEAN_ANOMALY").toDouble(),
+            catnum = parseCatnum(value("NORAD_CAT_ID")),
+            bstar = optionalValue("BSTAR"),
+            ndot = optionalValue("MEAN_MOTION_DOT")
         )
     }.onFailure { println("CSV parsing exception: $it") }.getOrNull()
 
+    /**
+     * OMM columns are located by name, as providers agree on the names but not on the order.
+     * Falls back to the Celestrak layout when the header is missing or unrecognized.
+     */
+    private fun parseCSVColumns(header: String): Map<String, Int> {
+        val columns = header.split(",").withIndex().associate { (index, name) ->
+            name.trim().trim('"').uppercase() to index
+        }
+        return if (columns.containsKey("NORAD_CAT_ID")) columns else celestrakCSVColumns
+    }
+
+    /**
+     * ISO 8601 timestamp as a TLE style YYDDD.ffffffff epoch. Fractional seconds are optional and
+     * a trailing timezone marker is ignored, as not every provider formats the epoch alike.
+     */
+    private fun parseTimestamp(timestamp: String): Double {
+        val year = timestamp.substring(0, 4).toInt()
+        val month = timestamp.substring(5, 7).toInt()
+        val dayOfMonth = timestamp.substring(8, 10).toInt()
+        val hours = timestamp.substring(11, 13).toInt()
+        val minutes = timestamp.substring(14, 16).toInt()
+        val seconds = timestamp.substring(17).takeWhile { it.isDigit() || it == '.' }.toDouble()
+        val dayFraction = (hours * 3600 + minutes * 60 + seconds) / 86400.0
+        return (year % 100) * 1000 + getDayOfYear(year, month, dayOfMonth) + dayFraction
+    }
+
+    /**
+     * Catalog numbers above 99999 do not fit the 5 digit TLE field, so they are encoded as Alpha-5:
+     * the leading two digits become a letter, with I and O skipped to avoid confusion with 1 and 0.
+     */
+    private fun parseCatnum(value: String): Int {
+        val catnum = value.trim()
+        if (catnum.first().isDigit()) return catnum.toInt()
+        val alphaIndex = alpha5Alphabet.indexOf(catnum.first().uppercaseChar())
+        require(alphaIndex >= 0) { "Unknown Alpha-5 catalog number: $catnum" }
+        return (alphaIndex + 10) * 10000 + catnum.drop(1).trim().toInt()
+    }
+
     private fun parseTLE(tle: List<String>): OrbitalData? = runCatching {
         val line1 = tle[1]
         val line2 = tle[2]
@@ -99,7 +136,7 @@ class DataParser(private val dispatcher: CoroutineDispatcher) {
             raan = line2.substring(17, 25).toDouble(),
             argper = line2.substring(34, 42).toDouble(),
             meanan = line2.substring(43, 51).toDouble(),
-            catnum = line1.substring(2, 7).trim().toInt(),
+            catnum = parseCatnum(line1.substring(2, 7)),
             bstar = 1e-5 * line1.substring(53, 59).toDouble() / 10.0.pow(line1.substring(60, 61).toDouble()),
             ndot = line1.substring(33, 43).trim().toDouble()
         )

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/utility/DopplerFrequencyCalculator.kt

@@ -112,11 +112,30 @@ object DopplerFrequencyCalculator {
         val modes = listOfNotNull(transponder.downlinkMode, transponder.uplinkMode)
             .joinToString(separator = " ")
             .lowercase(Locale.ENGLISH)
-        val hasLinearName = info.contains("linear")
+        val hasLinearName = info.contains("linear") || info.contains(" lin") || info.startsWith("lin")
         val hasTransponderName = info.contains("transponder") || info.contains("transp") ||
                 info.contains("xponder") || info.contains("xpdr")
         val hasLinearMode = listOf("ssb", "usb", "lsb", "cw").any { modes.contains(it) }
 
-        return (hasLinearName && hasTransponderName) || (hasTransponderName && hasLinearMode)
+        return (hasLinearName && hasTransponderName) || (hasTransponderName && hasLinearMode) ||
+                (hasLinearName && hasLinearMode)
+    }
+
+    /**
+     * Removes duplicate transponder entries that describe the same physical
+     * transponder with different mode labels (e.g. SatNOGS lists AO-7's Mode A
+     * as both "Lin SSB" and "Lin CW", and JO-97's U/V transponder as both
+     * "CW Transponder" and "SSB Transponder").
+     *
+     * Entries sharing the same uplink/downlink frequency range are considered
+     * the same transponder. The non-CW entry is preferred because its invert
+     * flag is more reliable (e.g. JO-97's CW entry wrongly has invert=false).
+     */
+    fun deduplicateTransponders(radios: List<SatRadio>): List<SatRadio> {
+        return radios.groupBy { radio ->
+            listOf(radio.uplinkLow, radio.uplinkHigh, radio.downlinkLow, radio.downlinkHigh)
+        }.values.map { group ->
+            group.firstOrNull { it.downlinkMode?.equals("CW", ignoreCase = true) != true } ?: group.first()
+        }
     }
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/utility/Extensions.kt

@@ -41,6 +41,21 @@ fun Double.round(decimals: Int): Double {
     return kotlin.math.round(this * multiplier) / multiplier
 }
 
+fun String.aprsPasscode(): Int {
+    val callsign = this.trim().uppercase().substringBefore('-') // commonly strip SSID
+    var hash = 0x73E2
+    var i = 0
+    while (i < callsign.length) {
+        hash = hash xor (callsign[i].code shl 8)
+        i++
+        if (i < callsign.length) {
+            hash = hash xor callsign[i].code
+            i++
+        }
+    }
+    return hash and 0x7FFF
+}
+
 //fun String.getHash(type: String = "SHA-256"): String {
 //    val hexChars = "0123456789ABCDEF"
 //    val bytes = MessageDigest.getInstance(type).digest(this.toByteArray())

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/DataParserTest.kt

@@ -18,10 +18,12 @@
 package com.rtbishop.look4sat.core.domain
 
 import com.rtbishop.look4sat.core.domain.utility.DataParser
+import com.rtbishop.look4sat.core.domain.utility.aprsPasscode
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.StandardTestDispatcher
 import kotlinx.coroutines.test.runTest
 import org.junit.Test
+import kotlin.math.abs
 
 @ExperimentalCoroutinesApi
 class DataParserTest {
@@ -60,8 +62,49 @@ class DataParserTest {
     fun `Given valid CSV stream returns valid data`() = runTest(testDispatcher) {
         val parsedList = dataParser.parseCSVStream(validCSVStream)
         assert(parsedList.size == 2)
-        assert(parsedList[0].epoch == 21320.51955234)
-        assert(parsedList[1].epoch == 24069.23963816)
+        assert(abs(parsedList[0].epoch - 21320.51955234) < 1e-8)
+        assert(abs(parsedList[1].epoch - 24069.23963816) < 1e-8)
+    }
+
+    @Test
+    fun `Given CSV stream with reordered columns returns valid data`() = runTest(testDispatcher) {
+        val csvStream = """
+            NORAD_CAT_ID,EPOCH,OBJECT_NAME,BSTAR,MEAN_MOTION_DOT,MEAN_MOTION,ECCENTRICITY,INCLINATION,RA_OF_ASC_NODE,ARG_OF_PERICENTER,MEAN_ANOMALY
+            25544,2021-11-16T12:28:09.322176,ISS (ZARYA),.31985E-4,.1288E-4,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876
+        """.trimIndent().byteInputStream()
+        val sat = dataParser.parseCSVStream(csvStream)[0]
+        assert(sat.name == "ISS (ZARYA)")
+        assert(sat.catnum == 25544)
+        assert(sat.meanmo == 15.48582035)
+        assert(sat.bstar == 0.31985E-4)
+        assert(abs(sat.epoch - 21320.51955234) < 1e-8)
+    }
+
+    @Test
+    fun `Given CSV epoch without fractional seconds returns valid data`() = runTest(testDispatcher) {
+        val csvStream = """
+            OBJECT_NAME,OBJECT_ID,EPOCH,MEAN_MOTION,ECCENTRICITY,INCLINATION,RA_OF_ASC_NODE,ARG_OF_PERICENTER,MEAN_ANOMALY,EPHEMERIS_TYPE,CLASSIFICATION_TYPE,NORAD_CAT_ID,ELEMENT_SET_NO,REV_AT_EPOCH,BSTAR,MEAN_MOTION_DOT,MEAN_MOTION_DDOT
+            ISS (ZARYA),1998-067A,2021-11-16T12:28:09Z,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876,0,U,25544,999,31220,.31985E-4,.1288E-4,0
+            ISS (ZARYA),1998-067A,2021-11-16T00:00:30,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876,0,U,25544,999,31220,.31985E-4,.1288E-4,0
+        """.trimIndent().byteInputStream()
+        val parsedList = dataParser.parseCSVStream(csvStream)
+        assert(parsedList.size == 2)
+        // the dropped microseconds are worth a few microdays, the rest of the epoch is intact
+        assert(abs(parsedList[0].epoch - 21320.51955234) < 1e-5)
+        // just past midnight: the old formatter produced a broken 21320.0E-4 style epoch here
+        assert(abs(parsedList[1].epoch - 21320.00034722) < 1e-8)
+    }
+
+    @Test
+    fun `Given TLE stream with alpha-5 catalog number returns valid data`() = runTest(testDispatcher) {
+        val tleStream = """
+            NAVSTAR 43
+            1 T0111U 98067A   21320.51955234  .00001288  00000+0  31985-4 0  9990
+            2 T0111  51.6447 309.4881 0004694 203.6966 299.8876 15.48582035312205
+        """.trimIndent().byteInputStream()
+        val sat = dataParser.parseTLEStream(tleStream)[0]
+        // A stands for 10 and I and O are skipped, so T is 27 and T0111 stands for 270111
+        assert(sat.catnum == 270111)
     }
 
     @Test
@@ -239,4 +282,10 @@ class DataParserTest {
         // Matches the CSV test data epoch: 2021-11-16 → day 320
         assert(dataParser.getDayOfYear(2021, 11, 16) == 320)
     }
+
+    @Test
+    fun `check APRS passcode calculation`() {
+        assert("M7LNB".aprsPasscode() == 12443)
+        assert("N0CALL".aprsPasscode() == 13023)
+    }
 }

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/DopplerFrequencyCalculatorTest.kt

@@ -13,6 +13,7 @@ import org.junit.Test
 class DopplerFrequencyCalculatorTest {
 
     private fun linearTransponder(
+        uuid: String = "linear",
         upLow: Long = 145_000_000L,
         upHigh: Long = 145_500_000L,
         downLow: Long = 435_000_000L,
@@ -22,7 +23,7 @@ class DopplerFrequencyCalculatorTest {
         downlinkMode: String? = "USB",
         uplinkMode: String? = "LSB"
     ) = SatRadio(
-        uuid = "linear", info = info, isAlive = true,
+        uuid = uuid, info = info, isAlive = true,
         downlinkLow = downLow, downlinkHigh = downHigh,
         downlinkMode = downlinkMode, uplinkLow = upLow, uplinkHigh = upHigh,
         uplinkMode = uplinkMode, isInverted = inverted, catnum = 12345
@@ -72,11 +73,93 @@ class DopplerFrequencyCalculatorTest {
         assertFalse(DopplerFrequencyCalculator.isNamedLinearTransponder(driftingRangeEntry))
     }
 
+    @Test
+    fun isNamedLinearTransponder_returnsTrueForAbbreviatedLinName() {
+        // AO-7 style: "Mode V/A (A) Lin SSB" — "Lin" abbreviation, no "transponder" word
+        val ao7Entry = linearTransponder(info = "Mode V/A (A) Lin SSB", downlinkMode = "USB", uplinkMode = "USB")
+        assertTrue(DopplerFrequencyCalculator.isNamedLinearTransponder(ao7Entry))
+        val ao7CwEntry = linearTransponder(info = "Mode V/A (A) Lin CW", downlinkMode = "CW", uplinkMode = "CW")
+        assertTrue(DopplerFrequencyCalculator.isNamedLinearTransponder(ao7CwEntry))
+        val ao7ModeBEntry = linearTransponder(info = "Mode U/V (B) Lin", downlinkMode = "USB", uplinkMode = "LSB")
+        assertTrue(DopplerFrequencyCalculator.isNamedLinearTransponder(ao7ModeBEntry))
+    }
+
+    @Test
+    fun isNamedLinearTransponder_returnsTrueForLinearWithoutTransponderWord() {
+        // AO-73 style: "Mode U/V Linear" — has "Linear" but no "transponder"
+        val ao73Entry = linearTransponder(info = "Mode U/V Linear", downlinkMode = "USB", uplinkMode = "LSB")
+        assertTrue(DopplerFrequencyCalculator.isNamedLinearTransponder(ao73Entry))
+    }
+
+    @Test
+    fun isNamedLinearTransponder_returnsFalseForDownlinkContainingLinInsideWord() {
+        // "Downlink" contains "lin" but is not a linear-transponder name
+        val downlinkEntry = linearTransponder(info = "Mode U Downlink", downlinkMode = "FM", uplinkMode = "FM")
+        assertFalse(DopplerFrequencyCalculator.isNamedLinearTransponder(downlinkEntry))
+    }
+
     @Test
     fun isNamedLinearTransponder_returnsFalseForFmRepeater() {
         assertFalse(DopplerFrequencyCalculator.isNamedLinearTransponder(fmTransponder()))
     }
 
+    @Test
+    fun deduplicateTransponders_mergesSameFrequencyRange() {
+        // AO-7's Mode A: same range, SSB and CW entries
+        val ssb = linearTransponder(
+            uuid = "ssb-uuid", info = "Mode V/A (A) Lin SSB",
+            downlinkMode = "USB", uplinkMode = "USB"
+        )
+        val cw = linearTransponder(
+            uuid = "cw-uuid", info = "Mode V/A (A) Lin CW",
+            downlinkMode = "CW", uplinkMode = "CW"
+        )
+        val modeB = linearTransponder(
+            uuid = "modeb-uuid", info = "Mode U/V (B) Lin",
+            upLow = 432_125_000L, upHigh = 432_175_000L,
+            downLow = 145_925_000L, downHigh = 145_975_000L,
+            downlinkMode = "USB", uplinkMode = "LSB"
+        )
+        val result = DopplerFrequencyCalculator.deduplicateTransponders(listOf(ssb, cw, modeB))
+        assertEquals(2, result.size)
+        // SSB entry should be preferred over CW (same range)
+        assertEquals("ssb-uuid", result[0].uuid)
+        assertEquals("modeb-uuid", result[1].uuid)
+    }
+
+    @Test
+    fun deduplicateTransponders_prefersNonCwEntry() {
+        // JO-97: CW entry has invert=false (wrong), SSB has invert=true (correct)
+        val cw = linearTransponder(
+            uuid = "cw-uuid", info = "U/V CW Transponder",
+            downlinkMode = "CW", uplinkMode = "CW",
+            upLow = 435_100_000L, upHigh = 435_120_000L,
+            downLow = 145_855_000L, downHigh = 145_875_000L
+        )
+        val ssb = linearTransponder(
+            uuid = "ssb-uuid", info = "U/V SSB Transponder",
+            downlinkMode = "USB", uplinkMode = "LSB",
+            upLow = 435_100_000L, upHigh = 435_120_000L,
+            downLow = 145_855_000L, downHigh = 145_875_000L,
+            inverted = true
+        )
+        val result = DopplerFrequencyCalculator.deduplicateTransponders(listOf(cw, ssb))
+        assertEquals(1, result.size)
+        assertEquals("ssb-uuid", result[0].uuid)
+        // Verify the correct invert flag is preserved
+        assertTrue(result[0].isInverted)
+    }
+
+    @Test
+    fun deduplicateTransponders_preservesUniqueEntries() {
+        val t1 = linearTransponder(uuid = "t1", upLow = 145_000_000L, upHigh = 145_500_000L,
+            downLow = 435_000_000L, downHigh = 435_500_000L)
+        val t2 = linearTransponder(uuid = "t2", upLow = 435_000_000L, upHigh = 435_500_000L,
+            downLow = 145_000_000L, downHigh = 145_500_000L)
+        val result = DopplerFrequencyCalculator.deduplicateTransponders(listOf(t1, t2))
+        assertEquals(2, result.size)
+    }
+
     @Test
     fun computeUplinkFromDownlink_linear_noDoppler() {
         val xpdr = linearTransponder()

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/predict/CelestialComputerTest.kt

@@ -0,0 +1,79 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.predict
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import java.time.Instant
+import kotlin.math.abs
+
+class CelestialComputerTest {
+
+    private data class RiseSetCase(
+        val name: String,
+        val observer: GeoPos,
+        val startIso: String
+    )
+
+    @Test
+    fun `findSunRiseSet returns distinct sunrise and sunset for representative locations`() {
+        val cases = listOf(
+            RiseSetCase("Equator at March equinox", GeoPos(0.0, 0.0), "2026-03-20T00:00:00Z"),
+            RiseSetCase("Equator at September equinox", GeoPos(0.0, 0.0), "2026-09-23T00:00:00Z"),
+            RiseSetCase("Sydney winter", GeoPos(-33.8688, 151.2093), "2026-06-21T00:00:00Z"),
+            RiseSetCase("Buenos Aires winter", GeoPos(-34.6037, -58.3816), "2026-06-21T00:00:00Z"),
+            RiseSetCase("Cape Town winter", GeoPos(-33.9249, 18.4241), "2026-06-21T00:00:00Z"),
+            RiseSetCase("London summer", GeoPos(51.5074, -0.1278), "2026-06-21T00:00:00Z")
+        )
+
+        cases.forEach { testCase ->
+            val result = CelestialComputer.findSunRiseSet(testCase.observer, testCase.startIso.toMillis())
+            val daylightDuration = result.setTimeMillis - result.riseTimeMillis
+
+            assertTrue("${testCase.name}: sunrise should be non-zero", result.riseTimeMillis > 0L)
+            assertTrue("${testCase.name}: sunset should be non-zero", result.setTimeMillis > 0L)
+            assertTrue("${testCase.name}: sunset should be after sunrise", result.setTimeMillis > result.riseTimeMillis)
+            assertTrue("${testCase.name}: daylight duration should be longer than 1 hour", daylightDuration > HOUR_MILLIS)
+            assertTrue("${testCase.name}: daylight duration should be shorter than 24 hours", daylightDuration < DAY_MILLIS)
+
+            val riseElevation = CelestialComputer.getSunPosition(testCase.observer, result.riseTimeMillis).elevation
+            val setElevation = CelestialComputer.getSunPosition(testCase.observer, result.setTimeMillis).elevation
+            assertEquals("${testCase.name}: sunrise should converge near the standard threshold", SUNRISE_SET_THRESHOLD, riseElevation, 0.02)
+            assertEquals("${testCase.name}: sunset should converge near the standard threshold", SUNRISE_SET_THRESHOLD, setElevation, 0.02)
+        }
+    }
+
+    @Test
+    fun `findSunRiseSet does not return the same instant for equinox regression cases`() {
+        listOf("2026-03-20T00:00:00Z", "2026-09-23T00:00:00Z").forEach { startIso ->
+            val result = CelestialComputer.findSunRiseSet(GeoPos(0.0, 0.0), startIso.toMillis())
+            val separationMillis = abs(result.setTimeMillis - result.riseTimeMillis)
+
+            assertTrue("$startIso: sunrise and sunset should be separated", separationMillis > HOUR_MILLIS)
+        }
+    }
+
+    private fun String.toMillis(): Long = Instant.parse(this).toEpochMilli()
+
+    private companion object {
+        private const val SUNRISE_SET_THRESHOLD = -0.8333
+        private const val HOUR_MILLIS = 60L * 60L * 1000L
+        private const val DAY_MILLIS = 24L * HOUR_MILLIS
+    }
+}

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/Components.kt

@@ -27,11 +27,15 @@ import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.RowScope
 import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.layout.asPaddingValues
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.statusBars
 import androidx.compose.foundation.layout.statusBarsPadding
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.shape.RoundedCornerShape
@@ -47,9 +51,8 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.ModalBottomSheet
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
-import androidx.compose.material3.SheetValue
 import androidx.compose.material3.rememberModalBottomSheetState
-import androidx.compose.material3.adaptive.currentWindowAdaptiveInfo
+import androidx.compose.material3.adaptive.currentWindowAdaptiveInfoV2
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.compositionLocalOf
 import androidx.compose.runtime.remember
@@ -73,6 +76,8 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextDecoration
 import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.platform.LocalWindowInfo
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.TextUnit
@@ -234,8 +239,13 @@ fun CardButton(onClick: () -> Unit, text: String, modifier: Modifier = Modifier)
 }
 
 @Composable
-fun IconCard(action: () -> Unit, resId: Int, modifier: Modifier = Modifier, enabled: Boolean = true) {
-    ElevatedCard(modifier = Modifier.size(48.dp), enabled = enabled, onClick = action) {
+fun IconCard(
+    action: () -> Unit, resId: Int, modifier: Modifier = Modifier,
+    enabled: Boolean = true, containerColor: Color = Color.Unspecified
+) {
+    val colors = if (containerColor == Color.Unspecified) CardDefaults.elevatedCardColors()
+    else CardDefaults.elevatedCardColors(containerColor = containerColor)
+    ElevatedCard(modifier = Modifier.size(48.dp), enabled = enabled, onClick = action, colors = colors) {
         Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
             Icon(painter = painterResource(resId), contentDescription = null, modifier = modifier)
         }
@@ -291,52 +301,86 @@ fun getDefaultPass(): OrbitalPass = OrbitalPass(
 )
 
 @Composable
-fun SharedDialog(
-    title: String, onCancel: () -> Unit, onAccept: () -> Unit, content: @Composable () -> Unit
-) {
-    SharedDialog(title = title, onDismissRequest = onCancel, onCancel = onCancel, onAccept = onAccept) { _ ->
-        content()
-    }
-}
-
-@Composable
-fun SharedDialog(
+fun InfoDialog(
     title: String,
-    onDismissRequest: () -> Unit,
-    onCancel: (() -> Unit)? = null,
-    onAccept: (() -> Unit)? = null,
-    titleFontSize: Int = 16,
-    titleTextAlign: TextAlign = if (onCancel != null && onAccept != null) TextAlign.Center else TextAlign.Start,
-    content: @Composable (padding: Dp) -> Unit
+    onDismiss: () -> Unit,
+    onAccept: () -> Unit,
+    extraAction: (@Composable () -> Unit)? = null,
+    content: @Composable () -> Unit
 ) {
-    val dismissible = onCancel != null
-    DialogShell(onDismissRequest = onDismissRequest, dismissible = dismissible) { padding ->
+    DialogShell(onDismissRequest = onDismiss) { padding ->
         Row(
             verticalAlignment = Alignment.CenterVertically,
             modifier = Modifier
                 .fillMaxWidth()
                 .padding(start = padding, top = padding, end = padding)
         ) {
-            if (onCancel != null) {
-                CardButton(onClick = onCancel, text = stringResource(R.string.btn_cancel))
-            }
             Text(
                 text = title,
-                fontSize = titleFontSize.sp,
+                fontSize = 16.sp,
                 fontWeight = FontWeight.Medium,
                 color = MaterialTheme.colorScheme.primary,
-                textAlign = titleTextAlign,
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis,
+                modifier = Modifier.weight(1f)
+            )
+            extraAction?.let {
+                it()
+                Spacer(modifier = Modifier.width(8.dp))
+            }
+            CardButton(onClick = onAccept, text = stringResource(R.string.btn_accept))
+        }
+        content()
+    }
+}
+
+@Composable
+fun ConfirmDialog(
+    title: String,
+    onCancel: () -> Unit,
+    onAccept: () -> Unit,
+    content: @Composable () -> Unit
+) {
+    DialogShell(onDismissRequest = onCancel) { padding ->
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(start = padding, top = padding, end = padding)
+        ) {
+            CardButton(onClick = onCancel, text = stringResource(R.string.btn_cancel))
+            Text(
+                text = title,
+                fontSize = 16.sp,
+                fontWeight = FontWeight.Medium,
+                color = MaterialTheme.colorScheme.primary,
+                textAlign = TextAlign.Center,
                 maxLines = 1,
                 overflow = TextOverflow.Ellipsis,
                 modifier = Modifier
                     .weight(1f)
-                    .padding(horizontal = if (onCancel != null && onAccept != null) padding else 0.dp)
+                    .padding(horizontal = padding)
             )
-            if (onAccept != null) {
-                CardButton(onClick = onAccept, text = stringResource(R.string.btn_accept))
-            }
+            CardButton(onClick = onAccept, text = stringResource(R.string.btn_accept))
         }
-        content(padding)
+        content()
+    }
+}
+
+@Composable
+fun WhatsNewDialog(onDismiss: () -> Unit) {
+    InfoDialog(
+        title = stringResource(R.string.pass_whatsnew_title),
+        onDismiss = onDismiss,
+        onAccept = onDismiss
+    ) {
+        Text(
+            text = stringResource(R.string.pass_whatsnew_message),
+            fontSize = 16.sp,
+            color = MaterialTheme.colorScheme.onSurface,
+            modifier = Modifier.padding(horizontal = LocalSpacing.current.large)
+        )
+        Spacer(modifier = Modifier.height(0.dp))
     }
 }
 
@@ -344,14 +388,13 @@ fun SharedDialog(
 @Composable
 private fun DialogShell(
     onDismissRequest: () -> Unit,
-    dismissible: Boolean = true,
     content: @Composable (padding: Dp) -> Unit
 ) {
     val padding = LocalSpacing.current.large
-    val sheetState = rememberModalBottomSheetState(
-        skipPartiallyExpanded = true,
-        confirmValueChange = { if (dismissible) true else it != SheetValue.Hidden }
-    )
+    val sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+    val statusBarHeight = WindowInsets.statusBars.asPaddingValues().calculateTopPadding()
+    val containerHeight = with(LocalDensity.current) { LocalWindowInfo.current.containerSize.height.toDp() }
+    val maxSheetHeight = containerHeight - statusBarHeight
     val stopSheetFling = remember {
         object : NestedScrollConnection {
             override suspend fun onPostFling(consumed: Velocity, available: Velocity): Velocity {
@@ -366,10 +409,10 @@ private fun DialogShell(
         }
     }
     ModalBottomSheet(
-        onDismissRequest = if (dismissible) onDismissRequest else { {} },
+        onDismissRequest = onDismissRequest,
         sheetState = sheetState,
         dragHandle = null,
-        shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
+        shape = RoundedCornerShape(topStart = 12.dp, topEnd = 12.dp),
         scrimColor = Color.Black.copy(alpha = 0.64f)
     ) {
         Column(
@@ -377,6 +420,7 @@ private fun DialogShell(
             verticalArrangement = Arrangement.spacedBy(padding),
             modifier = Modifier
                 .fillMaxWidth()
+                .heightIn(max = maxSheetHeight)
                 .nestedScroll(stopSheetFling)
         ) {
             content(padding)
@@ -386,11 +430,11 @@ private fun DialogShell(
 
 @Composable
 fun hasEnoughHeight(): Boolean =
-    currentWindowAdaptiveInfo().windowSizeClass.isHeightAtLeastBreakpoint(480)
+    currentWindowAdaptiveInfoV2().windowSizeClass.isHeightAtLeastBreakpoint(480)
 
 @Composable
 fun hasEnoughWidth(): Boolean =
-    currentWindowAdaptiveInfo().windowSizeClass.isWidthAtLeastBreakpoint(600)
+    currentWindowAdaptiveInfoV2().windowSizeClass.isWidthAtLeastBreakpoint(600)
 
 @Composable
 fun isVerticalLayout(): Boolean = !hasEnoughWidth()

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/DragDropSwipe.kt

@@ -0,0 +1,272 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.rtbishop.look4sat.core.presentation
+
+import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.animation.core.Animatable
+import androidx.compose.animation.core.Spring
+import androidx.compose.animation.core.animateDpAsState
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.animation.core.spring
+import androidx.compose.animation.fadeOut
+import androidx.compose.foundation.border
+import androidx.compose.foundation.gestures.detectDragGesturesAfterLongPress
+import androidx.compose.foundation.gestures.scrollBy
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.ColumnScope
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyItemScope
+import androidx.compose.foundation.lazy.LazyListItemInfo
+import androidx.compose.foundation.lazy.LazyListState
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.SwipeToDismissBox
+import androidx.compose.material3.SwipeToDismissBoxValue
+import androidx.compose.material3.rememberSwipeToDismissBoxState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableFloatStateOf
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.dropShadow
+import androidx.compose.ui.draw.innerShadow
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.hapticfeedback.HapticFeedbackType
+import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.platform.LocalHapticFeedback
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.zIndex
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import kotlin.time.Duration.Companion.milliseconds
+
+//region DragDrop Region
+@Composable
+fun rememberDragDropState(lazyListState: LazyListState, onMove: (Int, Int) -> Unit): DragDropState {
+    val scope = rememberCoroutineScope()
+    val state = remember(lazyListState) {
+        DragDropState(state = lazyListState, onMove = onMove, scope = scope)
+    }
+    LaunchedEffect(state) {
+        while (true) {
+            val diff = state.scrollChannel.receive()
+            lazyListState.scrollBy(diff)
+        }
+    }
+    return state
+}
+
+class DragDropState internal constructor(
+    private val state: LazyListState,
+    private val scope: CoroutineScope,
+    private val onMove: (Int, Int) -> Unit
+) {
+    var draggingItemIndex by mutableStateOf<Int?>(null)
+        private set
+
+    internal val scrollChannel = Channel<Float>()
+
+    private var draggingItemDraggedDelta by mutableFloatStateOf(0f)
+    private var draggingItemInitialOffset by mutableIntStateOf(0)
+    internal val draggingItemOffset: Float
+        get() = draggingItemLayoutInfo?.let { item ->
+            draggingItemInitialOffset + draggingItemDraggedDelta - item.offset
+        } ?: 0f
+
+    private val draggingItemLayoutInfo: LazyListItemInfo?
+        get() = state.layoutInfo.visibleItemsInfo.firstOrNull { it.index == draggingItemIndex }
+
+    internal var previousIndexOfDraggedItem by mutableStateOf<Int?>(null)
+        private set
+    internal var previousItemOffset = Animatable(0f)
+        private set
+
+    internal fun onDragStart(offset: Offset) {
+        state.layoutInfo.visibleItemsInfo.firstOrNull { item ->
+            offset.y.toInt() in item.offset..(item.offset + item.size)
+        }?.also {
+            draggingItemIndex = it.index
+            draggingItemInitialOffset = it.offset
+        }
+    }
+
+    internal fun onDragInterrupted() {
+        if (draggingItemIndex != null) {
+            previousIndexOfDraggedItem = draggingItemIndex
+            val startOffset = draggingItemOffset
+            scope.launch {
+                previousItemOffset.snapTo(startOffset)
+                previousItemOffset.animateTo(
+                    0f, spring(stiffness = Spring.StiffnessMediumLow, visibilityThreshold = 1f)
+                )
+                previousIndexOfDraggedItem = null
+            }
+        }
+        draggingItemDraggedDelta = 0f
+        draggingItemIndex = null
+        draggingItemInitialOffset = 0
+    }
+
+    internal fun onDrag(offset: Offset) {
+        draggingItemDraggedDelta += offset.y
+
+        val draggingItem = draggingItemLayoutInfo ?: return
+        val startOffset = draggingItem.offset + draggingItemOffset
+        val endOffset = startOffset + draggingItem.size
+        val middleOffset = startOffset + (endOffset - startOffset) / 2f
+
+        val targetItem = state.layoutInfo.visibleItemsInfo.find { item ->
+            middleOffset.toInt() in item.offset..item.offsetEnd && draggingItem.index != item.index
+        }
+        if (targetItem != null) {
+            if (draggingItem.index == state.firstVisibleItemIndex || targetItem.index == state.firstVisibleItemIndex) {
+                state.requestScrollToItem(state.firstVisibleItemIndex, state.firstVisibleItemScrollOffset)
+            }
+            onMove.invoke(draggingItem.index, targetItem.index)
+            draggingItemIndex = targetItem.index
+        } else {
+            val overscroll = when {
+                draggingItemDraggedDelta > 0 -> (endOffset - state.layoutInfo.viewportEndOffset).coerceAtLeast(0f)
+                draggingItemDraggedDelta < 0 -> (startOffset - state.layoutInfo.viewportStartOffset).coerceAtMost(0f)
+                else -> 0f
+            }
+            if (overscroll != 0f) {
+                scrollChannel.trySend(overscroll)
+            }
+        }
+    }
+
+    private val LazyListItemInfo.offsetEnd: Int
+        get() = this.offset + this.size
+}
+
+fun Modifier.dragContainer(dragDropState: DragDropState): Modifier {
+    return pointerInput(dragDropState) {
+        detectDragGesturesAfterLongPress(
+            onDrag = { change, offset ->
+                change.consume()
+                dragDropState.onDrag(offset = offset)
+            },
+            onDragStart = { offset -> dragDropState.onDragStart(offset) },
+            onDragEnd = { dragDropState.onDragInterrupted() },
+            onDragCancel = { dragDropState.onDragInterrupted() }
+        )
+    }
+}
+
+@Composable
+fun LazyItemScope.DraggableItem(
+    dragDropState: DragDropState,
+    index: Int,
+    modifier: Modifier = Modifier,
+    content: @Composable ColumnScope.(isDragging: Boolean) -> Unit
+) {
+    val zIndexMod = Modifier.zIndex(1f)
+    val dragging = index == dragDropState.draggingItemIndex
+    val draggingModifier = when {
+        dragging -> zIndexMod.graphicsLayer { translationY = dragDropState.draggingItemOffset }
+        index == dragDropState.previousIndexOfDraggedItem -> {
+            zIndexMod.graphicsLayer { translationY = dragDropState.previousItemOffset.value }
+        }
+        else -> Modifier.animateItem(fadeInSpec = null, fadeOutSpec = null)
+    }
+    Column(modifier = modifier.then(draggingModifier)) { content(dragging) }
+}
+//endregion
+
+//region Swipe Region
+@Composable
+fun SwipeableItem(onRemove: () -> Unit, content: @Composable () -> Unit) {
+    val coroutineScope = rememberCoroutineScope()
+    val dismissThresholdPx = with(LocalDensity.current) { 120.dp.toPx() }
+    val dismissState = rememberSwipeToDismissBoxState { dismissThresholdPx }
+    val isVisible = remember { mutableStateOf(true) }
+    val willTrigger by remember { derivedStateOf { dismissState.targetValue != SwipeToDismissBoxValue.Settled } }
+    val hapticFeedback = LocalHapticFeedback.current
+    LaunchedEffect(willTrigger) {
+        val feedbackType = if (willTrigger) HapticFeedbackType.LongPress else HapticFeedbackType.SegmentTick
+        hapticFeedback.performHapticFeedback(feedbackType)
+    }
+    AnimatedVisibility(visible = isVisible.value, exit = fadeOut(spring())) {
+        SwipeToDismissBox(
+            state = dismissState,
+            enableDismissFromStartToEnd = true,
+            enableDismissFromEndToStart = false,
+            backgroundContent = { DismissBackground(willTrigger) },
+            content = { content() },
+            onDismiss = {
+                isVisible.value = false
+                coroutineScope.launch { dismissState.reset() }
+            }
+        )
+    }
+    LaunchedEffect(isVisible.value) {
+        if (!isVisible.value) { delay(250.milliseconds).also { onRemove() } }
+    }
+}
+
+@Composable
+fun DismissBackground(willTrigger: Boolean, bgColor: Color = Color(0xFFFF3C3A)) {
+    val iconScale by animateFloatAsState(targetValue = if (willTrigger) 1f else .8f)
+    val slide by animateDpAsState(targetValue = if (willTrigger) 32.dp else (12).dp)
+    Box(
+        contentAlignment = Alignment.CenterStart,
+        modifier = Modifier
+            .fillMaxSize()
+            .border(width = 2.dp, shape = MaterialTheme.shapes.extraLarge, color = bgColor)
+            .dropShadow(shape = MaterialTheme.shapes.extraLarge) {
+                color = bgColor
+                radius = 40f
+                alpha = if (willTrigger) .2f else 0f
+            }
+            .innerShadow(shape = MaterialTheme.shapes.extraLarge) {
+                color = bgColor
+                radius = 40f
+                alpha = if (willTrigger) 1f else .2f
+            }
+    ) {
+        Icon(
+            painter = painterResource(R.drawable.ic_delete),
+            contentDescription = null,
+            modifier = Modifier
+                .size(32.dp)
+                .fillMaxHeight()
+                .graphicsLayer {
+                    scaleX = iconScale
+                    scaleY = iconScale
+                    translationX = slide.toPx()
+                }
+        )
+    }
+}
+//endregion

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/DragReorder.kt

@@ -0,0 +1,311 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.presentation
+
+import androidx.compose.animation.core.Animatable
+import androidx.compose.animation.core.FastOutSlowInEasing
+import androidx.compose.animation.core.Spring
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.animation.core.spring
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.background
+import androidx.compose.foundation.gestures.detectDragGesturesAfterLongPress
+import androidx.compose.foundation.gestures.scrollBy
+import androidx.compose.foundation.lazy.LazyListState
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.MutableFloatState
+import androidx.compose.runtime.Stable
+import androidx.compose.runtime.State
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableFloatStateOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.rememberUpdatedState
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.shadow
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.zIndex
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import kotlin.time.Duration.Companion.milliseconds
+
+/**
+ * Long-press drag-to-reorder for rows inside a `LazyColumn`, with built-in edge auto-scroll and
+ * a settle-back animation when the finger is released.
+ *
+ * Reordering only ever swaps an item with its neighbor *inside the `items` list* passed to
+ * [rememberDragRowState] — so multiple independent groups of rows (e.g. two sections separated
+ * by header items) can share one [DragReorderState]/`LazyColumn` simply by giving each section
+ * its own backing list and calling [rememberDragRowState] with that section's list. Keys must be
+ * globally unique across the whole `LazyColumn` and match exactly what is passed as the
+ * `key = { ... }` lambda of `items`/`itemsIndexed`.
+ *
+ * Usage:
+ * ```
+ * val dragState = rememberDragReorderState(listState)
+ * itemsIndexed(entries, key = { _, e -> e.id }) { index, entry ->
+ *     val row = rememberDragRowState(dragState, entries, entry, key = { it.id }) { from, to ->
+ *         entries.add(to, entries.removeAt(from))
+ *     }
+ *     Row(
+ *         modifier = Modifier
+ *             .dragLift(row.isLifted, row.translationY)
+ *             .animateItem(placementSpec = if (row.isDragging) tween(0) else spring())
+ *     ) {
+ *         Icon(modifier = Modifier.dragHandle(row), painter = ..., contentDescription = null)
+ *         Text(entry.label)
+ *     }
+ * }
+ * ```
+ */
+@Stable
+class DragReorderState internal constructor(internal val listState: LazyListState) {
+    internal var draggedKey by mutableStateOf<Any?>(null)
+}
+
+@Composable
+fun rememberDragReorderState(listState: LazyListState): DragReorderState =
+    remember(listState) { DragReorderState(listState) }
+
+/** Used for the settle-back animation once the finger is released: quick and snappy. */
+private val reorderSettleSpec = tween<Float>(durationMillis = 150, easing = FastOutSlowInEasing)
+
+/**
+ * Per-row drag bookkeeping, obtained via [rememberDragRowState].
+ *
+ * [dragStartOffset] is this row's viewport offset captured once at drag start, [fingerOffset] is
+ * the raw accumulated finger travel (used for edge auto-scroll and swap detection). [translationY]
+ * is derived every frame from those two plus the row's *current* live layout offset, so it
+ * automatically stays correct across neighbor swaps and list auto-scroll without any manual
+ * offset-compensation math.
+ */
+@Stable
+class DragRowState<T> internal constructor(
+    private val dragState: DragReorderState,
+    private val itemsState: State<List<T>>,
+    private val itemKey: Any,
+    private val key: (T) -> Any,
+    private val onMoveState: State<(Int, Int) -> Unit>,
+    private val scope: CoroutineScope
+) {
+    internal val fingerOffset: MutableFloatState = mutableFloatStateOf(0f)
+    internal val dragStartOffset: MutableFloatState = mutableFloatStateOf(0f)
+    internal val startCenterY: MutableFloatState = mutableFloatStateOf(0f)
+    internal val settleAnim = Animatable(0f)
+
+    var isSettling: Boolean by mutableStateOf(false)
+        private set
+
+    val isDragging: Boolean get() = dragState.draggedKey == itemKey
+    val isLifted: Boolean get() = isDragging || isSettling
+
+    val translationY: Float
+        get() = when {
+            isSettling -> settleAnim.value
+            isDragging -> currentTranslation()
+            else -> 0f
+        }
+
+    /**
+     * How far this row must be pushed away from its *current* layout slot so it stays glued to
+     * the finger. Because [dragStartOffset] is fixed at drag start while the row's live layout
+     * offset moves as neighbors swap places or the list auto-scrolls, this difference naturally
+     * absorbs both effects with no extra bookkeeping.
+     */
+    private fun currentTranslation(): Float {
+        val liveOffset = dragState.listState.layoutInfo.visibleItemsInfo
+            .firstOrNull { it.key == itemKey }?.offset?.toFloat()
+            ?: dragStartOffset.floatValue
+        return dragStartOffset.floatValue + fingerOffset.floatValue - liveOffset
+    }
+
+    internal fun onDragStart() {
+        isSettling = false
+        val layout = dragState.listState.layoutInfo.visibleItemsInfo.firstOrNull { it.key == itemKey }
+        dragStartOffset.floatValue = (layout?.offset ?: 0).toFloat()
+        startCenterY.floatValue = (layout?.offset ?: 0) + (layout?.size ?: 0) / 2f
+        fingerOffset.floatValue = 0f
+        dragState.draggedKey = itemKey
+    }
+
+    internal fun onDrag(deltaY: Float) {
+        if (dragState.draggedKey != itemKey) return
+        fingerOffset.floatValue += deltaY
+        reorderLive()
+    }
+
+    private fun reorderLive() {
+        val items = itemsState.value
+        val myIndex = items.indexOfFirst { key(it) == itemKey }
+        if (myIndex !in items.indices) return
+        val myCenter = startCenterY.floatValue + fingerOffset.floatValue
+        val visible = dragState.listState.layoutInfo.visibleItemsInfo
+        val onMove = onMoveState.value
+        // Dragging down: swap when the dragged center passes the next row's midpoint.
+        if (myIndex < items.lastIndex) {
+            val nextKey = key(items[myIndex + 1])
+            val next = visible.firstOrNull { it.key == nextKey }
+            if (next != null && myCenter > next.offset + next.size / 2f) {
+                onMove(myIndex, myIndex + 1)
+                return
+            }
+        }
+        // Dragging up: swap when the dragged center passes the previous row's midpoint.
+        if (myIndex > 0) {
+            val prevKey = key(items[myIndex - 1])
+            val prev = visible.firstOrNull { it.key == prevKey }
+            if (prev != null && myCenter < prev.offset + prev.size / 2f) {
+                onMove(myIndex, myIndex - 1)
+            }
+        }
+    }
+
+    // Reset the drag bookkeeping and fly the lifted row back into its slot.
+    // All state resets happen inside the launched block so the settle animation takes over from
+    // the current visual position without a one-frame jump: isSettling is flipped to true
+    // (switching rendering to settleAnim, already snapped to the last offset) before the drag
+    // flags are cleared.
+    internal fun onDragEnd() {
+        val lastOffset = currentTranslation()
+        if (kotlin.math.abs(lastOffset) < 1f) {
+            fingerOffset.floatValue = 0f
+            dragState.draggedKey = null
+            return
+        }
+        scope.launch {
+            settleAnim.snapTo(lastOffset)
+            isSettling = true
+            fingerOffset.floatValue = 0f
+            dragState.draggedKey = null
+            settleAnim.animateTo(0f, reorderSettleSpec)
+            isSettling = false
+        }
+    }
+}
+
+/**
+ * Remembers a [DragRowState] for one row of a drag-reorderable list.
+ *
+ * [items] must be the exact (optionally section-scoped) list backing the enclosing
+ * `items`/`itemsIndexed` call, and [key] must return the same value used as that call's
+ * `key = { ... }` lambda. Reordering only ever swaps neighbors within [items], so passing a
+ * section-local list is what confines dragging to one section of a multi-section `LazyColumn`.
+ */
+@Composable
+fun <T> rememberDragRowState(
+    dragState: DragReorderState,
+    items: List<T>,
+    item: T,
+    key: (T) -> Any,
+    onMove: (from: Int, to: Int) -> Unit
+): DragRowState<T> {
+    val scope = rememberCoroutineScope()
+    val itemsState = rememberUpdatedState(items)
+    val onMoveState = rememberUpdatedState(onMove)
+    val itemKey = key(item)
+    val rowState = remember(dragState, itemKey) {
+        DragRowState(dragState, itemsState, itemKey, key, onMoveState, scope)
+    }
+    LaunchedEffect(rowState.isDragging) {
+        if (!rowState.isDragging) return@LaunchedEffect
+        autoScrollWhileDragging(dragState.listState, rowState.startCenterY, rowState.fingerOffset)
+    }
+    return rowState
+}
+
+/** Drag-handle gesture: attach to a small handle icon to start/drive/end reordering of [rowState]'s row. */
+fun Modifier.dragHandle(rowState: DragRowState<*>): Modifier = pointerInput(rowState) {
+    detectDragGesturesAfterLongPress(
+        onDragStart = { rowState.onDragStart() },
+        onDragEnd = { rowState.onDragEnd() },
+        onDragCancel = { rowState.onDragEnd() }
+    ) { change, dragAmount ->
+        change.consume()
+        rowState.onDrag(dragAmount.y)
+    }
+}
+
+/**
+ * Visual treatment for a draggable row: while [isLifted], translates the row by [translationY],
+ * scales it up slightly and raises it above its neighbors with a shadow and a solid background so
+ * it fully covers the row beneath instead of showing a translucent overlap of both rows.
+ */
+@Composable
+fun Modifier.dragLift(isLifted: Boolean, translationY: Float): Modifier {
+    val shape = MaterialTheme.shapes.small
+    val scale by animateFloatAsState(
+        targetValue = if (isLifted) 1.02f else 1f,
+        animationSpec = spring(stiffness = Spring.StiffnessMediumLow),
+        label = "dragScale"
+    )
+    return this
+        .graphicsLayer {
+            if (isLifted) {
+                this.translationY = translationY
+                scaleX = scale
+                scaleY = scale
+            }
+        }
+        .then(
+            if (isLifted) {
+                Modifier
+                    .zIndex(1f)
+                    .shadow(8.dp, shape, clip = false)
+                    .background(MaterialTheme.colorScheme.surface, shape)
+            } else {
+                Modifier
+            }
+        )
+}
+
+/**
+ * Scrolls the list while dragging so the entry follows the finger past the viewport edges.
+ * The visual center is tracked independently of the entry's layout slot (which can scroll out of
+ * `LazyListState.layoutInfo.visibleItemsInfo` during a long drag); [startCenterY] is the entry's
+ * viewport center captured at drag start and [fingerOffset] is the raw finger delta. The
+ * resulting scroll is picked up automatically by [DragRowState.translationY] on the next frame,
+ * so no separate scroll-compensation bookkeeping is required here.
+ */
+private suspend fun autoScrollWhileDragging(
+    listState: LazyListState,
+    startCenterY: MutableFloatState,
+    fingerOffset: MutableFloatState
+) {
+    val threshold = 48f
+    val maxSpeed = 24f
+    while (true) {
+        val info = listState.layoutInfo
+        val center = startCenterY.floatValue + fingerOffset.floatValue
+        val top = info.viewportStartOffset + threshold
+        val bottom = info.viewportEndOffset - threshold
+        val delta = when {
+            center < top -> -(top - center).coerceAtMost(maxSpeed)
+            center > bottom -> (center - bottom).coerceAtMost(maxSpeed)
+            else -> 0f
+        }
+        if (delta != 0f) listState.scrollBy(delta)
+        delay(16L.milliseconds)
+    }
+}

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/MainTheme.kt

@@ -46,7 +46,7 @@ data object Spacing {
     val extraSmall = 6.dp
     val small = 8.dp
     val medium = 12.dp
-    val large = 16.dp
+    val large = 12.dp
     val extraLarge = 24.dp
 }
 
@@ -79,6 +79,10 @@ private val lightScheme = lightColorScheme(
     onSecondary = Color(0xFFFFFFFF),
     secondaryContainer = Color(0xFFF1E1BB),
     onSecondaryContainer = Color(0xFF221B04),
+    tertiary = Color(0xFF3C6FE0), // AMSAT Active (darker for light theme)
+    onTertiary = Color(0xFFFFFFFF),
+    tertiaryContainer = Color(0xFFE09800), // AMSAT Telemetry (darker)
+    onTertiaryContainer = Color(0xFF000000),
     background = Color(0xFFFFF8F0),
     onBackground = Color(0xFF1E1B13),
     surface = Color(0xFFFFF8F0),
@@ -101,10 +105,10 @@ private val darkScheme = darkColorScheme(
     onSecondary = Color(0xFF000000),
     secondaryContainer = Color(0xFF404040), // navBar indicator,
     onSecondaryContainer = Color(0xFFE0E0E0), // navBar active icon
-//    tertiary = Color(0xFF121212),
-//    onTertiary = Color(0xFF121212),
-//    tertiaryContainer = Color(0xFF121212),
-//    onTertiaryContainer = Color(0xFF121212),
+    tertiary = Color(0xFF648FFF), // AMSAT Active (from amsat.org/status)
+    onTertiary = Color(0xFF000000),
+    tertiaryContainer = Color(0xFFFFB000), // AMSAT Telemetry
+    onTertiaryContainer = Color(0xFF000000),
     background = Color(0xFF121212),
     onBackground = Color(0xFFE0E0E0),
     surface = Color(0xFF202020), // card background

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/Navigation.kt

@@ -24,13 +24,13 @@ import kotlinx.serialization.Serializable
 sealed class Screen(val iconResId: Int, val titleResId: Int) : NavKey {
 
     @Serializable
-    data object Satellites : Screen(R.drawable.ic_satellites, R.string.nav_sat)
+    data object Satellites : Screen(R.drawable.ic_sputnik, R.string.nav_sat)
 
     @Serializable
     data object Passes : Screen(R.drawable.ic_passes, R.string.nav_pass)
 
     @Serializable
-    data object Radar : Screen(R.drawable.ic_radar, R.string.nav_radar)
+    data object Status : Screen(R.drawable.ic_satellite, R.string.nav_status)
 
     @Serializable
     data object Map : Screen(R.drawable.ic_map, R.string.nav_map)

core/presentation/src/main/res/drawable/ic_add.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M440,520L200,520L200,440L440,440L440,200L520,200L520,440L760,440L760,520L520,520L520,760L440,760L440,520Z" />
+</vector>

core/presentation/src/main/res/drawable/ic_drag_handle.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M20,9H4v2h16V9zM4,15h16v-2H4V15z" />
+</vector>

core/presentation/src/main/res/drawable/ic_pound.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M240,840L240,760Q240,760 256.5,750Q273,740 292.5,720.5Q312,701 328,670.5Q344,640 344,600Q344,589 342.5,579Q341,569 339,560L240,560L240,480L300,480Q279,447 259.5,410.5Q240,374 240,320Q240,228 304,164Q368,100 460,100Q531,100 586,139Q641,178 665,240L591,271Q576,231 540.5,205.5Q505,180 460,180Q402,180 361,221Q320,262 320,320Q320,368 344,400Q368,432 393,480L560,480L560,560L421,560Q423,569 423.5,579Q424,589 424,600Q424,650 406.5,690Q389,730 364,760L560,760Q600,760 621,739Q642,718 650,685L720,720Q709,775 663.5,807.5Q618,840 560,840L240,840Z" />
+</vector>

core/presentation/src/main/res/drawable/ic_radar.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="960"
-    android:viewportHeight="960">
-    <path
-        android:fillColor="@android:color/white"
-        android:pathData="M480,880Q397,880 324,848.5Q251,817 197,763Q143,709 111.5,636Q80,563 80,480Q80,397 111.5,324Q143,251 197,197Q251,143 324,111.5Q397,80 480,80L520,80L520,411Q538,422 549,439.5Q560,457 560,480Q560,513 536.5,536.5Q513,560 480,560Q447,560 423.5,536.5Q400,513 400,480Q400,457 411,439Q422,421 440,411L440,325Q388,339 354,381.5Q320,424 320,480Q320,546 367,593Q414,640 480,640Q546,640 593,593Q640,546 640,480Q640,444 625.5,413.5Q611,383 586,360L643,303Q678,336 699,381.5Q720,427 720,480Q720,580 650,650Q580,720 480,720Q380,720 310,650Q240,580 240,480Q240,390 297,323.5Q354,257 440,243L440,162Q321,177 240.5,267Q160,357 160,480Q160,614 253,707Q346,800 480,800Q614,800 707,707Q800,614 800,480Q800,411 773,351Q746,291 699,247L756,190Q813,245 846.5,319.5Q880,394 880,480Q880,563 848.5,636Q817,709 763,763Q709,817 636,848.5Q563,880 480,880Z" />
-</vector>

core/presentation/src/main/res/drawable/ic_refresh.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M17.65,6.35C16.2,4.9 14.21,4 12,4c-4.42,0 -7.99,3.58 -7.99,8s3.57,8 7.99,8c3.73,0 6.84,-2.55 7.73,-6h-2.08c-0.82,2.33 -3.04,4 -5.65,4 -3.31,0 -6,-2.69 -6,-6s2.69,-6 6,-6c1.66,0 3.14,0.69 4.22,1.78L13,11h7V4l-2.35,2.35z" />
+</vector>

core/presentation/src/main/res/drawable/ic_restore.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M13,3c-4.97,0 -9,4.03 -9,9L1,12l3.89,3.89 0.07,0.14L9,12L6,12c0,-3.87 3.13,-7 7,-7s7,3.13 7,7 -3.13,7 -7,7c-1.93,0 -3.68,-0.79 -4.94,-2.06l-1.42,1.42C8.27,19.99 10.51,21 13,21c4.97,0 9,-4.03 9,-9s-4.03,-9 -9,-9zM12,8v5l4.28,2.54 0.72,-1.21 -3.5,-2.08L13.5,8L12,8z" />
+</vector>

core/presentation/src/main/res/drawable/ic_satellite.xml

@@ -0,0 +1,31 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="128"
+    android:viewportHeight="128">
+  <path
+      android:pathData="m105.14,114.12a2.86,2.86 90,0 0,1.7 -0.85l19.33,-19.33a2.86,2.86 90,0 0,-0 -4.03l-26.58,-26.62a2.86,2.86 90,0 0,-1.84 -0.81l-7.92,-0.63 5.77,-5.77a2.86,2.86 90,0 0,-0 -4.03l-19.6,-19.64a2.86,2.86 90,0 0,-4.07 -0l-5.77,5.77 -0.63,-7.92a2.86,2.86 90,0 0,-0.81 -1.83l-26.63,-26.58a2.86,2.86 90,0 0,-4.07 -0l-19.29,19.29a2.86,2.86 90,0 0,-0 4.07l26.58,26.62a2.86,2.86 90,0 0,1.83 0.81l7.92,0.63 -5.77,5.77a2.86,2.86 90,0 0,-0 4.07l19.6,19.6a2.86,2.86 90,0 0,4.07 -0l5.77,-5.77 0.63,7.92a2.86,2.86 90,0 0,0.81 1.83l26.63,26.58a2.86,2.86 90,0 0,2.06 0.85,2.86 2.86,90 0,0 0.27,-0zM104.82,107.23 L80.97,83.38 80.16,72.69 85.58,67.27 96.28,68.12 120.13,91.93zM55.33,47.85 L44.63,47 20.78,23.19 36.08,7.89 59.89,31.74 60.74,42.44z"
+      android:fillColor="#ffffff"
+      android:strokeColor="#00000000"
+      android:fillType="evenOdd"/>
+  <path
+      android:pathData="m62.65,115.81a2.86,2.86 90,1 0,-0 -5.73c-11.46,-0 -22.88,-4.35 -31.63,-13.11 -8.74,-8.74 -13.1,-20.17 -13.1,-31.61a2.86,2.86 90,1 0,-5.73 -0c-0,12.9 4.94,25.83 14.77,35.66 9.85,9.85 22.77,14.78 35.68,14.78z"
+      android:fillColor="#ffffff"
+      android:strokeColor="#00000000"
+      android:fillType="evenOdd"/>
+  <path
+      android:pathData="m62.65,127a2.86,2.86 90,1 0,-0 -5.73c-14.32,-0 -28.61,-5.44 -39.55,-16.37 -10.93,-10.93 -16.38,-25.23 -16.38,-39.54a2.86,2.86 90,1 0,-5.73 -0c-0,15.76 6.03,31.56 18.06,43.59 12.03,12.03 27.82,18.05 43.6,18.05z"
+      android:fillColor="#ffffff"
+      android:strokeColor="#00000000"
+      android:fillType="evenOdd"/>
+  <path
+      android:pathData="m62.65,104.7a2.86,2.86 90,1 0,-0 -5.73c-8.62,-0 -17.2,-3.26 -23.78,-9.84 -6.58,-6.58 -9.86,-15.17 -9.86,-23.77a2.86,2.86 90,1 0,-5.73 -0c-0,10.06 3.86,20.15 11.53,27.82 7.67,7.67 17.76,11.52 27.83,11.52z"
+      android:fillColor="#ffffff"
+      android:strokeColor="#00000000"
+      android:fillType="evenOdd"/>
+  <path
+      android:pathData="m62.65,93.48a2.86,2.86 90,1 0,-0 -5.73c-5.74,-0 -11.45,-2.17 -15.84,-6.56 -4.38,-4.38 -6.56,-10.1 -6.56,-15.83a2.86,2.86 90,1 0,-5.73 -0c-0,7.19 2.76,14.41 8.24,19.88 5.48,5.48 12.69,8.23 19.89,8.23z"
+      android:fillColor="#ffffff"
+      android:strokeColor="#00000000"
+      android:fillType="evenOdd"/>
+</vector>

core/presentation/src/main/res/values-es/strings.xml

@@ -118,6 +118,11 @@
     <string name="prefs_data_import_transceivers_error">No se importaron transceptores. Usa un SatNOGS (.json) válido.</string>
 
     <string name="prefs_data_sources_title">Fuentes personalizadas</string>
+    <string name="prefs_data_sources_restore">Restaurar fuentes predeterminadas</string>
+    <string name="prefs_data_sources_sat_title">Datos de satélites</string>
+    <string name="prefs_data_sources_transceivers_title">Datos de transceptores</string>
+    <string name="prefs_data_sources_sat_hint">Prioridad arriba: nombres de satélites</string>
+    <string name="prefs_data_sources_transceivers_hint">Prioridad arriba: datos de transceptores</string>
     <string name="prefs_data_sources_tle_switch">URL TLE</string>
     <string name="prefs_data_sources_transceivers_switch">URL transceptores</string>
     <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>

core/presentation/src/main/res/values-ru/strings.xml

@@ -117,6 +117,11 @@
     <string name="prefs_data_import_transceivers_error">Трансиверы не импортированы. Нужен SatNOGS (.json).</string>
 
     <string name="prefs_data_sources_title">Свои источники</string>
+    <string name="prefs_data_sources_restore">Восстановить источники по умолчанию</string>
+    <string name="prefs_data_sources_sat_title">Данные спутников</string>
+    <string name="prefs_data_sources_transceivers_title">Данные трансиверов</string>
+    <string name="prefs_data_sources_sat_hint">Приоритет сверху: названия спутников</string>
+    <string name="prefs_data_sources_transceivers_hint">Приоритет сверху: данные трансиверов</string>
     <string name="prefs_data_sources_tle_switch">URL TLE</string>
     <string name="prefs_data_sources_transceivers_switch">URL трансиверов</string>
     <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>

core/presentation/src/main/res/values-si/strings.xml

@@ -118,6 +118,11 @@
     <string name="prefs_data_import_transceivers_error">සම්ප්‍රේෂක ආයාත නොවීය. වලංගු SatNOGS (.json) ගොනුවක් තෝරන්න.</string>
 
     <string name="prefs_data_sources_title">අභිරුචි මූලාශ්‍ර</string>
+    <string name="prefs_data_sources_restore">පෙරනිමි මූලාශ්‍ර ප්‍රතිස්ථාපනය කරන්න</string>
+    <string name="prefs_data_sources_sat_title">චන්ද්‍රිකා දත්ත</string>
+    <string name="prefs_data_sources_transceivers_title">සම්ප්‍රේෂක දත්ත</string>
+    <string name="prefs_data_sources_sat_hint">ඉහළ ප්‍රමුඛතාව: චන්ද්‍රිකා නම්</string>
+    <string name="prefs_data_sources_transceivers_hint">ඉහළ ප්‍රමුඛතාව: සම්ප්‍රේෂක දත්ත</string>
     <string name="prefs_data_sources_tle_switch">TLE URL</string>
     <string name="prefs_data_sources_transceivers_switch">Transceivers URL</string>
     <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>

core/presentation/src/main/res/values-tr/strings.xml

@@ -149,6 +149,11 @@
     <string name="prefs_data_import_transceivers_error">Transceiver içe aktarılmadı. Geçerli bir SatNOGS (.json) dosyası seçin.</string>
 
     <string name="prefs_data_sources_title">Özel kaynaklar</string>
+    <string name="prefs_data_sources_restore">Varsayılan kaynakları geri yükle</string>
+    <string name="prefs_data_sources_sat_title">Uydu verileri</string>
+    <string name="prefs_data_sources_transceivers_title">Transceiver verileri</string>
+    <string name="prefs_data_sources_sat_hint">Öncelik üstte: uydu adları</string>
+    <string name="prefs_data_sources_transceivers_hint">Öncelik üstte: transceiver verileri</string>
     <string name="prefs_data_sources_tle_switch">TLE URL</string>
     <string name="prefs_data_sources_transceivers_switch">Transceiver URL</string>
     <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>

core/presentation/src/main/res/values-uk/strings.xml

@@ -118,6 +118,11 @@
     <string name="prefs_data_import_transceivers_error">Трансивери не імпортовано. Потрібен SatNOGS (.json).</string>
 
     <string name="prefs_data_sources_title">Власні джерела</string>
+    <string name="prefs_data_sources_restore">Відновити джерела за замовчуванням</string>
+    <string name="prefs_data_sources_sat_title">Дані супутників</string>
+    <string name="prefs_data_sources_transceivers_title">Дані трансиверів</string>
+    <string name="prefs_data_sources_sat_hint">Пріоритет зверху: назви супутників</string>
+    <string name="prefs_data_sources_transceivers_hint">Пріоритет зверху: дані трансиверів</string>
     <string name="prefs_data_sources_tle_switch">URL TLE</string>
     <string name="prefs_data_sources_transceivers_switch">URL трансиверів</string>
     <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>

core/presentation/src/main/res/values-zh/strings.xml

@@ -12,6 +12,45 @@
     <string name="nav_map">地图</string>
     <string name="nav_prefs">设置</string>
 
+    <!-- AMSAT Status screen -->
+    <string name="nav_amsat">AMSAT</string>
+    <string name="amsat_title">AMSAT 卫星状态</string>
+    <string name="amsat_refresh">刷新</string>
+    <string name="amsat_retry">重试</string>
+    <string name="amsat_updated">更新于：</string>
+    <string name="amsat_active">活跃</string>
+    <string name="amsat_tlm">遥测/信标</string>
+    <string name="amsat_not_heard">未听到</string>
+    <string name="amsat_conflict">冲突</string>
+    <string name="amsat_name">名称</string>
+    <string name="amsat_load_failed">加载失败 - 检查网络后重试</string>
+    <string name="amsat_no_reports">此时间段无报告</string>
+    <string name="amsat_close">关闭</string>
+    <string name="amsat_status_heard">已听到</string>
+    <string name="amsat_status_tlm_only">仅遥测</string>
+    <string name="amsat_status_not_heard">未听到</string>
+    <string name="amsat_status_crew_active">乘组活跃</string>
+    <string name="amsat_upload">上传</string>
+    <string name="amsat_upload_back">返回</string>
+    <string name="amsat_upload_report">上传报告到 AMSAT</string>
+    <string name="amsat_upload_status">状态</string>
+    <string name="amsat_upload_callsign">呼号</string>
+    <string name="amsat_upload_grid">网格</string>
+    <string name="amsat_upload_time_now">时间：当前 UTC %s</string>
+    <string name="amsat_upload_submit">提交到 AMSAT</string>
+    <string name="amsat_upload_confirm">确认上传</string>
+    <string name="amsat_upload_confirm_title">确认上传到 AMSAT</string>
+    <string name="amsat_upload_confirm_message">这条公开报告将上传到 AMSAT。\n卫星：%1$s\n状态：%2$s\n呼号：%3$s\n网格：%4$s</string>
+    <string name="amsat_upload_grid_none">未填写</string>
+    <string name="amsat_upload_success">报告已上传</string>
+    <string name="amsat_upload_failed">上传失败：%s</string>
+    <string name="amsat_upload_callsign_required">请填写呼号</string>
+    <string name="amsat_upload_grid_invalid">网格应为 4 或 6 位 Maidenhead 定位符</string>
+    <string name="amsat_upload_active">活跃</string>
+    <string name="amsat_upload_tlm">遥测/信标</string>
+    <string name="amsat_upload_not_heard">未听到</string>
+    <string name="amsat_upload_crew_active">ISS 语音</string>
+
     <!-- Satellites screen -->
     <string name="sat_type_hint">模式：%s</string>
     <string name="sat_type_title">选择模式</string>
@@ -64,6 +103,24 @@
     <string name="radar_doppler_rx_hint">输入下行频率 (MHz)</string>
     <string name="radar_doppler_offset_hint">偏移 (kHz)</string>
 
+    <!-- Radar screen (CAT control / SSTV) -->
+    <string name="radar_connect">连接</string>
+    <string name="radar_disconnect">断开连接</string>
+    <string name="radar_off">关</string>
+    <string name="radar_stop">停止</string>
+    <string name="radar_track">跟踪</string>
+    <string name="radar_tx_base">TX 基频：</string>
+
+    <!-- SSTV screen -->
+    <string name="sstv_grant_permission">授予权限</string>
+    <string name="sstv_listening">正在监听…</string>
+    <string name="sstv_mic_permission">需要麦克风权限</string>
+    <string name="sstv_mode_format">模式：%s</string>
+    <string name="sstv_mode_title">SSTV 模式</string>
+    <string name="sstv_no_signal">无信号</string>
+    <string name="sstv_no_transceiver">未选择收发器</string>
+    <string name="sstv_rx_format">RX：%s Hz</string>
+
     <!-- Map screen -->
     <string name="map_prev">上一个</string>
     <string name="map_next">下一个</string>
@@ -84,10 +141,16 @@
     <string name="prefs_donate_title">支持</string>
     <string name="prefs_privacy_title">隐私政策</string>
 
+    <string name="settings_paired_devices">已配对的蓝牙设备：</string>
+    <string name="settings_split_mode">分频模式（仅 IC-705）</string>
+    <string name="prefs_lat_prefix">纬度：%s°</string>
+    <string name="prefs_lon_prefix">经度：%s°</string>
+    <string name="prefs_qth_prefix">QTH：%s</string>
+
     <string name="prefs_updated_title">更新：%s</string>
     <string name="prefs_updated_time">yyyy MMM d - HH:mm:ss</string>
 
-    <string name="prefs_loc_title">站位</string>
+    <string name="prefs_loc_title">站点位置</string>
     <string name="prefs_loc_gps_title">GPS 定位</string>
     <string name="prefs_loc_gps_error">检查您的位置权限</string>
     <string name="prefs_loc_input_title">输入位置</string>
@@ -95,11 +158,11 @@
     <string name="prefs_loc_qth_title">QTH 网格</string>
     <string name="prefs_loc_qth_error">无效的 QTH 网格</string>
     <string name="prefs_loc_success">位置更新成功</string>
-    <string name="prefs_station_title">站位</string>
-    <string name="prefs_station_lat_text">站位纬度</string>
-    <string name="prefs_station_lon_text">站位经度</string>
+    <string name="prefs_station_title">站点位置</string>
+    <string name="prefs_station_lat_text">站点纬度</string>
+    <string name="prefs_station_lon_text">站点经度</string>
     <string name="prefs_locator_title">QTH 定位</string>
-    <string name="prefs_locator_text">通过 QTH 设置站位</string>
+    <string name="prefs_locator_text">通过 QTH 设置站点位置</string>
 
     <string name="prefs_data_title">卫星数据更新</string>
     <string name="prefs_data_entries">卫星：%s</string>
@@ -113,6 +176,11 @@
     <string name="prefs_data_import_transceivers_error">未导入收发器。请选择有效的 SatNOGS (.json) 文件。</string>
 
     <string name="prefs_data_sources_title">自定义源</string>
+    <string name="prefs_data_sources_restore">恢复默认源</string>
+    <string name="prefs_data_sources_sat_title">卫星数据</string>
+    <string name="prefs_data_sources_transceivers_title">收发器数据</string>
+    <string name="prefs_data_sources_sat_hint">靠前优先：卫星名称</string>
+    <string name="prefs_data_sources_transceivers_hint">靠前优先：收发器数据</string>
     <string name="prefs_data_sources_tle_switch">TLE URL</string>
     <string name="prefs_data_sources_transceivers_switch">收发器 URL</string>
     <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>
@@ -155,6 +223,8 @@
     <string name="prefs_other_switch_sweep">雷达扫描动画</string>
     <string name="prefs_other_switch_sensors">传感器控制雷达</string>
     <string name="prefs_other_switch_night_mode">红色夜间模式</string>
+    <string name="prefs_other_compass_offset">雷达罗盘水平偏移量</string>
+    <string name="prefs_other_compass_offset_elev">雷达罗盘俯仰偏移量</string>
 
     <string name="prefs_highlight_title">仰角高亮</string>
     <string name="prefs_highlight_low">低 &lt; %1$d°</string>
@@ -171,4 +241,7 @@
         \n• Libre Space Foundation (SatNOGS)</string>
     <string name="prefs_outro_license">该应用程序不提供任何保修.</string>
 
+    <!-- Main screen -->
+    <string name="tracking_format">跟踪：%s</string>
+
 </resources>

core/presentation/src/main/res/values/strings.xml

@@ -12,6 +12,7 @@
     <string name="nav_radar">Radar</string>
     <string name="nav_map">Map</string>
     <string name="nav_prefs">Settings</string>
+    <string name="nav_status" translatable="false">AMSAT</string>
 
     <!-- Satellites screen -->
     <string name="sat_type_hint">Modes: %s</string>
@@ -55,18 +56,55 @@
         \n\nPlease update the database at least weekly to get accurate predictions.</string>
     <string name="pass_whatsnew_title" translatable="false">What\'s new in Look4Sat</string>
     <string name="pass_whatsnew_message" translatable="false">
-        * Added small tweaks to Sources and strings. Added official ISS source (#225)
-        \n* Implemented AOS window and elevation highlight filters (#226)
-        \n* Added cleartext traffic support for custom TLE URLs (#227)
-        \n* Fixed manual OMM (.csv) data import, tweaked error messaging (#228)
-        \n* Added support for Icom IC-705 CAT by ruilvo (#229)
-        \n* Added configurable Radar offset to the sensors output by qwqtoday (#230)
-        \n* Localized pass date and time formats for Chinese by atsunatsu (#231)
-        \n* Added linear transponder Doppler calculator by atsunatsu (#232)
-        \n* Added a few tweaks to SSTV sensitivity and reception, similar to Robot36
-        \n* Replaced the types selection dialog with modes selection to avoid confusion
+        * Tweaked sunrise/sunset calculations, added tests by atsunatsu (#241)
+        \n\n* Overhauled sources import, added HTTP status by wty2019wty (#242)
+        \nSources now have priority - the top ones define satellite names and transceiver data.
+        \nYou can enable/disable sources and restore defaults via the Satellite data import dialog.
+        \n\n* Localized AMSAT status screen for Chinese by atsunatsu (#245)
+        \n\n* Extracted hardcoded UI strings to resources by TianhengZhuang (#247)
+        \n\n* Added AMSAT satellite status reports submission by atsunatsu (#248)
+        \n\n* Slightly optimized map performance to reduce ANRs and memory consumption. Zoom in to see satellite labels.
     </string>
 
+    <!-- AMSAT Status screen -->
+    <string name="nav_amsat">AMSAT</string>
+    <string name="amsat_title">AMSAT Satellite Status</string>
+    <string name="amsat_refresh">Refresh</string>
+    <string name="amsat_retry">Retry</string>
+    <string name="amsat_updated">Updated:</string>
+    <string name="amsat_active">Active</string>
+    <string name="amsat_tlm">TLM/Beacon</string>
+    <string name="amsat_not_heard">Not Heard</string>
+    <string name="amsat_conflict">Conflicting</string>
+    <string name="amsat_name">Name</string>
+    <string name="amsat_load_failed">Load failed - check network and retry</string>
+    <string name="amsat_no_reports">No reports for this period</string>
+    <string name="amsat_close">Close</string>
+    <string name="amsat_status_heard">Heard</string>
+    <string name="amsat_status_tlm_only">Telemetry Only</string>
+    <string name="amsat_status_not_heard">Not Heard</string>
+    <string name="amsat_status_crew_active">Crew Active</string>
+    <string name="amsat_upload">Upload</string>
+    <string name="amsat_upload_back">Back</string>
+    <string name="amsat_upload_report">Upload report to AMSAT</string>
+    <string name="amsat_upload_status">Status</string>
+    <string name="amsat_upload_callsign">Callsign</string>
+    <string name="amsat_upload_grid">Grid</string>
+    <string name="amsat_upload_time_now">Time: current UTC %s</string>
+    <string name="amsat_upload_submit">Submit to AMSAT</string>
+    <string name="amsat_upload_confirm">Upload</string>
+    <string name="amsat_upload_confirm_title">Confirm AMSAT upload</string>
+    <string name="amsat_upload_confirm_message">This public report will be uploaded to AMSAT.\nSatellite: %1$s\nStatus: %2$s\nCallsign: %3$s\nGrid: %4$s</string>
+    <string name="amsat_upload_grid_none">Not provided</string>
+    <string name="amsat_upload_success">Report uploaded</string>
+    <string name="amsat_upload_failed">Upload failed: %s</string>
+    <string name="amsat_upload_callsign_required">Callsign is required</string>
+    <string name="amsat_upload_grid_invalid">Grid must be a 4 or 6 character Maidenhead locator</string>
+    <string name="amsat_upload_active">Active</string>
+    <string name="amsat_upload_tlm">TLM/Beacon</string>
+    <string name="amsat_upload_not_heard">Not Heard</string>
+    <string name="amsat_upload_crew_active">Crew Active</string>
+
     <!-- Radar screen -->
     <string name="radar_back">Back</string>
     <string name="radar_notify">Notify</string>
@@ -96,6 +134,24 @@
     <string name="radar_doppler_rx_hint">Enter RX freq (MHz)</string>
     <string name="radar_doppler_offset_hint">Offset (kHz)</string>
 
+    <!-- Radar screen (CAT control / SSTV) -->
+    <string name="radar_connect">Connect</string>
+    <string name="radar_disconnect">Disconnect</string>
+    <string name="radar_off">Off</string>
+    <string name="radar_stop">Stop</string>
+    <string name="radar_track">Track</string>
+    <string name="radar_tx_base">TX Base: </string>
+
+    <!-- SSTV screen -->
+    <string name="sstv_grant_permission">Grant permission</string>
+    <string name="sstv_listening">Listening…</string>
+    <string name="sstv_mic_permission">Microphone access needed</string>
+    <string name="sstv_mode_format">Mode: %s</string>
+    <string name="sstv_mode_title">SSTV Mode</string>
+    <string name="sstv_no_signal">No signal</string>
+    <string name="sstv_no_transceiver">No transceiver selected</string>
+    <string name="sstv_rx_format">RX: %s Hz</string>
+
     <!-- Map screen -->
     <string name="map_prev">Prev</string>
     <string name="map_next">Next</string>
@@ -128,6 +184,12 @@
     <string name="prefs_privacy_title">Privacy Policy</string>
     <string name="prefs_privacy_url" translatable="false">https://sites.google.com/view/look4sat-privacy-policy/home</string>
 
+    <string name="settings_paired_devices">Paired Bluetooth Devices:</string>
+    <string name="settings_split_mode">Split mode (IC-705 only)</string>
+    <string name="prefs_lat_prefix">Lat: %s°</string>
+    <string name="prefs_lon_prefix">Lon: %s°</string>
+    <string name="prefs_qth_prefix">Qth: %s</string>
+
     <string name="prefs_updated_title">Updated: %s</string>
     <string name="prefs_updated_time">d MMM yyyy - HH:mm:ss</string>
 
@@ -156,10 +218,12 @@
     <string name="prefs_data_import_satellites_error">No satellites imported. Select a valid TLE/3LE (.txt) or OMM (.csv) file.</string>
     <string name="prefs_data_import_transceivers_error">No transceivers imported. Select a valid SatNOGS (.json) file.</string>
 
-    <string name="prefs_data_sources_title">Custom sources</string>
-    <string name="prefs_data_sources_tle_switch">TLE URL</string>
-    <string name="prefs_data_sources_transceivers_switch">Transceivers URL</string>
-    <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>
+    <string name="prefs_data_sources_title">Data sources</string>
+    <string name="prefs_data_sources_restore">Restore default sources</string>
+    <string name="prefs_data_sources_sat_title">Satellites data</string>
+    <string name="prefs_data_sources_transceivers_title">Transceivers data</string>
+    <string name="prefs_data_sources_sat_hint">Top priority affects satellite names</string>
+    <string name="prefs_data_sources_transceivers_hint">Top priority affects transceivers data</string>
 
     <string name="prefs_data_output_title">Data output</string>
     <string name="prefs_net_output">Network</string>
@@ -183,6 +247,8 @@
     <string name="prefs_net_frequency_switch">Enable frequency output</string>
     <string name="prefs_net_frequency_address_hint">IP:Port</string>
     <string name="prefs_net_frequency_format_hint">Format</string>
+    <string name="prefs_net_frequency_offset_hint" translatable="false">Frequency offset (Hz)</string>
+    <string name="prefs_net_frequency_offset_help" translatable="false">Range: -50000 to 50000 Hz. Positive values increase reported frequency; negative values decrease it.</string>
 
     <string name="prefs_bt_title">Bluetooth output</string>
     <string name="prefs_bt_rotator_switch">Enable rotation output</string>
@@ -220,4 +286,7 @@
     </string>
     <string name="prefs_outro_license">The app comes with no warranty</string>
 
+    <!-- Main screen -->
+    <string name="tracking_format">Tracking: %s</string>
+
 </resources>

fastlane/metadata/android/en-US/changelogs/default.txt

@@ -1,8 +1,5 @@
-* Added ARISS source, tweaked SSTV sensitivity #225
-* Implemented AOS window and elev filter #226
-* Added cleartext traffic support for TLEs #227
-* Fixed OMM import, tweaked error messages #228
-* Added support for Icom CAT by ruilvo #229
-* Added tweakable Radar offset by qwqtoday #230
-* Localized date/time formats by atsunatsu #231
-* Added linear radio Doppler calc by atsunatsu #232
+* Tweaked sun calculations, added tests by atsunatsu (#241)
+* Overhauled sources import, added HTTP status by wty2019wty (#242)
+* Localized AMSAT status screen for Chinese by atsunatsu (#245)
+* Extracted hardcoded UI strings to resources by TianhengZhuang (#247)
+* Added AMSAT satellite status reports submission by atsunatsu (#248)

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapNightOverlay.kt

@@ -21,6 +21,7 @@ import android.graphics.Canvas
 import android.graphics.Color
 import android.graphics.Paint
 import android.graphics.RectF
+import org.osmdroid.util.GeoPoint
 import org.osmdroid.views.MapView
 import org.osmdroid.views.overlay.Overlay
 import kotlin.math.cos
@@ -39,9 +40,11 @@ import kotlin.math.sin
  * exceeds 90°, i.e. the dot product of the two unit vectors is negative:
  *   dot = sin(lat)*sin(sunLat) + cos(lat)*cos(sunLat)*cos(lon - sunLon) < 0
  *
- * Performance: we sample one column per [stepPx] pixels (default 4) and draw
+ * Performance: we sample one column per stepPx pixels (default 4) and draw
  * filled vertical rectangles.  On a 1080-wide screen this means ~270 trig
- * evaluations per row, which is imperceptible.
+ * evaluations per row, which is imperceptible.  draw() is called on every
+ * frame, so it must stay allocation-free — all fromPixels() calls reuse a
+ * single GeoPoint instance.
  */
 class MapNightOverlay : Overlay() {
 
@@ -58,6 +61,9 @@ class MapNightOverlay : Overlay() {
 
     private val rect = RectF()
 
+    /** Reused across every fromPixels() call — draw() runs on every frame, so it must not allocate */
+    private val reusableGeoPoint = GeoPoint(0.0, 0.0)
+
     override fun draw(canvas: Canvas, mapView: MapView, shadow: Boolean) {
         if (shadow) return
 
@@ -71,6 +77,15 @@ class MapNightOverlay : Overlay() {
         val h = mapView.height
         val stepPx = 4 // sample every N pixels — balance quality vs CPU
 
+        // The map is never rotated, so latitude depends only on y and longitude only on x.
+        // Resolve the top/bottom latitudes once instead of once per column.
+        val latTopRad = Math.toRadians((proj.fromPixels(0, 0, reusableGeoPoint) ?: return).latitude)
+        val latBotRad = Math.toRadians((proj.fromPixels(0, h - 1, reusableGeoPoint) ?: return).latitude)
+        val sinLatTop = sin(latTopRad)
+        val cosLatTop = cos(latTopRad)
+        val sinLatBot = sin(latBotRad)
+        val cosLatBot = cos(latBotRad)
+
         // We scan column by column. For each column we determine the longitude,
         // then find the latitude range that is in night and shade it.
         // Since longitude is constant along a vertical strip and the day/night
@@ -79,22 +94,14 @@ class MapNightOverlay : Overlay() {
 
         var x = 0
         while (x < w) {
-            // Get the geographic coordinate at the top and bottom of this column.
-            val geoTop = proj.fromPixels(x, 0) ?: run { x += stepPx; continue }
-            val geoBot = proj.fromPixels(x, h - 1) ?: run { x += stepPx; continue }
-
+            val geoTop = proj.fromPixels(x, 0, reusableGeoPoint) ?: run { x += stepPx; continue }
             val lonRad = Math.toRadians(geoTop.longitude)
             val cosLonDiff = cos(lonRad - sunLonRad)
 
-            // Top pixel geographic lat
-            val latTopRad = Math.toRadians(geoTop.latitude)
-            // Bottom pixel geographic lat (osmdroid: y=0 is top of screen, higher y = lower lat)
-            val latBotRad = Math.toRadians(geoBot.latitude)
-
             // dot(sunVec, pointVec) < 0 → night
             // dot = sin(lat)*sinSunLat + cos(lat)*cosSunLat*cosLonDiff
-            val dotTop = sin(latTopRad) * sinSunLat + cos(latTopRad) * cosSunLat * cosLonDiff
-            val dotBot = sin(latBotRad) * sinSunLat + cos(latBotRad) * cosSunLat * cosLonDiff
+            val dotTop = sinLatTop * sinSunLat + cosLatTop * cosSunLat * cosLonDiff
+            val dotBot = sinLatBot * sinSunLat + cosLatBot * cosSunLat * cosLonDiff
 
             when {
                 dotTop < 0 && dotBot < 0 -> {
@@ -142,7 +149,7 @@ class MapNightOverlay : Overlay() {
         var hi = yBot
         while (hi - lo > 1) {
             val mid = (lo + hi) / 2
-            val geo = proj.fromPixels(x, mid) ?: return mid
+            val geo = proj.fromPixels(x, mid, reusableGeoPoint) ?: return mid
             val latRad = Math.toRadians(geo.latitude)
             val dot = sin(latRad) * sinSunLat + cos(latRad) * cosSunLat * cosLonDiff
             if (dot < 0) hi = mid else lo = mid

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapScreen.kt

@@ -62,7 +62,6 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import com.rtbishop.look4sat.core.domain.predict.OrbitalObject
-import com.rtbishop.look4sat.core.domain.predict.OrbitalPos
 import com.rtbishop.look4sat.core.domain.repository.IContainerProvider
 import com.rtbishop.look4sat.core.presentation.IconCard
 import com.rtbishop.look4sat.core.presentation.NextPassRow
@@ -71,6 +70,10 @@ import com.rtbishop.look4sat.core.presentation.TimerRow
 import com.rtbishop.look4sat.core.presentation.TopBar
 import com.rtbishop.look4sat.core.presentation.isVerticalLayout
 import com.rtbishop.look4sat.core.presentation.layoutPadding
+import org.osmdroid.events.DelayedMapListener
+import org.osmdroid.events.MapListener
+import org.osmdroid.events.ScrollEvent
+import org.osmdroid.events.ZoomEvent
 import org.osmdroid.tileprovider.tilesource.XYTileSource
 import org.osmdroid.util.GeoPoint
 import org.osmdroid.views.CustomZoomButtonsController
@@ -126,6 +129,21 @@ fun MapDestination() {
     val viewModel: MapViewModel = viewModel(factory = MapViewModel.factory(container))
     val uiState by viewModel.uiState.collectAsStateWithLifecycle()
     val mapView = rememberMapViewWithLifecycle()
+    val lifecycle = LocalLifecycleOwner.current.lifecycle
+    DisposableEffect(lifecycle) {
+        val observer = LifecycleEventObserver { _, event ->
+            when (event) {
+                Lifecycle.Event.ON_START -> viewModel.onAction(MapAction.SetVisible(true))
+                Lifecycle.Event.ON_STOP -> viewModel.onAction(MapAction.SetVisible(false))
+                else -> {}
+            }
+        }
+        lifecycle.addObserver(observer)
+        onDispose {
+            lifecycle.removeObserver(observer)
+            viewModel.onAction(MapAction.SetVisible(false))
+        }
+    }
     MapScreen(uiState, viewModel::onAction, mapView)
 }
 
@@ -283,19 +301,49 @@ private fun setStationPosition(stationPos: GeoPos, mapView: MapView) {
 private val markerPool = HashMap<String, Marker>()
 private var lastMapView: MapView? = null
 
+/**
+ * Above this many satellites inside the viewport labels are dropped in favor of a single
+ * shared dot icon. Per-satellite label bitmaps cost ~90KB each, so drawing thousands of them
+ * exhausts memory and stalls the UI thread — and overlapping labels are unreadable anyway.
+ */
+private const val LABEL_LIMIT = 128
+
+/** Degrees of space around the viewport so markers don't pop in at the edges */
+private const val VIEWPORT_MARGIN = 8.0
+
+/** Debounce for viewport-driven marker refreshes, in milliseconds */
+private const val MAP_LISTENER_DELAY = 128L
+
+/** Shared dot icon used when too many satellites are visible to label them */
+private var dotIcon: Drawable? = null
+
+/** Scratch list reused every frame to avoid per-tick allocation */
+private val visibleSats = ArrayList<Pair<OrbitalObject, GeoPos>>()
+
+/** Last emitted positions, replayed on scroll/zoom so culled markers appear without waiting for a tick */
+private var lastPositions: Map<OrbitalObject, GeoPos>? = null
+private var lastAction: ((OrbitalObject) -> Unit)? = null
+
 private fun setPositions(
     posMap: Map<OrbitalObject, GeoPos>,
     mapView: MapView,
     action: (OrbitalObject) -> Unit
 ) {
     try {
+        lastPositions = posMap
+        lastAction = action
         // Clear caches when the MapView instance changes (e.g. config change)
         if (lastMapView !== mapView) {
             lastMapView = mapView
             markerPool.clear()
             iconCache.evictAll()
+            dotIcon = null
             footprintPolyline = null
             footprintPoints = null
+            mapView.addMapListener(DelayedMapListener(object : MapListener {
+                override fun onScroll(event: ScrollEvent?) = refreshPositions(mapView)
+                override fun onZoom(event: ZoomEvent?) = refreshPositions(mapView)
+            }, MAP_LISTENER_DELAY))
         }
         // Reuse the existing FolderOverlay — creating a new one and replacing it
         // causes osmdroid to detach shared Marker objects, making them invisible.
@@ -304,17 +352,48 @@ private fun setPositions(
         }
         folder.items.clear()
 
-        val activeNames = HashSet<String>(posMap.size)
-        posMap.forEach { (satellite, geoPos) ->
+        // Cull satellites outside the viewport: only meaningful once zoomed in, but that is
+        // exactly when marker labels are shown and drawing is most expensive.
+        visibleSats.clear()
+        if (mapView.width > 0 && mapView.height > 0) {
+            val box = mapView.boundingBox
+            val latNorth = box.latNorth + VIEWPORT_MARGIN
+            val latSouth = box.latSouth - VIEWPORT_MARGIN
+            val lonWest = box.lonWest - VIEWPORT_MARGIN
+            val lonEast = box.lonEast + VIEWPORT_MARGIN
+            val wrapsDateLine = box.lonWest > box.lonEast
+            for ((satellite, geoPos) in posMap) {
+                val lat = geoPos.latitude
+                if (lat !in latSouth..latNorth) continue
+                val lon = geoPos.longitude
+                val isLonVisible = if (wrapsDateLine) lon >= lonWest || lon <= lonEast
+                else lon in lonWest..lonEast
+                if (isLonVisible) visibleSats.add(satellite to geoPos)
+            }
+        } else {
+            for (entry in posMap) visibleSats.add(entry.key to entry.value)
+        }
+
+        val showLabels = visibleSats.size <= LABEL_LIMIT
+        val activeNames = HashSet<String>(visibleSats.size)
+        for ((satellite, geoPos) in visibleSats) {
             val name = satellite.data.name
             activeNames.add(name)
             val marker = markerPool.getOrPut(name) {
                 Marker(mapView).apply {
                     setInfoWindow(null)
                     setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_CENTER)
-                    icon = getCachedTextIcon(name, mapView)
+                    // Resolve the satellite via relatedObject so the listener is allocated
+                    // once per marker instead of once per satellite per tick
+                    setOnMarkerClickListener { clicked, _ ->
+                        (clicked.relatedObject as? OrbitalObject)?.let(action)
+                        true
+                    }
                 }
             }
+            marker.relatedObject = satellite
+            val icon = if (showLabels) getCachedTextIcon(name, mapView) else getDotIcon(mapView)
+            if (marker.icon !== icon) marker.icon = icon
             // Update position in-place — reuse existing GeoPoint if available
             val pos = marker.position
             if (pos != null) {
@@ -323,22 +402,32 @@ private fun setPositions(
             } else {
                 marker.position = GeoPoint(geoPos.latitude, geoPos.longitude)
             }
-            marker.setOnMarkerClickListener { _, _ ->
-                action(satellite)
-                true
-            }
             folder.add(marker)
         }
-        // Evict markers for satellites no longer tracked
-        val iter = markerPool.keys.iterator()
-        while (iter.hasNext()) {
-            if (iter.next() !in activeNames) iter.remove()
-        }
+        // Evict markers that are no longer tracked or no longer visible
+        markerPool.keys.retainAll(activeNames)
+        visibleSats.clear()
     } catch (e: Exception) {
         println(e)
     }
 }
 
+/** Re-applies the last known positions against the new viewport after a pan or zoom */
+private fun refreshPositions(mapView: MapView): Boolean {
+    val posMap = lastPositions ?: return false
+    val action = lastAction ?: return false
+    setPositions(posMap, mapView, action)
+    mapView.invalidate()
+    return true
+}
+
+private fun getDotIcon(mapView: MapView): Drawable = dotIcon ?: run {
+    val size = 20
+    val bitmap = createBitmap(size, size)
+    Canvas(bitmap).drawCircle(size / 2f, size / 2f, size / 2f - 2f, textPaint)
+    bitmap.toDrawable(mapView.context.resources).also { dotIcon = it }
+}
+
 private fun getCachedTextIcon(name: String, mapView: MapView): Drawable {
     iconCache[name]?.let { return it }
     val labelRect = Rect()
@@ -376,9 +465,8 @@ private fun setSatelliteTrack(satTrack: List<List<GeoPos>>, mapView: MapView) {
 private var footprintPolyline: Polyline? = null
 private var footprintPoints: ArrayList<GeoPoint>? = null
 
-private fun setFootprint(orbitalPos: OrbitalPos, mapView: MapView) {
+private fun setFootprint(rangeCircle: List<GeoPos>, mapView: MapView) {
     try {
-        val rangeCircle = orbitalPos.getRangeCircle()
         var pts = footprintPoints
         if (pts == null || pts.size != rangeCircle.size) {
             pts = ArrayList(rangeCircle.size)
@@ -508,9 +596,28 @@ private fun rememberMapViewWithLifecycle(): MapView {
         lifecycle.addObserver(lifecycleObserver)
         onDispose { lifecycle.removeObserver(lifecycleObserver) }
     }
+    // The overlay caches below are file-level (shared across MapView instances), so they must be
+    // released with the MapView or they keep the Activity and its bitmaps alive after disposal.
+    DisposableEffect(mapView) {
+        onDispose {
+            clearMapCaches()
+            mapView.onDetach()
+        }
+    }
     return mapView
 }
 
+private fun clearMapCaches() {
+    markerPool.clear()
+    iconCache.evictAll()
+    dotIcon = null
+    footprintPolyline = null
+    footprintPoints = null
+    lastPositions = null
+    lastAction = null
+    lastMapView = null
+}
+
 @Composable
 private fun rememberMapViewLifecycleObserver(mapView: MapView) = remember(mapView) {
     LifecycleEventObserver { _, event ->

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapState.kt

@@ -20,7 +20,6 @@ package com.rtbishop.look4sat.feature.map
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import com.rtbishop.look4sat.core.domain.predict.OrbitalObject
 import com.rtbishop.look4sat.core.domain.predict.OrbitalPass
-import com.rtbishop.look4sat.core.domain.predict.OrbitalPos
 
 data class MapState(
     val mapData: MapData? = null,
@@ -29,7 +28,7 @@ data class MapState(
     val stationPosition: GeoPos? = null,
     val orbitalPass: OrbitalPass,
     val track: List<List<GeoPos>>? = null,
-    val footprint: OrbitalPos? = null,
+    val footprint: List<GeoPos>? = null,
     val positions: Map<OrbitalObject, GeoPos>? = null,
     val sunLatDeg: Double = 0.0,
     val sunLonDeg: Double = 0.0,
@@ -42,6 +41,7 @@ sealed interface MapAction {
     data object SelectNext : MapAction
     data class SelectItem(val item: OrbitalObject) : MapAction
     data class SelectDefaultItem(val catnum: Int) : MapAction
+    data class SetVisible(val isVisible: Boolean) : MapAction
 }
 
 data class MapData(

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapViewModel.kt

@@ -36,6 +36,7 @@ import com.rtbishop.look4sat.core.domain.utility.toMapGeoPos
 import com.rtbishop.look4sat.core.domain.utility.toDegrees
 import com.rtbishop.look4sat.core.domain.utility.toTimerString
 import com.rtbishop.look4sat.core.presentation.getDefaultPass
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.async
 import kotlinx.coroutines.awaitAll
@@ -45,10 +46,12 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.collectLatest
+import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 import java.util.Date
+import kotlin.time.Duration.Companion.milliseconds
 
 class MapViewModel(
     private val satelliteRepo: ISatelliteRepo,
@@ -69,6 +72,9 @@ class MapViewModel(
     private var dataUpdateJob: Job? = null
     private var dataUpdateRate = 1000L
     private var selectedOrbitalObject: OrbitalObject? = null
+
+    /** Gates the prediction loop so it doesn't burn CPU while the map isn't on screen */
+    private val isScreenVisible = MutableStateFlow(true)
     val uiState: StateFlow<MapState> = _uiState
 
     init {
@@ -87,6 +93,7 @@ class MapViewModel(
             MapAction.SelectNext -> scrollSelection(false)
             is MapAction.SelectItem -> selectSatellite(action.item)
             is MapAction.SelectDefaultItem -> selectDefaultSatellite(action.catnum)
+            is MapAction.SetVisible -> isScreenVisible.value = action.isVisible
         }
     }
 
@@ -124,7 +131,11 @@ class MapViewModel(
         selectedOrbitalObject = orbitalObject
         viewModelScope.launch {
             dataUpdateJob?.cancelAndJoin()
-            dataUpdateJob = launch {
+            // Default dispatcher is mandatory: viewModelScope is Main.immediate, and every
+            // satelliteRepo call internally hops to Default and resumes back on the caller's
+            // dispatcher. On Main that posts one continuation per satellite per tick, which
+            // floods the looper and ANRs for users tracking thousands of objects.
+            dataUpdateJob = launch(Dispatchers.Default) {
                 val dateNow = Date()
                 getStationPosition()
                 getSatTrack(orbitalObject, stationPos, dateNow)
@@ -135,9 +146,11 @@ class MapViewModel(
                     else -> updateFreq
                 }
                 while (isActive) {
+                    // Suspends while the map is off-screen instead of predicting into the void
+                    isScreenVisible.first { it }
                     dateNow.time = System.currentTimeMillis()
                     updateMapState(orbitalObject, allSatellites, stationPos, dateNow)
-                    delay(effectiveRate)
+                    delay(effectiveRate.milliseconds)
                 }
             }
         }
@@ -187,7 +200,8 @@ class MapViewModel(
 
         // 2. Derive footprint, info data, sun and moon position from already-computed state
         val satPos = selectedSatPos ?: satelliteRepo.getPosition(selected, pos, date.time)
-        val footprint = satPos
+        // Range circle is 721 trig-heavy points — keep it on this background dispatcher
+        val footprint = satPos.getRangeCircle()
         val mapData = buildMapData(selected, satPos, date)
         val sunPos = CelestialComputer.getSunPosition(stationPos, date.time)
         val moonPos = CelestialComputer.getMoonPosition(stationPos, date.time)
@@ -294,7 +308,7 @@ class MapViewModel(
 
     companion object {
         /** Number of parallel chunks for satellite position computation */
-        private const val PARALLEL_CHUNKS = 4
+        private val PARALLEL_CHUNKS = Runtime.getRuntime().availableProcessors().coerceIn(2, 8)
 
         fun factory(container: IMainContainer) = viewModelFactory {
             initializer {

feature/passes/src/main/java/com/rtbishop/look4sat/feature/passes/PassesDialog.kt

@@ -58,7 +58,7 @@ import androidx.compose.ui.unit.sp
 import com.rtbishop.look4sat.core.presentation.LocalSpacing
 import com.rtbishop.look4sat.core.presentation.MainTheme
 import com.rtbishop.look4sat.core.presentation.R
-import com.rtbishop.look4sat.core.presentation.SharedDialog
+import com.rtbishop.look4sat.core.presentation.ConfirmDialog
 import com.rtbishop.look4sat.core.presentation.ElevationHighColor
 import com.rtbishop.look4sat.core.presentation.ElevationLowColor
 import com.rtbishop.look4sat.core.presentation.elevationColor
@@ -140,7 +140,7 @@ internal fun PassesFilterDialog(
         )
         cancel()
     }
-    SharedDialog(title = stringResource(R.string.pass_filter_title), onCancel = cancel, onAccept = onAccept) {
+    ConfirmDialog(title = stringResource(R.string.pass_filter_title), onCancel = cancel, onAccept = onAccept) {
         SliderRow(
             title = stringResource(R.string.pass_filter_elev),
             value = elevationValueNew.doubleValue,
@@ -365,7 +365,7 @@ internal fun RadiosDialog(modes: List<String>, cancel: () -> Unit, accept: (List
         selected.value = if (mode in selected.value) selected.value - mode else selected.value + mode
     }
     val onAccept = { accept(selected.value.toList()).also { cancel() } }
-    SharedDialog(title = stringResource(R.string.pass_modes_title), onCancel = cancel, onAccept = onAccept) {
+    ConfirmDialog(title = stringResource(R.string.pass_modes_title), onCancel = cancel, onAccept = onAccept) {
         LazyVerticalGrid(
             columns = GridCells.Adaptive(240.dp),
             modifier = Modifier

feature/passes/src/main/java/com/rtbishop/look4sat/feature/passes/PassesScreen.kt

@@ -30,7 +30,6 @@ import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.width
@@ -72,10 +71,10 @@ import com.rtbishop.look4sat.core.presentation.MainTheme
 import com.rtbishop.look4sat.core.presentation.NextPassRow
 import com.rtbishop.look4sat.core.presentation.R
 import com.rtbishop.look4sat.core.presentation.ScreenColumn
-import com.rtbishop.look4sat.core.presentation.SharedDialog
 import com.rtbishop.look4sat.core.presentation.SwipeableItem
 import com.rtbishop.look4sat.core.presentation.TimerRow
 import com.rtbishop.look4sat.core.presentation.TopBar
+import com.rtbishop.look4sat.core.presentation.WhatsNewDialog
 import com.rtbishop.look4sat.core.presentation.elevationColor
 import com.rtbishop.look4sat.core.presentation.infiniteMarquee
 import com.rtbishop.look4sat.core.presentation.isVerticalLayout
@@ -136,27 +135,14 @@ private fun PassesScreen(
     }
     if (uiState.shouldSeeWhatsNew) {
         val dismiss = { onAction(PassesAction.DismissWhatsNew) }
-        SharedDialog(
-            title = stringResource(R.string.pass_whatsnew_title),
-            onDismissRequest = dismiss,
-            onAccept = dismiss,
-            titleFontSize = 18
-        ) { padding ->
-            Text(
-                text = stringResource(R.string.pass_whatsnew_message),
-                fontSize = 16.sp,
-                color = MaterialTheme.colorScheme.onSurface,
-                modifier = Modifier.padding(horizontal = padding)
-            )
-            Spacer(modifier = Modifier.height(0.dp))
-        }
+        WhatsNewDialog(onDismiss = dismiss)
     }
     ScreenColumn(
         topBar = { isVerticalLayout ->
             TopBar(
                 isVerticalLayout = isVerticalLayout,
                 startAction = {
-                    IconCard(action = { onAction(PassesAction.TogglePassesDialog) }, resId = R.drawable.ic_filter)
+                    IconCard(action = { onAction(PassesAction.ToggleRadiosDialog) }, resId = R.drawable.ic_radios)
                 },
                 topInfo = {
                     TimerRow(timeString = uiState.nextTime, isTimeAos = uiState.isNextTimeAos)
@@ -165,7 +151,7 @@ private fun PassesScreen(
                     NextPassRow(pass = uiState.nextPass, isUtc = uiState.isUtc)
                 },
                 endAction = {
-                    IconCard(action = { onAction(PassesAction.ToggleRadiosDialog) }, resId = R.drawable.ic_radios)
+                    IconCard(action = { onAction(PassesAction.TogglePassesDialog) }, resId = R.drawable.ic_filter)
                 }
             )
         }

feature/passes/src/main/java/com/rtbishop/look4sat/feature/passes/PassesViewModel.kt

@@ -106,17 +106,18 @@ class PassesViewModel(
                 .collectLatest { (allPasses, isUtc, showDeepSpace) ->
                     val filtered = if (showDeepSpace) allPasses
                     else allPasses.filter { !it.isDeepSpace }
-                    // Expensive: recompute once per pass-list/UTC change, not every second
+                    // Expensive: recompute sun times once per items/UTC change, not every second
                     val sunTimes = computeSunTimes(filtered, isUtc)
-                    val grouped = groupPasses(filtered, isUtc)
-                    _uiState.update { it.copy(sunTimes = sunTimes, groupedPasses = grouped) }
+                    _uiState.update { it.copy(sunTimes = sunTimes) }
                     while (isActive) {
                         val timeNow = System.currentTimeMillis()
                         val processed = computePassProgress(filtered, timeNow)
+                        val grouped = groupPasses(processed, isUtc)
                         val (nextPass, nextTime, isAos) = resolveNextPass(processed, timeNow)
                         _uiState.update {
                             it.copy(
                                 itemsList = processed,
+                                groupedPasses = grouped,
                                 nextPass = nextPass,
                                 nextTime = nextTime,
                                 isNextTimeAos = isAos

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/RadarScreen.kt

@@ -31,9 +31,12 @@ import androidx.compose.foundation.border
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.asPaddingValues
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.pager.HorizontalPager
 import androidx.compose.foundation.pager.rememberPagerState
@@ -115,6 +118,7 @@ private fun RadarScreen(
     Column(
         modifier = Modifier
             .layoutPadding()
+            .padding(bottom = WindowInsets.navigationBars.asPaddingValues().calculateBottomPadding())
             .keepScreenOn(),
         verticalArrangement = Arrangement.spacedBy(6.dp)
     ) {
@@ -198,7 +202,8 @@ private fun PagerCard(
                         transceivers = uiState.transceivers.transmitters,
                         selectedUuid = uiState.transceivers.selectedUuid,
                         orbitalPos = uiState.orbitalPos,
-                        onAction = onAction
+                        onAction = onAction,
+                        calculatorOffsetKHz = uiState.calculatorOffsetKHz
                     )
                     RadarPage.Sstv -> SstvPage(
                         sstv = uiState.sstv,

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/RadarState.kt

@@ -63,7 +63,8 @@ data class RadarState(
     val moonPosition: CelestialComputer.MoonPosition? = null,
     val transceivers: TransceiverSubState = TransceiverSubState(),
     val radioControl: RadioControlSubState = RadioControlSubState(),
-    val sstv: SstvSubState = SstvSubState()
+    val sstv: SstvSubState = SstvSubState(),
+    val calculatorOffsetKHz: String = ""
 )
 
 enum class SstvStatus { Idle, Recording }
@@ -97,4 +98,7 @@ sealed interface RadarAction {
     data object SstvReset : RadarAction
     data class SstvSelectMode(val modeName: String) : RadarAction
     data class SstvPermissionResult(val granted: Boolean) : RadarAction
+
+    // Calculator actions
+    data class ChangeCalculatorOffset(val offsetKHz: String) : RadarAction
 }

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/RadarViewModel.kt

@@ -65,8 +65,8 @@ class RadarViewModel(
     private val showToast: IShowToast
 ) : ViewModel() {
 
-    private val stationPos = settingsRepo.stationPosition.value
-    private val magDeclination = sensorsRepo.getMagDeclination(stationPos)
+    private var stationPos = settingsRepo.stationPosition.value
+    private var magDeclination = sensorsRepo.getMagDeclination(stationPos)
     private var compassOffset = settingsRepo.otherSettings.value.radarCompassOffset
     private var compassOffsetElev = settingsRepo.otherSettings.value.radarCompassOffsetElev
     private var transponders: List<SatRadio> = emptyList()
@@ -92,6 +92,7 @@ class RadarViewModel(
 
     init {
         collectSettingsChanges()  // also handles initial sensor subscription
+        collectStationPositionChanges()
         collectPassAndStartTickLoop()
         collectRadioTrackingState()
     }
@@ -138,6 +139,23 @@ class RadarViewModel(
         }
     }
 
+    private fun collectStationPositionChanges() {
+        viewModelScope.launch {
+            settingsRepo.stationPosition.collect { newPos ->
+                if (stationPos != newPos) {
+                    stationPos = newPos
+                    magDeclination = sensorsRepo.getMagDeclination(stationPos)
+                    lastCelestialUpdateMs = 0L // force celestial recompute on next tick
+                    val pass = _uiState.value.currentPass ?: return@collect
+                    if (!pass.isDeepSpace) {
+                        val track = satelliteRepo.getTrack(pass.orbitalObject, stationPos, pass.aosTime, pass.losTime)
+                        _uiState.update { it.copy(satTrack = track) }
+                    }
+                }
+            }
+        }
+    }
+
     // --- Pass loading split into focused functions ---
 
     private fun collectPassAndStartTickLoop() {
@@ -242,7 +260,17 @@ class RadarViewModel(
                 // Compute toggle state before the update so we don't read post-update value
                 val isTogglingOff = _uiState.value.transceivers.selectedUuid == action.uuid
                 val newUuid = if (isTogglingOff) null else action.uuid
-                _uiState.update { it.copy(transceivers = it.transceivers.copy(selectedUuid = newUuid)) }
+                // Load the saved offset for the newly selected satellite
+                val offsetKHz = if (!isTogglingOff) {
+                    transponders.find { it.uuid == action.uuid }
+                        ?.catnum?.let { settingsRepo.getSatelliteOffset(it) } ?: ""
+                } else ""
+                _uiState.update {
+                    it.copy(
+                        transceivers = it.transceivers.copy(selectedUuid = newUuid),
+                        calculatorOffsetKHz = offsetKHz
+                    )
+                }
                 // Only update the tracking service when selecting a different transponder to
                 // avoid resetting a user-adjusted TX base on re-expand
                 if (!isTogglingOff) {
@@ -291,6 +319,15 @@ class RadarViewModel(
                 sstvDecoder?.clearPixels()
                 _uiState.update { it.copy(sstv = it.sstv.copy(currentFrame = null)) }
             }
+            is RadarAction.ChangeCalculatorOffset -> {
+                val catnum = _uiState.value.transceivers.selectedUuid?.let { uuid ->
+                    transponders.find { it.uuid == uuid }?.catnum
+                }
+                if (catnum != null) {
+                    settingsRepo.setSatelliteOffset(catnum, action.offsetKHz)
+                }
+                _uiState.update { it.copy(calculatorOffsetKHz = action.offsetKHz) }
+            }
         }
     }
 

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/SstvPage.kt

@@ -49,14 +49,15 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.asImageBitmap
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import com.rtbishop.look4sat.core.presentation.ConfirmDialog
 import com.rtbishop.look4sat.core.presentation.IconCard
 import com.rtbishop.look4sat.core.presentation.OutlinedText
 import com.rtbishop.look4sat.core.presentation.R
-import com.rtbishop.look4sat.core.presentation.SharedDialog
 import com.rtbishop.look4sat.core.presentation.infiniteMarquee
 import kotlin.math.roundToInt
 
@@ -78,12 +79,12 @@ internal fun SstvPage(
             ) {
                 Text(text = "🎙️", fontSize = 48.sp)
                 Text(
-                    text = "Microphone access needed",
+                    text = stringResource(R.string.sstv_mic_permission),
                     fontSize = 16.sp,
                     color = MaterialTheme.colorScheme.onSurface
                 )
                 Button(onClick = requestMicPermission) {
-                    Text("Grant permission")
+                    Text(stringResource(R.string.sstv_grant_permission))
                 }
             }
         }
@@ -96,14 +97,14 @@ internal fun SstvPage(
     if (showModeDialog.value) {
         val allModes = remember(sstv.supportedModes) { listOf("Auto") + sstv.supportedModes }
         val dismiss = { showModeDialog.value = false }
-        SharedDialog(
-            title = "SSTV Mode",
-            onDismissRequest = dismiss,
-            onAccept = dismiss
-        ) { _ ->
+        ConfirmDialog(
+            title = stringResource(R.string.sstv_mode_title),
+            onAccept = dismiss,
+            onCancel = dismiss
+        ) {
             LazyColumn(
                 modifier = Modifier
-                    .fillMaxHeight(0.7f)
+                    .fillMaxHeight(0.69f)
                     .background(MaterialTheme.colorScheme.background),
                 verticalArrangement = Arrangement.spacedBy(1.dp)
             ) {
@@ -167,7 +168,7 @@ internal fun SstvPage(
             )
         } else {
             Text(
-                text = if (sstv.status == SstvStatus.Recording) "Listening…" else "No signal",
+                text = if (sstv.status == SstvStatus.Recording) stringResource(R.string.sstv_listening) else stringResource(R.string.sstv_no_signal),
                 color = MaterialTheme.colorScheme.onSurface,
                 fontSize = 16.sp,
                 modifier = Modifier.align(Alignment.Center)
@@ -196,7 +197,7 @@ internal fun SstvPage(
         ) {
             // Doppler-corrected downlink frequency hint
             OutlinedText(
-                text = dopplerFrequency?.let { "RX: $it Hz" } ?: "No transceiver selected",
+                text = dopplerFrequency?.let { stringResource(R.string.sstv_rx_format, it) } ?: stringResource(R.string.sstv_no_transceiver),
                 fontSize = 18.sp,
                 fontWeight = FontWeight.Bold,
                 fillColor = MaterialTheme.colorScheme.primary,
@@ -227,7 +228,7 @@ internal fun SstvPage(
                 ) {
                     Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
                         Text(
-                            text = "Mode: ${sstv.selectedMode}",
+                            text = stringResource(R.string.sstv_mode_format, sstv.selectedMode),
                             fontSize = 14.sp,
                             maxLines = 1,
                             color = MaterialTheme.colorScheme.onSurface,

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/TransceiversPage.kt

@@ -21,14 +21,18 @@ import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.expandVertically
 import androidx.compose.animation.shrinkVertically
 import androidx.compose.foundation.background
+import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.FlowRow
+import androidx.compose.foundation.layout.IntrinsicSize
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
@@ -39,16 +43,20 @@ import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.text.BasicTextField
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material3.FilterChip
 import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedButton
 import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Slider
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
@@ -59,6 +67,7 @@ import androidx.compose.ui.draw.rotate
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.text.style.TextAlign
@@ -68,6 +77,7 @@ import androidx.compose.ui.unit.sp
 import com.rtbishop.look4sat.core.domain.model.SatRadio
 import com.rtbishop.look4sat.core.domain.predict.OrbitalPos
 import com.rtbishop.look4sat.core.domain.utility.DopplerFrequencyCalculator
+import com.rtbishop.look4sat.core.domain.utility.TransponderMapper
 import com.rtbishop.look4sat.core.presentation.CardButton
 import com.rtbishop.look4sat.core.presentation.R
 import com.rtbishop.look4sat.core.presentation.formatFrequency
@@ -118,10 +128,12 @@ fun CalculatorPage(
     selectedUuid: String?,
     orbitalPos: OrbitalPos?,
     onAction: (RadarAction) -> Unit,
+    calculatorOffsetKHz: String = "",
     modifier: Modifier = Modifier
 ) {
     val calculatorTransceivers = remember(transceivers) {
         transceivers.filter(DopplerFrequencyCalculator::isNamedLinearTransponder)
+            .let(DopplerFrequencyCalculator::deduplicateTransponders)
     }
     val selectedTransceiver = remember(calculatorTransceivers, selectedUuid) {
         calculatorTransceivers.firstOrNull { it.uuid == selectedUuid }
@@ -166,9 +178,11 @@ fun CalculatorPage(
         }
 
         item {
-            DopplerCalculatorPanel(
+            DopplerFrequencyCalculator(
                 transponder = selectedTransceiver,
                 orbitalPos = orbitalPos,
+                offsetKHz = calculatorOffsetKHz,
+                onOffsetChange = { onAction(RadarAction.ChangeCalculatorOffset(it)) },
                 modifier = Modifier.fillMaxWidth()
             )
         }
@@ -389,7 +403,7 @@ private fun ExpandedRadioControl(
                     modifier = Modifier.fillMaxWidth()
                 ) {
                     Text(
-                        text = "TX Base: ",
+                        text = stringResource(R.string.radar_tx_base),
                         fontSize = 14.sp,
                         color = MaterialTheme.colorScheme.onSurfaceVariant
                     )
@@ -446,7 +460,7 @@ private fun ExpandedRadioControl(
                         onClick = { onAction(RadarAction.SetCtcssTone(null)) },
                         label = {
                             Text(
-                                text = "Off",
+                                text = stringResource(R.string.radar_off),
                                 fontSize = 12.sp,
                                 textAlign = TextAlign.Center,
                                 modifier = Modifier.fillMaxWidth()
@@ -478,19 +492,19 @@ private fun ExpandedRadioControl(
             if (!radioControl.txPanel.isConnected && !radioControl.rxPanel.isConnected) {
                 CardButton(
                     onClick = { onAction(RadarAction.ConnectRadios) },
-                    text = "Connect",
+                    text = stringResource(R.string.radar_connect),
                     modifier = Modifier.weight(1f)
                 )
             } else {
                 CardButton(
                     onClick = { onAction(RadarAction.DisconnectRadios) },
-                    text = "Disconnect",
+                    text = stringResource(R.string.radar_disconnect),
                     modifier = Modifier.weight(1f)
                 )
             }
             CardButton(
                 onClick = { onAction(RadarAction.ToggleTracking) },
-                text = if (radioControl.isTracking) "Stop" else "Track",
+                text = if (radioControl.isTracking) stringResource(R.string.radar_stop) else stringResource(R.string.radar_track),
                 modifier = Modifier.weight(1f)
             )
         }
@@ -504,108 +518,362 @@ private fun ExpandedRadioControl(
     }
 }
 
+private enum class EditedField { TX, PASSBAND, RX }
+
 @Composable
-private fun DopplerCalculatorPanel(
+private fun DopplerFrequencyCalculator(
     transponder: SatRadio,
     orbitalPos: OrbitalPos?,
+    offsetKHz: String = "",
+    onOffsetChange: (String) -> Unit = {},
     modifier: Modifier = Modifier
 ) {
     if (orbitalPos == null || !DopplerFrequencyCalculator.isLinearTransponder(transponder)) return
 
-    var txInputMHz by remember(transponder.uuid) { mutableStateOf("") }
-    var rxInputMHz by remember(transponder.uuid) { mutableStateOf("") }
-    var offsetKHz by remember(transponder.uuid) { mutableStateOf("") }
-    var lastEditedBy by remember(transponder.uuid) { mutableStateOf(EditedField.TX) }
+    var lastEditedField by remember { mutableStateOf(EditedField.TX) }
+    var txFrequencyHz by remember { mutableStateOf(0L) }
+    var rxFrequencyHz by remember { mutableStateOf(0L) }
+    var passbandPosition by remember { mutableStateOf(0.5f) }
+    var stepSizeKHz by remember { mutableIntStateOf(1) }
 
-    fun offsetHz(text: String): Long = text.toDoubleOrNull()?.let { (it * 1000).toLong() } ?: 0L
-    fun formatHz(hz: Long): String = String.format(Locale.ENGLISH, "%.6f", hz / 1_000_000.0)
-    fun mhzToHz(text: String): Long? = text.toDoubleOrNull()
-        ?.takeIf { it > 0.0 }
-        ?.let { (it * 1_000_000).toLong() }
+    val offsetHz = offsetKHz.toDoubleOrNull()?.let { it * 1000 }?.toLong() ?: 0L
 
-    fun calculateDownlink(txText: String, offsetText: String): String? {
-        val txHz = mhzToHz(txText) ?: return null
-        return DopplerFrequencyCalculator.computeDownlinkFromUplinkWithOffset(
-            uplinkHz = txHz,
-            transponder = transponder,
-            orbitalPos = orbitalPos,
-            offsetHz = offsetHz(offsetText)
-        )?.let(::formatHz)
+    val txLow = transponder.uplinkLow ?: return
+    val txHigh = transponder.uplinkHigh ?: return
+    val rxLow = transponder.downlinkLow ?: return
+    val rxHigh = transponder.downlinkHigh ?: return
+    val txRange = txHigh - txLow
+    val rxRange = rxHigh - rxLow
+    if (txRange <= 0L || rxRange <= 0L) return
+
+    // 原始转发器值（逆转多普勒），用于 passband 映射计算
+    val rawTxLow = orbitalPos.getDownlinkFreq(txLow)
+    val rawTxHigh = orbitalPos.getDownlinkFreq(txHigh)
+    val rawRxLow = orbitalPos.getUplinkFreq(rxLow)
+    val rawRxHigh = orbitalPos.getUplinkFreq(rxHigh)
+    val rawTxRange = rawTxHigh - rawTxLow
+    val rawRxRange = rawRxHigh - rawRxLow
+    val rawTransponder = transponder.copy(
+        uplinkLow = rawTxLow, uplinkHigh = rawTxHigh,
+        downlinkLow = rawRxLow, downlinkHigh = rawRxHigh
+    )
+
+    // 初始化
+    LaunchedEffect(Unit) {
+        if (txFrequencyHz == 0L) {
+            txFrequencyHz = txLow + txRange / 2
+            rxFrequencyHz = DopplerFrequencyCalculator.computeDownlinkFromUplinkWithOffset(
+                txFrequencyHz, rawTransponder, orbitalPos, offsetHz
+            ) ?: (rxLow + rxRange / 2)
+        }
     }
 
-    fun calculateUplink(rxText: String, offsetText: String): String? {
-        val rxHz = mhzToHz(rxText) ?: return null
-        return DopplerFrequencyCalculator.computeUplinkFromDownlinkWithOffset(
-            downlinkHz = rxHz,
-            transponder = transponder,
-            orbitalPos = orbitalPos,
-            offsetHz = offsetHz(offsetText)
-        )?.let(::formatHz)
+    // 实时重算：卫星移动时，锚点侧不变，重算另一侧
+    LaunchedEffect(orbitalPos) {
+        if (lastEditedField == EditedField.TX) {
+            // TX 是锚点，不变；重算 RX
+            rxFrequencyHz = DopplerFrequencyCalculator.computeDownlinkFromUplinkWithOffset(
+                txFrequencyHz, rawTransponder, orbitalPos, offsetHz
+            ) ?: rxFrequencyHz
+        } else if (lastEditedField == EditedField.RX) {
+            // RX 是锚点，不变；重算 TX
+            txFrequencyHz = DopplerFrequencyCalculator.computeUplinkFromDownlinkWithOffset(
+                rxFrequencyHz, rawTransponder, orbitalPos, offsetHz
+            ) ?: txFrequencyHz
+        } else if (lastEditedField == EditedField.PASSBAND) {
+            // 相对位置不变（passbandPosition），TX 用地面频率，RX 经 Transceiver 完整路径计算
+            txFrequencyHz = txLow + (passbandPosition * txRange).toLong()
+            rxFrequencyHz = DopplerFrequencyCalculator.computeDownlinkFromUplinkWithOffset(
+                txFrequencyHz, rawTransponder, orbitalPos, offsetHz
+            ) ?: rxFrequencyHz
+        }
     }
 
-    LaunchedEffect(orbitalPos, transponder.uuid) {
-        if (lastEditedBy == EditedField.TX) {
-            calculateDownlink(txInputMHz, offsetKHz)?.let { rxInputMHz = it }
-        } else {
-            calculateUplink(rxInputMHz, offsetKHz)?.let { txInputMHz = it }
+    val txSliderValue = if (lastEditedField == EditedField.PASSBAND) {
+        passbandPosition
+    } else {
+        ((txFrequencyHz - txLow).toFloat() / txRange).coerceIn(0f, 1f)
+    }
+    val rxSliderValue = if (lastEditedField == EditedField.PASSBAND) {
+        ((rxFrequencyHz - rxLow).toFloat() / rxRange).coerceIn(0f, 1f)
+    } else {
+        ((rxFrequencyHz - rxLow).toFloat() / rxRange).coerceIn(0f, 1f)
+    }
+
+    fun updateTx(newTxHz: Long) {
+        when (lastEditedField) {
+            EditedField.PASSBAND -> {
+                // Passband 模式：滑块位置 → passbandPosition → 地面频率，RX 经 Transceiver 计算
+                val pos = ((newTxHz - txLow).toFloat() / txRange).coerceIn(0f, 1f)
+                passbandPosition = pos
+                txFrequencyHz = txLow + (pos * txRange).toLong()
+                rxFrequencyHz = DopplerFrequencyCalculator.computeDownlinkFromUplinkWithOffset(
+                    txFrequencyHz, rawTransponder, orbitalPos, offsetHz
+                ) ?: rxFrequencyHz
+            }
+            else -> {
+                txFrequencyHz = newTxHz.coerceIn(txLow, txHigh)
+                rxFrequencyHz = DopplerFrequencyCalculator.computeDownlinkFromUplinkWithOffset(
+                    txFrequencyHz, rawTransponder, orbitalPos, offsetHz
+                ) ?: rxFrequencyHz
+            }
+        }
+    }
+
+    fun updateRx(newRxHz: Long) {
+        when (lastEditedField) {
+            EditedField.PASSBAND -> {
+                // Passband 模式：从 RX 反推 TX 位置，TX 用地面频率
+                val pos = ((newRxHz - rxLow).toFloat() / rxRange).coerceIn(0f, 1f)
+                val txFromRx = TransponderMapper.mapDownlinkToUplink(newRxHz, rawTransponder)
+                passbandPosition = if (txFromRx != null) {
+                    ((txFromRx - rawTxLow).toFloat() / rawTxRange).coerceIn(0f, 1f)
+                } else pos
+                txFrequencyHz = txLow + (passbandPosition * txRange).toLong()
+                rxFrequencyHz = DopplerFrequencyCalculator.computeDownlinkFromUplinkWithOffset(
+                    txFrequencyHz, rawTransponder, orbitalPos, offsetHz
+                ) ?: rxFrequencyHz
+            }
+            else -> {
+                rxFrequencyHz = newRxHz.coerceIn(rxLow, rxHigh)
+                txFrequencyHz = DopplerFrequencyCalculator.computeUplinkFromDownlinkWithOffset(
+                    rxFrequencyHz, rawTransponder, orbitalPos, offsetHz
+                ) ?: txFrequencyHz
+            }
         }
     }
 
     Column(
-        modifier = modifier,
-        verticalArrangement = Arrangement.spacedBy(8.dp)
+        modifier = modifier.fillMaxWidth().padding(top = 16.dp),
+        verticalArrangement = Arrangement.spacedBy(12.dp)
     ) {
-        OutlinedTextField(
-            value = offsetKHz,
-            onValueChange = { newValue ->
-                offsetKHz = newValue
-                if (lastEditedBy == EditedField.TX) {
-                    calculateDownlink(txInputMHz, newValue)?.let { rxInputMHz = it }
-                } else {
-                    calculateUplink(rxInputMHz, newValue)?.let { txInputMHz = it }
+            Row(
+                modifier = Modifier.fillMaxWidth().height(IntrinsicSize.Min),
+                verticalAlignment = Alignment.CenterVertically,
+                horizontalArrangement = Arrangement.spacedBy(6.dp)
+            ) {
+                // 左半边: TX + RX 按钮
+                Row(
+                    modifier = Modifier.weight(1f),
+                    horizontalArrangement = Arrangement.spacedBy(4.dp),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    FilterChip(
+                        selected = lastEditedField == EditedField.TX,
+                        onClick = {
+                            when (lastEditedField) {
+                                EditedField.TX -> {
+                                    passbandPosition = ((txFrequencyHz - txLow).toFloat() / txRange).coerceIn(0f, 1f)
+                                    lastEditedField = EditedField.PASSBAND
+                                    rxFrequencyHz = DopplerFrequencyCalculator.computeDownlinkFromUplinkWithOffset(
+                                        txFrequencyHz, rawTransponder, orbitalPos, offsetHz
+                                    ) ?: rxFrequencyHz
+                                }
+                                EditedField.PASSBAND -> { lastEditedField = EditedField.TX }
+                                else -> { lastEditedField = EditedField.TX }
+                            }
+                        },
+                        label = {
+                            Text("TX", fontSize = 13.sp, textAlign = TextAlign.Center,
+                                modifier = Modifier.fillMaxWidth())
+                        },
+                        modifier = Modifier.weight(1f).fillMaxHeight()
+                    )
+                    FilterChip(
+                        selected = lastEditedField == EditedField.RX,
+                        onClick = {
+                            when (lastEditedField) {
+                                EditedField.RX -> {
+                                    txFrequencyHz = DopplerFrequencyCalculator.computeUplinkFromDownlinkWithOffset(
+                                        rxFrequencyHz, rawTransponder, orbitalPos, offsetHz
+                                    ) ?: txFrequencyHz
+                                    passbandPosition = ((txFrequencyHz - txLow).toFloat() / txRange).coerceIn(0f, 1f)
+                                    lastEditedField = EditedField.PASSBAND
+                                }
+                                EditedField.PASSBAND -> {
+                                    lastEditedField = EditedField.RX
+                                    txFrequencyHz = DopplerFrequencyCalculator.computeUplinkFromDownlinkWithOffset(
+                                        rxFrequencyHz, rawTransponder, orbitalPos, offsetHz
+                                    ) ?: txFrequencyHz
+                                }
+                                else -> { lastEditedField = EditedField.RX }
+                            }
+                        },
+                        label = {
+                            Text("RX", fontSize = 13.sp, textAlign = TextAlign.Center,
+                                modifier = Modifier.fillMaxWidth())
+                        },
+                        modifier = Modifier.weight(1f).fillMaxHeight()
+                    )
                 }
-            },
-            label = { Text(stringResource(R.string.radar_doppler_offset_hint)) },
-            singleLine = true,
-            keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Text),
-            modifier = Modifier.fillMaxWidth()
-        )
+                // 右半边: Offset 输入框（带细线边框）
+                Box(
+                    modifier = Modifier
+                        .weight(1f)
+                        .height(48.dp)
+                        .border(1.dp, MaterialTheme.colorScheme.outline, MaterialTheme.shapes.small),
+                    contentAlignment = Alignment.Center
+                ) {
+                    BasicTextField(
+                        value = offsetKHz,
+                        onValueChange = onOffsetChange,
+                        singleLine = true,
+                        textStyle = TextStyle(
+                            fontSize = 16.sp,
+                            textAlign = TextAlign.Center,
+                            color = MaterialTheme.colorScheme.onSurface
+                        ),
+                        decorationBox = { innerTextField ->
+                            if (offsetKHz.isEmpty()) {
+                                Text(
+                                    text = stringResource(R.string.radar_doppler_offset_hint),
+                                    fontSize = 16.sp,
+                                    color = MaterialTheme.colorScheme.onSurfaceVariant
+                                )
+                            }
+                            innerTextField()
+                        }
+                    )
+                }
+            }
 
-        Row(
-            horizontalArrangement = Arrangement.spacedBy(8.dp),
-            modifier = Modifier.fillMaxWidth()
-        ) {
-            OutlinedTextField(
-                value = txInputMHz,
-                onValueChange = { newValue ->
-                    txInputMHz = newValue
-                    lastEditedBy = EditedField.TX
-                    rxInputMHz = calculateDownlink(newValue, offsetKHz) ?: if (newValue.isEmpty()) "" else rxInputMHz
-                },
-                label = { Text(stringResource(R.string.radar_doppler_tx_hint)) },
-                singleLine = true,
-                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Decimal),
-                modifier = Modifier.weight(1f)
+            // TX 行
+            Column(modifier = Modifier.fillMaxWidth()) {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    OutlinedButton(
+                        onClick = { updateTx(txFrequencyHz - stepSizeKHz * 1000L) },
+                        modifier = Modifier.width(32.dp).height(28.dp),
+                        contentPadding = PaddingValues(0.dp),
+                        shape = MaterialTheme.shapes.extraSmall
+                    ) { Text("−", fontSize = 14.sp) }
+
+                    Slider(
+                        value = txSliderValue,
+                        onValueChange = { norm ->
+                            val rawFreq = txLow + (txRange * norm).toLong()
+                            val snapped = ((rawFreq + 500) / 1000L) * 1000L
+                            updateTx(snapped.coerceIn(txLow, txHigh))
+                        },
+                        valueRange = 0f..1f,
+                        modifier = Modifier.weight(1f).height(20.dp).padding(horizontal = 4.dp)
+                    )
+
+                    OutlinedButton(
+                        onClick = { updateTx(txFrequencyHz + stepSizeKHz * 1000L) },
+                        modifier = Modifier.width(32.dp).height(28.dp),
+                        contentPadding = PaddingValues(0.dp),
+                        shape = MaterialTheme.shapes.extraSmall
+                    ) { Text("+", fontSize = 14.sp) }
+                }
+                Row(
+                    modifier = Modifier.fillMaxWidth().padding(horizontal = 4.dp),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        text = String.format(Locale.ENGLISH, "%.4f", txLow / 1_000_000.0),
+                        fontSize = 12.sp,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        modifier = Modifier.weight(1f)
+                    )
+                    Row(
+                        verticalAlignment = Alignment.CenterVertically,
+                        horizontalArrangement = Arrangement.Center
+                    ) {
+                        Text(
+                            text = String.format(Locale.ENGLISH, "%.6f", txFrequencyHz / 1_000_000.0),
+                            fontSize = 20.sp,
+                            fontWeight = FontWeight.Bold,
+                            color = MaterialTheme.colorScheme.primary
+                        )
+                        Text(
+                            text = " MHz",
+                            fontSize = 20.sp,
+                            fontWeight = FontWeight.Bold,
+                            color = MaterialTheme.colorScheme.primary
+                        )
+                    }
+                    Text(
+                        text = String.format(Locale.ENGLISH, "%.4f", txHigh / 1_000_000.0),
+                        fontSize = 12.sp,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        modifier = Modifier.weight(1f),
+                        textAlign = TextAlign.End
+                    )
+                }
+            }
+
+            HorizontalDivider(
+                thickness = 0.5.dp,
+                color = MaterialTheme.colorScheme.outline.copy(alpha = 0.3f)
             )
 
-            OutlinedTextField(
-                value = rxInputMHz,
-                onValueChange = { newValue ->
-                    rxInputMHz = newValue
-                    lastEditedBy = EditedField.RX
-                    txInputMHz = calculateUplink(newValue, offsetKHz) ?: if (newValue.isEmpty()) "" else txInputMHz
-                },
-                label = { Text(stringResource(R.string.radar_doppler_rx_hint)) },
-                singleLine = true,
-                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Decimal),
-                modifier = Modifier.weight(1f)
-            )
+            // RX 行
+            Column(modifier = Modifier.fillMaxWidth()) {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    OutlinedButton(
+                        onClick = { updateRx(rxFrequencyHz - stepSizeKHz * 1000L) },
+                        modifier = Modifier.width(32.dp).height(28.dp),
+                        contentPadding = PaddingValues(0.dp),
+                        shape = MaterialTheme.shapes.extraSmall
+                    ) { Text("−", fontSize = 14.sp) }
+
+                    Slider(
+                        value = rxSliderValue,
+                        onValueChange = { norm ->
+                            val rawFreq = rxLow + (rxRange * norm).toLong()
+                            val snapped = ((rawFreq + 500) / 1000L) * 1000L
+                            updateRx(snapped.coerceIn(rxLow, rxHigh))
+                        },
+                        valueRange = 0f..1f,
+                        modifier = Modifier.weight(1f).height(20.dp).padding(horizontal = 4.dp)
+                    )
+
+                    OutlinedButton(
+                        onClick = { updateRx(rxFrequencyHz + stepSizeKHz * 1000L) },
+                        modifier = Modifier.width(32.dp).height(28.dp),
+                        contentPadding = PaddingValues(0.dp),
+                        shape = MaterialTheme.shapes.extraSmall
+                    ) { Text("+", fontSize = 14.sp) }
+                }
+                Row(
+                    modifier = Modifier.fillMaxWidth().padding(horizontal = 4.dp),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        text = String.format(Locale.ENGLISH, "%.4f", rxLow / 1_000_000.0),
+                        fontSize = 12.sp,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        modifier = Modifier.weight(1f)
+                    )
+                    Row(
+                        verticalAlignment = Alignment.CenterVertically,
+                        horizontalArrangement = Arrangement.Center
+                    ) {
+                        Text(
+                            text = String.format(Locale.ENGLISH, "%.6f", rxFrequencyHz / 1_000_000.0),
+                            fontSize = 20.sp,
+                            fontWeight = FontWeight.Bold,
+                            color = MaterialTheme.colorScheme.primary
+                        )
+                        Text(
+                            text = " MHz",
+                            fontSize = 20.sp,
+                            fontWeight = FontWeight.Bold,
+                            color = MaterialTheme.colorScheme.primary
+                        )
+                    }
+                    Text(
+                        text = String.format(Locale.ENGLISH, "%.4f", rxHigh / 1_000_000.0),
+                        fontSize = 12.sp,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        modifier = Modifier.weight(1f),
+                        textAlign = TextAlign.End
+                    )
+                }
+            }
         }
-    }
 }
 
-private enum class EditedField { TX, RX }
-
 @Composable
 private fun FrequencyText(frequency: Long?, modifier: Modifier = Modifier) {
     val text = frequency?.let {
@@ -629,3 +897,4 @@ private fun transceiverTitle(radio: SatRadio): String {
 
 private val FREQ_ADJUSTMENTS =
     listOf(-10_000L to "-10k", -1_000L to "-1k", -100L to "-100", 100L to "+100", 1_000L to "+1k", 10_000L to "+10k")
+

feature/satellites/src/main/java/com/rtbishop/look4sat/feature/satellites/SatellitesDialog.kt

@@ -39,9 +39,9 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
+import com.rtbishop.look4sat.core.presentation.ConfirmDialog
 import com.rtbishop.look4sat.core.presentation.MainTheme
 import com.rtbishop.look4sat.core.presentation.R
-import com.rtbishop.look4sat.core.presentation.SharedDialog
 
 @Preview(showBackground = true)
 @Composable
@@ -59,7 +59,7 @@ internal fun MultiModesDialog(
         selected.value = if (mode in selected.value) selected.value - mode else selected.value + mode
     }
     val onAccept = { accept(selected.value.toList()) }
-    SharedDialog(title = stringResource(R.string.sat_type_title), onCancel = cancel, onAccept = onAccept) {
+    ConfirmDialog(title = stringResource(R.string.sat_type_title), onCancel = cancel, onAccept = onAccept) {
         LazyVerticalGrid(
             columns = GridCells.Adaptive(240.dp),
             modifier = Modifier

feature/satellites/src/main/java/com/rtbishop/look4sat/feature/satellites/SatellitesScreen.kt

@@ -62,10 +62,11 @@ import com.rtbishop.look4sat.core.domain.repository.IContainerProvider
 import com.rtbishop.look4sat.core.presentation.CardLoadingIndicator
 import com.rtbishop.look4sat.core.presentation.EmptyListCard
 import com.rtbishop.look4sat.core.presentation.IconCard
+import com.rtbishop.look4sat.core.presentation.InfoDialog
+import com.rtbishop.look4sat.core.presentation.LocalSpacing
 import com.rtbishop.look4sat.core.presentation.MainTheme
 import com.rtbishop.look4sat.core.presentation.PrimaryIconCard
 import com.rtbishop.look4sat.core.presentation.R
-import com.rtbishop.look4sat.core.presentation.SharedDialog
 import com.rtbishop.look4sat.core.presentation.TopBar
 import com.rtbishop.look4sat.core.presentation.infiniteMarquee
 import com.rtbishop.look4sat.core.presentation.isVerticalLayout
@@ -96,17 +97,16 @@ private fun SatellitesScreen(
     }
     if (uiState.shouldSeeWarning) {
         val dismiss = { onAction(SatellitesAction.DismissWarning) }
-        SharedDialog(
+        InfoDialog(
             title = stringResource(R.string.sat_warning_title),
-            onDismissRequest = dismiss,
-            onAccept = dismiss,
-            titleFontSize = 18
-        ) { padding ->
+            onDismiss = dismiss,
+            onAccept = dismiss
+        ) {
             Text(
                 text = stringResource(R.string.sat_warning_message),
                 fontSize = 16.sp,
                 color = MaterialTheme.colorScheme.onSurface,
-                modifier = Modifier.padding(horizontal = padding)
+                modifier = Modifier.padding(horizontal = LocalSpacing.current.large)
             )
             Spacer(modifier = Modifier.height(0.dp))
         }

feature/settings/src/main/java/com/rtbishop/look4sat/feature/settings/SettingsDialog.kt

@@ -17,26 +17,44 @@
  */
 package com.rtbishop.look4sat.feature.settings
 
+import androidx.compose.animation.core.FastOutSlowInEasing
+import androidx.compose.animation.core.tween
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.FlowRow
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.LazyListScope
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.material3.Checkbox
 import androidx.compose.material3.FilterChip
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableLongStateOf
 import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.snapshots.SnapshotStateList
+import androidx.compose.runtime.toMutableStateList
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
@@ -45,11 +63,20 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.rtbishop.look4sat.core.domain.model.RCSettings
 import com.rtbishop.look4sat.core.domain.model.RadioControlSettings
+import com.rtbishop.look4sat.core.domain.model.Constants
+import com.rtbishop.look4sat.core.domain.source.NetworkResult
+import com.rtbishop.look4sat.core.domain.source.Sources
 import com.rtbishop.look4sat.core.presentation.CardButton
+import com.rtbishop.look4sat.core.presentation.DragReorderState
+import com.rtbishop.look4sat.core.presentation.IconCard
 import com.rtbishop.look4sat.core.presentation.LocalSpacing
 import com.rtbishop.look4sat.core.presentation.MainTheme
 import com.rtbishop.look4sat.core.presentation.R
-import com.rtbishop.look4sat.core.presentation.SharedDialog
+import com.rtbishop.look4sat.core.presentation.ConfirmDialog
+import com.rtbishop.look4sat.core.presentation.dragHandle
+import com.rtbishop.look4sat.core.presentation.dragLift
+import com.rtbishop.look4sat.core.presentation.rememberDragReorderState
+import com.rtbishop.look4sat.core.presentation.rememberDragRowState
 
 @Preview(showBackground = true)
 @Composable
@@ -63,7 +90,7 @@ fun PositionDialog(lat: Double, lon: Double, dismiss: () -> Unit, save: (Double,
     val lonValue = rememberSaveable { mutableStateOf(lon.toString()) }
     val titleText = stringResource(id = R.string.prefs_station_title)
     val onAccept = { saveValues(latValue.value, lonValue.value, save).also { dismiss() } }
-    SharedDialog(title = titleText, onCancel = dismiss, onAccept = onAccept) {
+    ConfirmDialog(title = titleText, onCancel = dismiss, onAccept = onAccept) {
         Row(
             horizontalArrangement = Arrangement.spacedBy(6.dp),
             modifier = Modifier
@@ -107,7 +134,7 @@ private fun LocatorDialogPreview() {
 fun LocatorDialog(qthLocator: String, dismiss: () -> Unit, save: (String) -> Unit) {
     val locator = rememberSaveable { mutableStateOf(qthLocator) }
     val onAccept = { save(locator.value).also { dismiss() } }
-    SharedDialog(
+    ConfirmDialog(
         title = stringResource(R.string.prefs_locator_title),
         onCancel = dismiss,
         onAccept = onAccept
@@ -129,11 +156,19 @@ fun LocatorDialog(qthLocator: String, dismiss: () -> Unit, save: (String) -> Uni
 private fun TransceiversDialogPreview() {
     MainTheme {
         DataSourcesDialog(
-            useCustomTle = true,
-            useCustomTransceivers = true,
-            tleUrl = "https://example.com/tle.txt",
-            transceiversUrl = "https://example.com/tx.json",
-            requestCustomSourcesPermission = { onGranted, _ -> onGranted() },
+            satelliteUrls = listOf(
+                "celestrak.org/NORAD/elements/gp.php?GROUP=active&FORMAT=csv",
+                "amsat.org/tle/current/nasabare.txt"
+            ),
+            transceiversUrls = listOf(
+                "db.satnogs.org/api/transmitters/?format=json&status=active"
+            ),
+            satelliteEnabled = listOf(true, false),
+            transceiversEnabled = listOf(true),
+            statusCodes = mapOf(
+                "celestrak.org/NORAD/elements/gp.php?GROUP=active&FORMAT=csv" to 200,
+                "amsat.org/tle/current/nasabare.txt" to 404
+            ),
             onImportTle = {},
             onImportTransceivers = {},
             onDismiss = {},
@@ -142,118 +177,254 @@ private fun TransceiversDialogPreview() {
     }
 }
 
+/**
+ * Single source of truth for one data-source row: url, enabled flag and stable id all live
+ * together so a reorder, a toggle or an edit is a single list mutation instead of several parallel
+ * lists/maps having to stay in sync (which used to fan out into extra recompositions).
+ */
+private data class SourceEntry(val id: Long, val url: String, val enabled: Boolean = true)
+
 @Composable
 fun DataSourcesDialog(
-    useCustomTle: Boolean,
-    useCustomTransceivers: Boolean,
-    tleUrl: String,
-    transceiversUrl: String,
-    requestCustomSourcesPermission: (onGranted: () -> Unit, onDenied: () -> Unit) -> Unit,
+    satelliteUrls: List<String>,
+    transceiversUrls: List<String>,
+    satelliteEnabled: List<Boolean>,
+    transceiversEnabled: List<Boolean>,
+    statusCodes: Map<String, Int>,
     onImportTle: () -> Unit,
     onImportTransceivers: () -> Unit,
     onDismiss: () -> Unit,
-    onSave: (Boolean, Boolean, String, String) -> Unit
+    onSave: (List<String>, List<String>, List<Boolean>, List<Boolean>) -> Unit
 ) {
     val padding = LocalSpacing.current.large
-    val isEnabledCustomTle = rememberSaveable { mutableStateOf(useCustomTle) }
-    val isEnabledCustomTransceivers = rememberSaveable { mutableStateOf(useCustomTransceivers) }
-    val urlTle = rememberSaveable { mutableStateOf(tleUrl) }
-    val urlTransceivers = rememberSaveable { mutableStateOf(transceiversUrl) }
-    val onAccept = {
-        onSave(
-            isEnabledCustomTle.value,
-            isEnabledCustomTransceivers.value,
-            urlTle.value,
-            urlTransceivers.value
-        )
-        onDismiss()
+    // Use stable Long IDs to avoid key collisions (e.g. multiple empty "" entries).
+    val nextId = remember { mutableLongStateOf((satelliteUrls.size + transceiversUrls.size).toLong()) }
+    val satEntries = remember {
+        satelliteUrls.mapIndexed { i, url ->
+            SourceEntry(i.toLong(), url, satelliteEnabled.getOrElse(i) { true })
+        }.toMutableStateList()
     }
-    val onCancel = { onDismiss() }
-    SharedDialog(
-        title = stringResource(id = R.string.prefs_data_sources_title),
-        onCancel = onCancel,
-        onAccept = onAccept,
-    ) {
-        Column(modifier = Modifier.padding(horizontal = padding)) {
-            Row(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
-                CardButton(
-                    onClick = {
-                        onImportTle()
-                        onDismiss()
-                    },
-                    text = "TLE/3LE (.txt)\nOMM (.csv)",
-                    modifier = Modifier.weight(1f)
-                )
-                CardButton(
-                    onClick = {
-                        onImportTransceivers()
-                        onDismiss()
-                    },
-                    text = "Transceivers\nSatNOGS (.json)",
-                    modifier = Modifier.weight(1f)
-                )
-            }
-            Spacer(modifier = Modifier.height(6.dp))
-            Row(
-                horizontalArrangement = Arrangement.SpaceBetween,
-                verticalAlignment = Alignment.CenterVertically,
-                modifier = Modifier.fillMaxWidth()
-            ) {
-                Text(text = stringResource(id = R.string.prefs_data_sources_tle_switch))
-                Switch(
-                    checked = isEnabledCustomTle.value,
-                    onCheckedChange = { enabled ->
-                        if (!enabled) {
-                            isEnabledCustomTle.value = false
-                        } else {
-                            requestCustomSourcesPermission(
-                                { isEnabledCustomTle.value = true },
-                                { isEnabledCustomTle.value = false }
-                            )
-                        }
-                    }
-                )
-            }
-            OutlinedTextField(
-                value = urlTle.value,
-                onValueChange = { urlTle.value = it },
-                label = { Text(text = stringResource(id = R.string.prefs_data_sources_url_title)) },
-                singleLine = true,
-                modifier = Modifier.fillMaxWidth(),
-                enabled = isEnabledCustomTle.value,
+    val txEntries = remember {
+        transceiversUrls.mapIndexed { i, url ->
+            SourceEntry((satelliteUrls.size + i).toLong(), url, transceiversEnabled.getOrElse(i) { true })
+        }.toMutableStateList()
+    }
+    val listState = rememberLazyListState()
+    val dragState = rememberDragReorderState(listState)
+    val onRestoreSatDefaults = {
+        satEntries.clear()
+        satEntries.addAll(Sources.satelliteDataUrls.map { url -> SourceEntry(nextId.longValue++, url) })
+        Unit
+    }
+    val onRestoreTxDefaults = {
+        txEntries.clear()
+        txEntries.addAll(Sources.transceiversDataUrls.map { url -> SourceEntry(nextId.longValue++, url) })
+        Unit
+    }
+    val onAccept = {
+        val satFiltered = satEntries.filter { it.url.isNotBlank() }
+        val txFiltered = txEntries.filter { it.url.isNotBlank() }
+        try {
+            onSave(
+                satFiltered.map { it.url },
+                txFiltered.map { it.url },
+                satFiltered.map { it.enabled },
+                txFiltered.map { it.enabled }
             )
-            Spacer(modifier = Modifier.height(6.dp))
-            Row(
-                horizontalArrangement = Arrangement.SpaceBetween,
-                verticalAlignment = Alignment.CenterVertically,
-                modifier = Modifier.fillMaxWidth()
-            ) {
-                Text(text = stringResource(id = R.string.prefs_data_sources_transceivers_switch))
-                Switch(
-                    checked = isEnabledCustomTransceivers.value,
-                    onCheckedChange = { enabled ->
-                        if (!enabled) {
-                            isEnabledCustomTransceivers.value = false
-                        } else {
-                            requestCustomSourcesPermission(
-                                { isEnabledCustomTransceivers.value = true },
-                                { isEnabledCustomTransceivers.value = false }
-                            )
-                        }
-                    }
-                )
-            }
-            OutlinedTextField(
-                value = urlTransceivers.value,
-                onValueChange = { urlTransceivers.value = it },
-                label = { Text(text = stringResource(id = R.string.prefs_data_sources_url_title)) },
-                singleLine = true,
-                modifier = Modifier.fillMaxWidth(),
-                enabled = isEnabledCustomTransceivers.value,
-            )
-            Spacer(modifier = Modifier.height(12.dp))
+        } finally {
+            onDismiss()
         }
     }
+    val satTitle = stringResource(R.string.prefs_data_sources_sat_title)
+    val satHint = stringResource(R.string.prefs_data_sources_sat_hint)
+    val transceiversTitle = stringResource(R.string.prefs_data_sources_transceivers_title)
+    val transceiversHint = stringResource(R.string.prefs_data_sources_transceivers_hint)
+    ConfirmDialog(
+        title = stringResource(id = R.string.prefs_data_sources_title),
+        onCancel = onDismiss,
+        onAccept = onAccept,
+    ) {
+        LazyColumn(
+            state = listState,
+            modifier = Modifier
+                .fillMaxHeight(0.84f)
+                .padding(horizontal = padding),
+            verticalArrangement = Arrangement.spacedBy(4.dp),
+            contentPadding = PaddingValues(vertical = 0.dp)
+        ) {
+            item {
+                Row(
+                    horizontalArrangement = Arrangement.spacedBy(6.dp),
+                    modifier = Modifier.fillMaxWidth()
+                ) {
+                    CardButton(
+                        onClick = { onImportTle(); onDismiss() },
+                        text = "TLE/3LE (.txt)\nOMM (.csv)",
+                        modifier = Modifier.weight(1f)
+                    )
+                    CardButton(
+                        onClick = { onImportTransceivers(); onDismiss() },
+                        text = "Transceivers\nSatNOGS (.json)",
+                        modifier = Modifier.weight(1f)
+                    )
+                }
+            }
+            sourceSection(
+                sectionKey = "sat",
+                label = satTitle,
+                hint = satHint,
+                entries = satEntries,
+                dragState = dragState,
+                statusCodes = statusCodes,
+                onAdd = { satEntries.add(SourceEntry(nextId.longValue++, "")) },
+                onRestore = onRestoreSatDefaults,
+                onMove = { from, to -> satEntries.add(to, satEntries.removeAt(from)) },
+                onRemove = { i -> satEntries.removeAt(i) },
+                onToggle = { i -> satEntries[i] = satEntries[i].copy(enabled = !satEntries[i].enabled) },
+                onUrlChange = { i, v -> satEntries[i] = satEntries[i].copy(url = v) }
+            )
+            sourceSection(
+                sectionKey = "tx",
+                label = transceiversTitle,
+                hint = transceiversHint,
+                entries = txEntries,
+                dragState = dragState,
+                statusCodes = statusCodes,
+                onAdd = { txEntries.add(SourceEntry(nextId.longValue++, "")) },
+                onRestore = onRestoreTxDefaults,
+                onMove = { from, to -> txEntries.add(to, txEntries.removeAt(from)) },
+                onRemove = { i -> txEntries.removeAt(i) },
+                onToggle = { i -> txEntries[i] = txEntries[i].copy(enabled = !txEntries[i].enabled) },
+                onUrlChange = { i, v -> txEntries[i] = txEntries[i].copy(url = v) }
+            )
+        }
+    }
+}
+
+private fun LazyListScope.sourceSection(
+    sectionKey: String,
+    label: String,
+    hint: String,
+    entries: SnapshotStateList<SourceEntry>,
+    dragState: DragReorderState,
+    statusCodes: Map<String, Int>,
+    onAdd: () -> Unit,
+    onRestore: () -> Unit,
+    onMove: (Int, Int) -> Unit,
+    onRemove: (Int) -> Unit,
+    onToggle: (Int) -> Unit,
+    onUrlChange: (Int, String) -> Unit
+) {
+    item {
+        Spacer(modifier = Modifier.height(6.dp))
+        Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxWidth()) {
+            Text(
+                text = label,
+                fontWeight = FontWeight.Medium,
+                color = MaterialTheme.colorScheme.primary,
+                modifier = Modifier.weight(1f)
+            )
+            IconCard(
+                action = onRestore,
+                resId = R.drawable.ic_restore,
+                containerColor = MaterialTheme.colorScheme.surfaceVariant
+            )
+            Spacer(modifier = Modifier.width(6.dp))
+            IconCard(
+                action = onAdd,
+                resId = R.drawable.ic_add,
+                containerColor = MaterialTheme.colorScheme.surfaceVariant
+            )
+        }
+        Text(
+            text = hint,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(top = 2.dp, bottom = 8.dp)
+        )
+    }
+    itemsIndexed(entries, key = { _, entry -> "$sectionKey-${entry.id}" }) { index, entry ->
+        val enabledTint = MaterialTheme.colorScheme.onSurfaceVariant
+        val rowState = rememberDragRowState(
+            dragState = dragState,
+            items = entries,
+            item = entry,
+            key = { "$sectionKey-${it.id}" },
+            onMove = onMove
+        )
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier
+                .fillMaxWidth()
+                .dragLift(isLifted = rowState.isLifted, translationY = rowState.translationY)
+                .animateItem(
+                    fadeInSpec = tween(durationMillis = 200),
+                    // The dragged row repositions instantly, while its neighbors smoothly
+                    // slide out of the way (the "squeeze" effect).
+                    placementSpec = if (rowState.isDragging) {
+                        tween(durationMillis = 0)
+                    } else {
+                        tween(durationMillis = 250, easing = FastOutSlowInEasing)
+                    },
+                    fadeOutSpec = tween(durationMillis = 200)
+                )
+        ) {
+            Icon(
+                painter = painterResource(R.drawable.ic_drag_handle),
+                contentDescription = null,
+                tint = enabledTint,
+                modifier = Modifier
+                    .padding(top = textFieldLabelOffset)
+                    .dragHandle(rowState)
+            )
+            Spacer(modifier = Modifier.width(12.dp))
+            OutlinedTextField(
+                value = entry.url,
+                onValueChange = { onUrlChange(index, it) },
+                label = {
+                    Row {
+                        Text("Source URL")
+                        statusCodes[entry.url]?.let { code ->
+                            Text(" - ${statusLabel(code)}", color = statusColor(code), fontSize = 12.sp)
+                        }
+                    }
+                },
+                trailingIcon = {
+                    IconButton(onClick = { onRemove(index) }) {
+                        Icon(
+                            painter = painterResource(R.drawable.ic_delete),
+                            contentDescription = null
+                        )
+                    }
+                },
+                singleLine = true,
+                enabled = entry.enabled,
+                modifier = Modifier.weight(1f)
+            )
+            Checkbox(
+                checked = entry.enabled,
+                onCheckedChange = { onToggle(index) },
+                modifier = Modifier.padding(top = textFieldLabelOffset)
+            )
+        }
+    }
+}
+
+/**
+ * Compensates for the visual weight of the [OutlinedTextField]'s floating label: the label
+ * pushes the perceived center of the field's content down a bit, so the drag handle and
+ * checkbox are nudged down by the same amount to stay visually centered on the input line.
+ */
+private val textFieldLabelOffset = 8.dp
+
+private fun statusLabel(code: Int): String = if (code == NetworkResult.CONNECTION_ERROR) "ERR" else code.toString()
+
+@Composable
+private fun statusColor(code: Int): Color = when (code) {
+    NetworkResult.CONNECTION_ERROR -> MaterialTheme.colorScheme.error
+    in 200..299 -> Color(0xFF66BB6A)
+    else -> MaterialTheme.colorScheme.error
 }
 
 @Preview(showBackground = true)
@@ -270,6 +441,7 @@ fun PreviewNetworkOutputDialog() {
                 frequencyAddress = "127.0.0.1",
                 frequencyPort = "4532",
                 frequencyFormat = $$"F $FREQ",
+                frequencyOffsetHz = 0L,
                 bluetoothRotatorState = false,
                 bluetoothRotatorFormat = $$"P $AZ $EL",
                 bluetoothRotatorName = "Default",
@@ -279,7 +451,7 @@ fun PreviewNetworkOutputDialog() {
                 bluetoothFrequencyFormat = $$"F $FREQ"
             ),
             onDismiss = {},
-            onSave = { _, _, _, _, _, _, _, _ -> }
+            onSave = { _, _, _, _, _, _, _, _, _ -> }
         )
     }
 }
@@ -290,7 +462,7 @@ fun NetworkOutputDialog(
     onDismiss: () -> Unit,
     onSave: (
         Boolean, String, String, String,
-        Boolean, String, String, String
+        Boolean, String, String, String, Long
     ) -> Unit
 ) {
     val padding = LocalSpacing.current.large
@@ -304,16 +476,19 @@ fun NetworkOutputDialog(
         mutableStateOf("${initialSettings.frequencyAddress}:${initialSettings.frequencyPort}")
     }
     val frequencyFormat = rememberSaveable { mutableStateOf(initialSettings.frequencyFormat) }
+    val frequencyOffsetHz = rememberSaveable { mutableStateOf(initialSettings.frequencyOffsetHz.toString()) }
     val onAccept = {
         val (rotIp, rotPort) = splitAddress(rotatorAddress.value)
         val (freqIp, freqPort) = splitAddress(frequencyAddress.value)
+        val offsetHz = (frequencyOffsetHz.value.trim().toLongOrNull() ?: 0L)
+            .coerceIn(Constants.FREQ_OFFSET_MIN_HZ, Constants.FREQ_OFFSET_MAX_HZ)
         onSave(
             rotatorState.value, rotIp, rotPort, rotatorFormat.value,
-            frequencyState.value, freqIp, freqPort, frequencyFormat.value
+            frequencyState.value, freqIp, freqPort, frequencyFormat.value, offsetHz
         )
         onDismiss()
     }
-    SharedDialog(
+    ConfirmDialog(
         title = stringResource(R.string.prefs_net_title),
         onCancel = onDismiss,
         onAccept = onAccept
@@ -342,6 +517,27 @@ fun NetworkOutputDialog(
                 onFormatChange = { frequencyFormat.value = it },
                 formatLabel = stringResource(R.string.prefs_net_frequency_format_hint)
             )
+            Spacer(modifier = Modifier.height(6.dp))
+            OutlinedTextField(
+                value = frequencyOffsetHz.value,
+                onValueChange = { frequencyOffsetHz.value = it },
+                singleLine = true,
+                label = { Text(stringResource(R.string.prefs_net_frequency_offset_hint)) },
+                supportingText = { Text(stringResource(R.string.prefs_net_frequency_offset_help)) },
+                trailingIcon = {
+                    IconButton(
+                        onClick = { frequencyOffsetHz.value = "0" },
+                        enabled = frequencyState.value && frequencyOffsetHz.value != "0"
+                    ) {
+                        Icon(
+                            painter = painterResource(R.drawable.ic_close),
+                            contentDescription = null
+                        )
+                    }
+                },
+                modifier = Modifier.fillMaxWidth(),
+                enabled = frequencyState.value
+            )
             Spacer(modifier = Modifier.height(12.dp))
         }
     }
@@ -370,6 +566,7 @@ fun PreviewBluetoothOutputDialog() {
                 frequencyAddress = "127.0.0.1",
                 frequencyPort = "4532",
                 frequencyFormat = $$"F $FREQ",
+                frequencyOffsetHz = 0L,
                 bluetoothRotatorState = false,
                 bluetoothRotatorFormat = $$"P $AZ $EL",
                 bluetoothRotatorName = "Default",
@@ -411,7 +608,7 @@ fun BluetoothOutputDialog(
         )
         onDismiss()
     }
-    SharedDialog(
+    ConfirmDialog(
         title = stringResource(R.string.prefs_bt_title),
         onCancel = onDismiss,
         onAccept = onAccept
@@ -538,7 +735,7 @@ fun RadioControlDialog(
         onDismiss()
     }
 
-    SharedDialog(
+    ConfirmDialog(
         title = stringResource(R.string.rc_settings_title),
         onCancel = onDismiss,
         onAccept = onAccept
@@ -595,7 +792,7 @@ fun RadioControlDialog(
                 modifier = Modifier.fillMaxWidth()
             ) {
                 Text(
-                    text = "Split mode (IC-705 only)",
+                    text = stringResource(R.string.settings_split_mode),
                     fontWeight = FontWeight.Medium,
                     color = splitModeLabelColor
                 )
@@ -635,7 +832,7 @@ fun RadioControlDialog(
 
             if (selectingFor.value.isNotBlank()) {
                 Text(
-                    text = "Paired Bluetooth Devices:",
+                    text = stringResource(R.string.settings_paired_devices),
                     fontWeight = FontWeight.Medium,
                     color = MaterialTheme.colorScheme.primary
                 )

feature/settings/src/main/java/com/rtbishop/look4sat/feature/settings/SettingsScreen.kt

@@ -64,6 +64,7 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.rtbishop.look4sat.core.domain.model.DataSourcesSettings
 import com.rtbishop.look4sat.core.domain.model.OtherSettings
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import com.rtbishop.look4sat.core.domain.repository.IContainerProvider
@@ -74,6 +75,7 @@ import com.rtbishop.look4sat.core.presentation.PrimaryIconCard
 import com.rtbishop.look4sat.core.presentation.R
 import com.rtbishop.look4sat.core.presentation.ScreenColumn
 import com.rtbishop.look4sat.core.presentation.TopBar
+import com.rtbishop.look4sat.core.presentation.WhatsNewDialog
 import com.rtbishop.look4sat.core.presentation.infiniteMarquee
 import com.rtbishop.look4sat.core.presentation.isVerticalLayout
 import java.text.SimpleDateFormat
@@ -92,22 +94,10 @@ fun SettingsDestination() {
 @Composable
 private fun SettingsScreen(uiState: SettingsState, onAction: (SettingsAction) -> Unit) {
     val dialogs = rememberDialogVisibility()
-    val pendingCustomSourcesGrant = remember { mutableStateOf<(() -> Unit)?>(null) }
-    val pendingCustomSourcesDeny = remember { mutableStateOf<(() -> Unit)?>(null) }
     val permissions = rememberSettingsPermissions(
         sendAction = onAction,
         onBluetoothGranted = { dialogs.bluetooth = true },
-        onNetworkGranted = { dialogs.network = true },
-        onCustomSourcesPermissionGranted = {
-            pendingCustomSourcesGrant.value?.invoke()
-            pendingCustomSourcesGrant.value = null
-            pendingCustomSourcesDeny.value = null
-        },
-        onCustomSourcesPermissionDenied = {
-            pendingCustomSourcesDeny.value?.invoke()
-            pendingCustomSourcesGrant.value = null
-            pendingCustomSourcesDeny.value = null
-        }
+        onNetworkGranted = { dialogs.network = true }
     )
 
     // Dialogs
@@ -128,30 +118,23 @@ private fun SettingsScreen(uiState: SettingsState, onAction: (SettingsAction) ->
     }
     if (dialogs.dataSources) {
         DataSourcesDialog(
-            useCustomTle = uiState.dataSourcesSettings.useCustomTLE,
-            useCustomTransceivers = uiState.dataSourcesSettings.useCustomTransceivers,
-            tleUrl = uiState.dataSourcesSettings.tleUrl,
-            transceiversUrl = uiState.dataSourcesSettings.transceiversUrl,
-            requestCustomSourcesPermission = { onGranted, onDenied ->
-                pendingCustomSourcesGrant.value = onGranted
-                pendingCustomSourcesDeny.value = onDenied
-                permissions.launchCustomSourcesPermission()
-            },
+            satelliteUrls = uiState.dataSourcesSettings.satelliteUrls,
+            transceiversUrls = uiState.dataSourcesSettings.transceiversUrls,
+            satelliteEnabled = uiState.dataSourcesSettings.satelliteEnabled,
+            transceiversEnabled = uiState.dataSourcesSettings.transceiversEnabled,
+            statusCodes = uiState.dataSourcesStatus,
             onImportTle = { permissions.launchTleImport(); dialogs.dataSources = false },
             onImportTransceivers = { permissions.launchTransceiverImport(); dialogs.dataSources = false },
             onDismiss = { dialogs.dataSources = false },
-            onSave = { useCustomTle, useCustomTransceivers, tleUrl, transceiversUrl ->
-                val current = uiState.dataSourcesSettings
-                val newSettings = current.copy(
-                    useCustomTLE = if (!useCustomTle || tleUrl.isNotBlank()) useCustomTle else current.useCustomTLE,
-                    tleUrl = if (!useCustomTle || tleUrl.isNotBlank()) tleUrl else current.tleUrl,
-                    useCustomTransceivers = if (!useCustomTransceivers || transceiversUrl.isNotBlank()) useCustomTransceivers else current.useCustomTransceivers,
-                    transceiversUrl = if (!useCustomTransceivers || transceiversUrl.isNotBlank()) transceiversUrl else current.transceiversUrl
+            onSave = { satUrls, txUrls, satEnabled, txEnabled ->
+                val newSettings = DataSourcesSettings(
+                    satelliteUrls = satUrls,
+                    transceiversUrls = txUrls,
+                    satelliteEnabled = satEnabled,
+                    transceiversEnabled = txEnabled
                 )
-                if (newSettings != current) onAction(SettingsAction.UpdateDataSources(newSettings))
-                if (newSettings.useCustomTLE || newSettings.useCustomTransceivers) {
-                    onAction(SettingsAction.UpdateFromWeb)
-                }
+                if (newSettings != uiState.dataSourcesSettings) onAction(SettingsAction.UpdateDataSources(newSettings))
+                onAction(SettingsAction.UpdateFromWeb)
             }
         )
     }
@@ -159,14 +142,15 @@ private fun SettingsScreen(uiState: SettingsState, onAction: (SettingsAction) ->
         NetworkOutputDialog(
             initialSettings = uiState.rcSettings,
             onDismiss = { dialogs.network = false },
-            onSave = { rotState, rotAddr, rotPort, rotFmt, freqState, freqAddr, freqPort, freqFmt ->
+            onSave = { rotState, rotAddr, rotPort, rotFmt, freqState, freqAddr, freqPort, freqFmt, freqOffsetHz ->
                 onAction(
                     SettingsAction.UpdateRC(
                         uiState.rcSettings.copy(
                             rotatorState = rotState, rotatorAddress = rotAddr,
                             rotatorPort = rotPort, rotatorFormat = rotFmt,
                             frequencyState = freqState, frequencyAddress = freqAddr,
-                            frequencyPort = freqPort, frequencyFormat = freqFmt
+                            frequencyPort = freqPort, frequencyFormat = freqFmt,
+                            frequencyOffsetHz = freqOffsetHz
                         )
                     )
                 )
@@ -198,10 +182,13 @@ private fun SettingsScreen(uiState: SettingsState, onAction: (SettingsAction) ->
             onSave = { onAction(SettingsAction.UpdateRadioControl(it)) }
         )
     }
+    if (dialogs.whatsNew) {
+        WhatsNewDialog(onDismiss = { dialogs.whatsNew = false })
+    }
 
     // URLs for top bar
     val uriHandler = LocalUriHandler.current
-    val appUrl = stringResource(R.string.prefs_app_url)
+//    val appUrl = stringResource(R.string.prefs_app_url)
     val donateUrl = stringResource(R.string.prefs_donate_url)
     val fdroidTitle = stringResource(R.string.prefs_fdroid_title)
     val fdroidUrl = stringResource(R.string.prefs_fdroid_url)
@@ -218,11 +205,11 @@ private fun SettingsScreen(uiState: SettingsState, onAction: (SettingsAction) ->
             if (isVerticalLayout) {
                 TopBar {
                     TopCard(
-                        onClick = { safeOpenUri(appUrl) },
+                        onClick = { dialogs.whatsNew = true },
                         version = uiState.appVersionName,
                         modifier = Modifier.weight(1f)
                     )
-                    PrimaryIconCard(onClick = { safeOpenUri(donateUrl) }, resId = R.drawable.ic_like)
+                    PrimaryIconCard(onClick = { safeOpenUri(donateUrl) }, resId = R.drawable.ic_pound)
                 }
                 TopBar {
                     Row(modifier = Modifier.weight(1f), horizontalArrangement = Arrangement.spacedBy(6.dp)) {
@@ -244,9 +231,9 @@ private fun SettingsScreen(uiState: SettingsState, onAction: (SettingsAction) ->
                 }
             } else {
                 TopBar {
-                    PrimaryIconCard(onClick = { safeOpenUri(donateUrl) }, resId = R.drawable.ic_like)
+                    PrimaryIconCard(onClick = { safeOpenUri(donateUrl) }, resId = R.drawable.ic_pound)
                     TopCard(
-                        onClick = { safeOpenUri(appUrl) },
+                        onClick = { dialogs.whatsNew = true },
                         version = uiState.appVersionName,
                         modifier = Modifier.weight(1f)
                     )
@@ -355,9 +342,9 @@ private fun LocationCard(
             Text(text = formatUpdateTime(updateTime = settings.stationPos.timestamp))
             Spacer(modifier = Modifier.height(2.dp))
             Row(horizontalArrangement = Arrangement.SpaceBetween, modifier = Modifier.fillMaxWidth()) {
-                Text(text = "Lat: ${settings.stationPos.latitude}°")
-                Text(text = "Lon: ${settings.stationPos.longitude}°")
-                Text(text = "Qth: ${settings.stationPos.qthLocator}")
+                Text(text = stringResource(R.string.prefs_lat_prefix, settings.stationPos.latitude))
+                Text(text = stringResource(R.string.prefs_lon_prefix, settings.stationPos.longitude))
+                Text(text = stringResource(R.string.prefs_qth_prefix, settings.stationPos.qthLocator))
             }
             Spacer(modifier = Modifier.height(1.dp))
             Row(horizontalArrangement = Arrangement.SpaceEvenly) {
@@ -667,7 +654,7 @@ private fun TopCard(onClick: () -> Unit, modifier: Modifier = Modifier, version:
                 .clickable { onClick() }) {
             Spacer(Modifier)
             Icon(
-                painter = painterResource(id = R.drawable.ic_satellites),
+                painter = painterResource(id = R.drawable.ic_sputnik),
                 contentDescription = null,
                 tint = MaterialTheme.colorScheme.primary
             )
@@ -718,6 +705,7 @@ private class DialogVisibility {
     var network by mutableStateOf(false)
     var bluetooth by mutableStateOf(false)
     var radioControl by mutableStateOf(false)
+    var whatsNew by mutableStateOf(false)
 }
 
 @Composable
@@ -725,12 +713,12 @@ private fun rememberDialogVisibility(): DialogVisibility {
     return rememberSaveable(saver = run {
         androidx.compose.runtime.saveable.Saver(
             save = {
-                listOf(it.position, it.locator, it.dataSources, it.network, it.bluetooth, it.radioControl)
+                listOf(it.position, it.locator, it.dataSources, it.network, it.bluetooth, it.radioControl, it.whatsNew)
             },
             restore = {
                 DialogVisibility().apply {
                     position = it[0]; locator = it[1]; dataSources = it[2]
-                    network = it[3]; bluetooth = it[4]; radioControl = it[5]
+                    network = it[3]; bluetooth = it[4]; radioControl = it[5]; whatsNew = it[6]
                 }
             }
         )
@@ -747,17 +735,14 @@ private class SettingsPermissions(
     val launchTleImport: () -> Unit,
     val launchTransceiverImport: () -> Unit,
     val launchBluetooth: () -> Unit,
-    val launchNetwork: () -> Unit,
-    val launchCustomSourcesPermission: () -> Unit
+    val launchNetwork: () -> Unit
 )
 
 @Composable
 private fun rememberSettingsPermissions(
     sendAction: (SettingsAction) -> Unit,
     onBluetoothGranted: () -> Unit,
-    onNetworkGranted: () -> Unit,
-    onCustomSourcesPermissionGranted: () -> Unit,
-    onCustomSourcesPermissionDenied: () -> Unit
+    onNetworkGranted: () -> Unit
 ): SettingsPermissions {
     val locationError = stringResource(R.string.prefs_loc_gps_error)
     val locationRequest = rememberLauncherForActivityResult(
@@ -794,15 +779,6 @@ private fun rememberSettingsPermissions(
         else sendAction(SettingsAction.ShowToast(networkError))
     }
 
-    val customSourcesRequest = rememberLauncherForActivityResult(ActivityResultContracts.RequestPermission()) { granted ->
-        if (granted) {
-            onCustomSourcesPermissionGranted()
-        } else {
-            onCustomSourcesPermissionDenied()
-            sendAction(SettingsAction.ShowToast(networkError))
-        }
-    }
-
     return remember {
         SettingsPermissions(
             launchLocation = {
@@ -819,13 +795,6 @@ private fun rememberSettingsPermissions(
                 } else {
                     onNetworkGranted()
                 }
-            },
-            launchCustomSourcesPermission = {
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.CINNAMON_BUN) {
-                    customSourcesRequest.launch(Manifest.permission.ACCESS_LOCAL_NETWORK)
-                } else {
-                    onCustomSourcesPermissionGranted()
-                }
             }
         )
     }

feature/settings/src/main/java/com/rtbishop/look4sat/feature/settings/SettingsState.kt

@@ -42,6 +42,7 @@ data class SettingsState(
     val rcSettings: RCSettings,
     val radioControlSettings: RadioControlSettings,
     val dataSourcesSettings: DataSourcesSettings,
+    val dataSourcesStatus: Map<String, Int> = emptyMap(),
     val pairedBluetoothDevices: List<Pair<String, String>> = emptyList()
 )
 

feature/settings/src/main/java/com/rtbishop/look4sat/feature/settings/SettingsViewModel.kt

@@ -49,6 +49,7 @@ class SettingsViewModel(
             rcSettings = settingsRepo.rcSettings.value,
             radioControlSettings = settingsRepo.radioControlSettings.value,
             dataSourcesSettings = settingsRepo.dataSourcesSettings.value,
+            dataSourcesStatus = settingsRepo.dataSourcesStatus.value,
             pairedBluetoothDevices = container.providePairedBluetoothDevices()
         )
     )
@@ -92,6 +93,11 @@ class SettingsViewModel(
                 _uiState.update { it.copy(dataSourcesSettings = settings) }
             }
         }
+        viewModelScope.launch {
+            settingsRepo.dataSourcesStatus.collect { status ->
+                _uiState.update { it.copy(dataSourcesStatus = status) }
+            }
+        }
         viewModelScope.launch {
             settingsRepo.radioControlSettings.collect { settings ->
                 _uiState.update { it.copy(radioControlSettings = settings) }
@@ -200,7 +206,6 @@ class SettingsViewModel(
         }
     }
 
-
     // endregion
 
     companion object {

feature/status/build.gradle.kts

@@ -0,0 +1,7 @@
+plugins {
+    alias(libs.plugins.convention.featurePlugin)
+}
+
+android {
+    namespace = "com.rtbishop.look4sat.feature.status"
+}

feature/status/src/main/java/com/rtbishop/look4sat/feature/status/SatStatusScreen.kt

@@ -0,0 +1,622 @@
+package com.rtbishop.look4sat.feature.status
+
+import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.FlowRow
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Button
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.FilterChip
+import androidx.compose.material3.FilterChipDefaults
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.ColorFilter
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import androidx.lifecycle.viewmodel.compose.viewModel
+import com.rtbishop.look4sat.core.domain.model.SatDay
+import com.rtbishop.look4sat.core.domain.model.SatReport
+import com.rtbishop.look4sat.core.domain.model.SatSlot
+import com.rtbishop.look4sat.core.domain.model.SatStatus
+import com.rtbishop.look4sat.core.domain.repository.IContainerProvider
+import com.rtbishop.look4sat.core.presentation.CardButton
+import com.rtbishop.look4sat.core.presentation.InfoDialog
+import com.rtbishop.look4sat.core.presentation.R
+import com.rtbishop.look4sat.core.presentation.layoutPadding
+import java.text.SimpleDateFormat
+import java.util.Calendar
+import java.util.Date
+import java.util.Locale
+import java.util.TimeZone
+
+/** Fixed width per day tile — tablet-safe; name column absorbs remaining space. */
+private val TILE_WIDTH: Dp = 64.dp
+
+private data class UploadOption(
+    val apiValue: String,
+    val labelResId: Int,
+    val color: Color
+)
+
+private val UPLOAD_OPTIONS = listOf(
+    UploadOption(AMSAT_REPORT_HEARD, R.string.amsat_upload_active, Color(0xFF648FFF)),
+    UploadOption(AMSAT_REPORT_TELEMETRY_ONLY, R.string.amsat_upload_tlm, Color(0xFFFFB000)),
+    UploadOption(AMSAT_REPORT_NOT_HEARD, R.string.amsat_upload_not_heard, Color(0xFFDC267F)),
+    UploadOption(AMSAT_REPORT_CREW_ACTIVE, R.string.amsat_upload_crew_active, Color(0xFFFE6100))
+)
+
+/**
+ * Map AMSAT status text to Material3 colorScheme colors.
+ * Addresses PR #233 review: use colorScheme instead of hardcoded Color() constants.
+ */
+@Composable
+private fun statusColorOf(statusText: String): Color {
+    return when {
+        statusText.contains("Heard", ignoreCase = true) && !statusText.contains("Not", ignoreCase = true) ->
+            MaterialTheme.colorScheme.tertiary
+        statusText.contains("Telemetry", ignoreCase = true) || statusText.contains("Beacon", ignoreCase = true) ->
+            MaterialTheme.colorScheme.tertiaryContainer
+        statusText.contains("Not Heard", ignoreCase = true) ->
+            Color(0xFFDC267F)
+        else ->
+            MaterialTheme.colorScheme.error
+    }
+}
+
+/** Localize AMSAT API status text for the current locale; falls back to the raw text. */
+@Composable
+private fun statusTextOf(statusText: String): String {
+    if (Locale.getDefault().language != Locale.CHINESE.language) return statusText
+    return when (statusText.lowercase()) {
+        "heard" -> stringResource(R.string.amsat_status_heard)
+        "telemetry only" -> stringResource(R.string.amsat_status_tlm_only)
+        "not heard" -> stringResource(R.string.amsat_status_not_heard)
+        "crew active" -> stringResource(R.string.amsat_status_crew_active)
+        else -> statusText
+    }
+}
+
+@Composable
+fun SatStatusDestination() {
+    val context = LocalContext.current
+    val container = (context.applicationContext as IContainerProvider).getMainContainer()
+    val viewModel: SatStatusViewModel = viewModel(factory = SatStatusViewModel.factory(container))
+    val uiState by viewModel.uiState.collectAsStateWithLifecycle()
+    SatStatusScreen(
+        uiState = uiState,
+        refresh = viewModel::refresh,
+        onToggleUpload = viewModel::toggleUploadPanel,
+        onUploadReportChange = viewModel::setUploadReport,
+        onUploadCallsignChange = viewModel::setUploadCallsign,
+        onUploadGridChange = viewModel::setUploadGrid,
+        onRequestSubmitUpload = viewModel::requestSubmitConfirmation,
+        onConfirmSubmitUpload = viewModel::confirmSubmitReport,
+        onDismissSubmitConfirmation = viewModel::dismissSubmitConfirmation,
+        onDismissUpload = viewModel::collapseUploadPanel
+    )
+}
+
+@Composable
+private fun SatStatusScreen(
+    uiState: SatStatusUiState,
+    refresh: () -> Unit,
+    onToggleUpload: () -> Unit,
+    onUploadReportChange: (String) -> Unit,
+    onUploadCallsignChange: (String) -> Unit,
+    onUploadGridChange: (String) -> Unit,
+    onRequestSubmitUpload: () -> Unit,
+    onConfirmSubmitUpload: (String) -> Unit,
+    onDismissSubmitConfirmation: () -> Unit,
+    onDismissUpload: () -> Unit
+) {
+    var selectedDay by remember { mutableStateOf<Pair<SatStatus, SatDay>?>(null) }
+    Column(modifier = Modifier.fillMaxSize().layoutPadding()) {
+        StatusHeader(fetchedAtUtcMs = uiState.fetchedAtUtcMs, isRefreshing = uiState.isRefreshing, onRefresh = refresh)
+        LegendRow()
+
+        when {
+            uiState.isLoading -> {
+                Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                    CircularProgressIndicator()
+                }
+            }
+            uiState.error != null && uiState.statuses.isEmpty() -> {
+                Column(
+                    modifier = Modifier.fillMaxSize(),
+                    verticalArrangement = Arrangement.Center,
+                    horizontalAlignment = Alignment.CenterHorizontally
+                ) {
+                    Text(text = stringResource(id = R.string.amsat_load_failed), color = MaterialTheme.colorScheme.error)
+                    TextButton(onClick = refresh) { Text(text = stringResource(id = R.string.amsat_retry)) }
+                }
+            }
+            else -> {
+                HeaderRow(statuses = uiState.statuses)
+                HorizontalDivider(thickness = 1.dp)
+                LazyColumn(modifier = Modifier.fillMaxSize()) {
+                    items(uiState.statuses, key = { it.name }) { status ->
+                        StatusRow(status = status, onClickDay = { day -> selectedDay = status to day })
+                    }
+                }
+            }
+        }
+    }
+
+    selectedDay?.let { (status, day) ->
+        ReportDialog(
+            statusName = status.name,
+            day = day,
+            reports = uiState.reports,
+            upload = uiState.upload,
+            onToggleUpload = onToggleUpload,
+            onReportChange = onUploadReportChange,
+            onCallsignChange = onUploadCallsignChange,
+            onGridChange = onUploadGridChange,
+            onRequestSubmitReport = onRequestSubmitUpload,
+            onConfirmSubmitReport = { onConfirmSubmitUpload(status.name) },
+            onDismissSubmitConfirmation = onDismissSubmitConfirmation,
+            onDismiss = {
+                selectedDay = null
+                onDismissUpload()
+            }
+        )
+    }
+}
+
+/** Top: update time + refresh button (spinner while loading) */
+@Composable
+private fun StatusHeader(fetchedAtUtcMs: Long, isRefreshing: Boolean, onRefresh: () -> Unit) {
+    Row(
+        modifier = Modifier.fillMaxWidth().padding(vertical = 4.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Text(
+            text = if (fetchedAtUtcMs > 0)
+                stringResource(id = R.string.amsat_updated) + " " + formatFetchedAt(fetchedAtUtcMs)
+            else
+                stringResource(id = R.string.amsat_title),
+            fontSize = 14.sp,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+            modifier = Modifier.weight(1f)
+        )
+        Box(
+            modifier = Modifier
+                .size(32.dp)
+                .clip(CircleShape)
+                .background(MaterialTheme.colorScheme.surfaceVariant)
+                .clickable(onClick = onRefresh),
+            contentAlignment = Alignment.Center
+        ) {
+            if (isRefreshing) {
+                CircularProgressIndicator(modifier = Modifier.size(16.dp), strokeWidth = 2.dp)
+            } else {
+                Image(
+                    painter = painterResource(id = R.drawable.ic_refresh),
+                    contentDescription = stringResource(id = R.string.amsat_refresh),
+                    modifier = Modifier.size(16.dp),
+                    colorFilter = ColorFilter.tint(MaterialTheme.colorScheme.primary)
+                )
+            }
+        }
+    }
+}
+
+/** Legend: FlowRow of colored chips — wraps to two lines on narrow screens, stays one line when wide. */
+@Composable
+private fun LegendRow() {
+    val legend = listOf(
+        stringResource(id = R.string.amsat_active) to Color(0xFF648FFF),
+        stringResource(id = R.string.amsat_tlm) to Color(0xFFFFB000),
+        stringResource(id = R.string.amsat_not_heard) to Color(0xFFDC267F),
+        stringResource(id = R.string.amsat_conflict) to Color(0xFFFE6100)
+    )
+    FlowRow(
+        modifier = Modifier.fillMaxWidth().padding(bottom = 6.dp),
+        horizontalArrangement = Arrangement.spacedBy(6.dp),
+        verticalArrangement = Arrangement.spacedBy(6.dp)
+    ) {
+        legend.forEach { (label, color) ->
+            val alphaColor = color.copy(alpha = 0.25f)
+            Row(
+                modifier = Modifier
+                    .clip(RoundedCornerShape(32.dp))
+                    .background(alphaColor)
+                    .padding(horizontal = 12.dp, vertical = 4.dp),
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Box(
+                    modifier = Modifier
+                        .size(8.dp)
+                        .clip(RoundedCornerShape(4.dp))
+                        .background(color)
+                )
+                Spacer(modifier = Modifier.width(6.dp))
+                Text(
+                    text = label,
+                    fontSize = 14.sp,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+            }
+        }
+    }
+}
+
+/** Header: satellite name column + fixed-width date labels aligned to tiles. */
+@Composable
+private fun HeaderRow(statuses: List<SatStatus>) {
+    val dates = statuses.firstOrNull()?.days?.map { it.dateLabel } ?: emptyList()
+    Row(
+        modifier = Modifier.fillMaxWidth().padding(vertical = 2.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Text(
+            text = stringResource(id = R.string.amsat_name),
+            fontSize = 12.sp,
+            fontWeight = FontWeight.Medium,
+            color = MaterialTheme.colorScheme.primary,
+            modifier = Modifier.weight(1f).padding(start = 4.dp)
+        )
+        dates.forEach { date ->
+            Text(
+                text = date,
+                fontSize = 12.sp,
+                fontWeight = FontWeight.Medium,
+                textAlign = TextAlign.Center,
+                color = MaterialTheme.colorScheme.primary,
+                modifier = Modifier.width(TILE_WIDTH)
+            )
+        }
+    }
+}
+
+/** Satellite row: name takes remaining width; day tiles are fixed-width (tablet-safe). */
+@Composable
+private fun StatusRow(status: SatStatus, onClickDay: (SatDay) -> Unit) {
+    val noReportGray = 0xFFC0C0C0L
+    Row(
+        modifier = Modifier.fillMaxWidth().padding(vertical = 2.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Text(
+            text = status.name,
+            fontSize = 14.sp,
+            maxLines = 1,
+            overflow = TextOverflow.Ellipsis,
+            modifier = Modifier.weight(1f).padding(end = 4.dp)
+        )
+        status.days.forEach { day ->
+            val slot = day.slots.firstOrNull { it.statusColor != noReportGray } ?: day.slots.first()
+            DayCell(
+                slot = slot,
+                modifier = Modifier.width(TILE_WIDTH).padding(horizontal = 2.dp),
+                onClick = { onClickDay(day) }
+            )
+        }
+    }
+}
+
+/** Day block: newest reported status among the day's 12 slots; gray when none. */
+@Composable
+private fun DayCell(slot: SatSlot, modifier: Modifier, onClick: () -> Unit) {
+    val color = Color(slot.statusColor)
+    Box(
+        modifier = modifier
+            .height(28.dp)
+            .clip(RoundedCornerShape(4.dp))
+            .background(color)
+            .clickable(onClick = onClick),
+        contentAlignment = Alignment.Center
+    ) {
+        if (slot.count > 0) {
+            Text(text = slot.count.toString(), fontSize = 13.sp, fontWeight = FontWeight.Bold, color = Color.White)
+        }
+    }
+}
+
+/** Report detail dialog (callsign / date / time / grid) + AMSAT report upload panel. */
+@Composable
+private fun ReportDialog(
+    statusName: String,
+    day: SatDay,
+    reports: Map<String, SatReport>,
+    upload: AmSatUploadUiState,
+    onToggleUpload: () -> Unit,
+    onReportChange: (String) -> Unit,
+    onCallsignChange: (String) -> Unit,
+    onGridChange: (String) -> Unit,
+    onRequestSubmitReport: () -> Unit,
+    onConfirmSubmitReport: () -> Unit,
+    onDismissSubmitConfirmation: () -> Unit,
+    onDismiss: () -> Unit
+) {
+    val dayReports = day.slots.flatMap { it.reportIds }.mapNotNull { reports[it] }
+    InfoDialog(
+        title = "$statusName · ${day.dateLabel}",
+        onDismiss = onDismiss,
+        onAccept = onDismiss,
+        extraAction = {
+            CardButton(
+                onClick = onToggleUpload,
+                text = stringResource(if (upload.isExpanded) R.string.amsat_upload_back else R.string.amsat_upload)
+            )
+        }
+    ) {
+        AnimatedVisibility(visible = upload.isExpanded) {
+            AmSatUploadPanel(
+                statusName = statusName,
+                upload = upload,
+                onReportChange = onReportChange,
+                onCallsignChange = onCallsignChange,
+                onGridChange = onGridChange,
+                onRequestSubmitReport = onRequestSubmitReport
+            )
+        }
+        if (upload.isConfirmingSubmit) {
+            AmSatUploadConfirmDialog(
+                statusName = statusName,
+                upload = upload,
+                onConfirm = onConfirmSubmitReport,
+                onDismiss = onDismissSubmitConfirmation
+            )
+        }
+        if (dayReports.isEmpty()) {
+            Text(
+                text = stringResource(id = R.string.amsat_no_reports),
+                modifier = Modifier.padding(horizontal = 16.dp, vertical = 8.dp)
+            )
+            Spacer(modifier = Modifier.height(8.dp))
+        } else {
+            LazyColumn(modifier = Modifier.heightIn(max = 480.dp)) {
+                items(dayReports) { report ->
+                    Column(modifier = Modifier.fillMaxWidth().padding(horizontal = 16.dp, vertical = 8.dp)) {
+                        Row(verticalAlignment = Alignment.CenterVertically) {
+                            Box(
+                                modifier = Modifier
+                                    .size(8.dp)
+                                    .clip(CircleShape)
+                                    .background(statusColorOf(report.statusText))
+                            )
+                            Spacer(modifier = Modifier.width(6.dp))
+                            Text(text = statusTextOf(report.statusText), fontSize = 14.sp, fontWeight = FontWeight.Bold)
+                        }
+                        Text(
+                            text = "${report.call}  ${report.dateUtc}  ${report.timeUtc}" +
+                                if (report.grid.isNotBlank() && report.grid != "-") "  ${report.grid}" else "",
+                            fontSize = 14.sp,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                    }
+                    HorizontalDivider(thickness = 0.5.dp)
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun AmSatUploadPanel(
+    statusName: String,
+    upload: AmSatUploadUiState,
+    onReportChange: (String) -> Unit,
+    onCallsignChange: (String) -> Unit,
+    onGridChange: (String) -> Unit,
+    onRequestSubmitReport: () -> Unit
+) {
+    val options = remember(statusName) {
+        if (statusName.startsWith("ISS")) UPLOAD_OPTIONS else UPLOAD_OPTIONS.filter { it.apiValue != AMSAT_REPORT_CREW_ACTIVE }
+    }
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(horizontal = 16.dp, vertical = 8.dp)
+            .clip(RoundedCornerShape(16.dp))
+            .background(MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.45f))
+            .padding(12.dp),
+        verticalArrangement = Arrangement.spacedBy(10.dp)
+    ) {
+        Text(
+            text = stringResource(R.string.amsat_upload_report),
+            fontSize = 16.sp,
+            fontWeight = FontWeight.Medium,
+            color = MaterialTheme.colorScheme.primary
+        )
+        Text(
+            text = stringResource(R.string.amsat_upload_time_now, formatUtcNowForUpload(System.currentTimeMillis())),
+            fontSize = 12.sp,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+        Text(
+            text = stringResource(R.string.amsat_upload_status),
+            fontSize = 12.sp,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+        FlowRow(
+            horizontalArrangement = Arrangement.spacedBy(6.dp),
+            verticalArrangement = Arrangement.spacedBy(4.dp)
+        ) {
+            options.forEach { option ->
+                val selected = upload.selectedReport == option.apiValue
+                FilterChip(
+                    selected = selected,
+                    onClick = { onReportChange(option.apiValue) },
+                    label = {
+                        Row(verticalAlignment = Alignment.CenterVertically) {
+                            Box(
+                                modifier = Modifier
+                                    .size(8.dp)
+                                    .clip(CircleShape)
+                                    .background(if (selected) Color.White else option.color)
+                            )
+                            Spacer(modifier = Modifier.width(6.dp))
+                            Text(stringResource(option.labelResId), maxLines = 1)
+                        }
+                    },
+                    colors = FilterChipDefaults.filterChipColors(
+                        containerColor = option.color.copy(alpha = 0.10f),
+                        labelColor = MaterialTheme.colorScheme.onSurface,
+                        selectedContainerColor = option.color,
+                        selectedLabelColor = Color.White
+                    ),
+                    border = FilterChipDefaults.filterChipBorder(
+                        enabled = true,
+                        selected = selected,
+                        borderColor = option.color.copy(alpha = 0.60f),
+                        selectedBorderColor = option.color
+                    )
+                )
+            }
+        }
+        Row(horizontalArrangement = Arrangement.spacedBy(8.dp), modifier = Modifier.fillMaxWidth()) {
+            OutlinedTextField(
+                value = upload.callsign,
+                onValueChange = onCallsignChange,
+                label = { Text(stringResource(R.string.amsat_upload_callsign)) },
+                singleLine = true,
+                modifier = Modifier.weight(1f)
+            )
+            OutlinedTextField(
+                value = upload.gridSquare,
+                onValueChange = onGridChange,
+                label = { Text(stringResource(R.string.amsat_upload_grid)) },
+                singleLine = true,
+                modifier = Modifier.weight(1f)
+            )
+        }
+        Button(
+            onClick = onRequestSubmitReport,
+            enabled = !upload.isSubmitting && upload.callsign.isNotBlank(),
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            if (upload.isSubmitting) {
+                CircularProgressIndicator(modifier = Modifier.size(16.dp), strokeWidth = 2.dp)
+            } else {
+                Text(stringResource(R.string.amsat_upload_submit))
+            }
+        }
+        upload.message?.let { message ->
+            if (message == UPLOAD_MESSAGE_SUCCESS) {
+                Text(
+                    text = stringResource(R.string.amsat_upload_success),
+                    fontSize = 12.sp,
+                    color = MaterialTheme.colorScheme.primary
+                )
+            }
+        }
+        upload.error?.let { error ->
+            Text(
+                text = uploadErrorText(error),
+                fontSize = 12.sp,
+                color = MaterialTheme.colorScheme.error
+            )
+        }
+    }
+}
+
+@Composable
+private fun AmSatUploadConfirmDialog(
+    statusName: String,
+    upload: AmSatUploadUiState,
+    onConfirm: () -> Unit,
+    onDismiss: () -> Unit
+) {
+    val option = UPLOAD_OPTIONS.firstOrNull { it.apiValue == upload.selectedReport } ?: UPLOAD_OPTIONS.first()
+    val statusLabel = stringResource(option.labelResId)
+    val grid = upload.gridSquare.ifBlank { stringResource(R.string.amsat_upload_grid_none) }
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = { Text(stringResource(R.string.amsat_upload_confirm_title)) },
+        text = {
+            Text(
+                text = stringResource(
+                    R.string.amsat_upload_confirm_message,
+                    statusName,
+                    statusLabel,
+                    upload.callsign,
+                    grid
+                )
+            )
+        },
+        confirmButton = {
+            TextButton(onClick = onConfirm, enabled = !upload.isSubmitting) {
+                Text(stringResource(R.string.amsat_upload_confirm))
+            }
+        },
+        dismissButton = {
+            TextButton(onClick = onDismiss, enabled = !upload.isSubmitting) {
+                Text(stringResource(R.string.btn_cancel))
+            }
+        }
+    )
+}
+
+@Composable
+private fun uploadErrorText(error: String): String {
+    return when (error) {
+        UPLOAD_ERROR_CALLSIGN_REQUIRED -> stringResource(R.string.amsat_upload_callsign_required)
+        UPLOAD_ERROR_GRID_INVALID -> stringResource(R.string.amsat_upload_grid_invalid)
+        else -> stringResource(R.string.amsat_upload_failed, error)
+    }
+}
+
+private val MONTH_ABBR = arrayOf("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec")
+
+private fun formatFetchedAt(utcMs: Long): String {
+    val cal = Calendar.getInstance()
+    cal.timeInMillis = utcMs
+    val day = cal.get(Calendar.DAY_OF_MONTH)
+    val monthIndex = cal.get(Calendar.MONTH)
+    val year = cal.get(Calendar.YEAR)
+    val hh = cal.get(Calendar.HOUR_OF_DAY).toString().padStart(2, '0')
+    val mm = cal.get(Calendar.MINUTE).toString().padStart(2, '0')
+    val ss = cal.get(Calendar.SECOND).toString().padStart(2, '0')
+    return if (Locale.getDefault().language == Locale.CHINESE.language) {
+        "${year}年${monthIndex + 1}月${day}日 - $hh:$mm:$ss"
+    } else {
+        "$day${MONTH_ABBR[monthIndex]} $year - $hh:$mm:$ss"
+    }
+}
+
+private fun formatUtcNowForUpload(utcMs: Long): String {
+    val formatter = SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.US).apply {
+        timeZone = TimeZone.getTimeZone("UTC")
+    }
+    return formatter.format(Date(utcMs))
+}

feature/status/src/main/java/com/rtbishop/look4sat/feature/status/SatStatusViewModel.kt

@@ -0,0 +1,291 @@
+package com.rtbishop.look4sat.feature.status
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import androidx.lifecycle.viewmodel.initializer
+import androidx.lifecycle.viewmodel.viewModelFactory
+import com.rtbishop.look4sat.core.domain.model.AmSatReportSubmission
+import com.rtbishop.look4sat.core.domain.model.SatReport
+import com.rtbishop.look4sat.core.domain.model.SatStatus
+import com.rtbishop.look4sat.core.domain.model.SatStatusPage
+import com.rtbishop.look4sat.core.domain.repository.IAmSatRepository
+import com.rtbishop.look4sat.core.domain.repository.IMainContainer
+import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import java.util.Locale
+
+const val AMSAT_REPORT_HEARD = "Heard"
+const val AMSAT_REPORT_TELEMETRY_ONLY = "Telemetry Only"
+const val AMSAT_REPORT_NOT_HEARD = "Not Heard"
+const val AMSAT_REPORT_CREW_ACTIVE = "Crew Active"
+
+const val UPLOAD_ERROR_CALLSIGN_REQUIRED = "callsign_required"
+const val UPLOAD_ERROR_GRID_INVALID = "grid_invalid"
+const val UPLOAD_MESSAGE_SUCCESS = "success"
+
+data class AmSatUploadUiState(
+    val isExpanded: Boolean = false,
+    val selectedReport: String = AMSAT_REPORT_HEARD,
+    val callsign: String = "",
+    val gridSquare: String = "",
+    val isSubmitting: Boolean = false,
+    val isConfirmingSubmit: Boolean = false,
+    val message: String? = null,
+    val error: String? = null
+)
+
+data class SatStatusUiState(
+    val isLoading: Boolean = false,
+    val isRefreshing: Boolean = false,
+    val statuses: List<SatStatus> = emptyList(),
+    val reports: Map<String, SatReport> = emptyMap(),
+    val fetchedAtUtcMs: Long = 0L,
+    val error: String? = null,
+    val upload: AmSatUploadUiState = AmSatUploadUiState()
+)
+
+class SatStatusViewModel(
+    private val amSatRepo: IAmSatRepository,
+    private val settingsRepo: ISettingsRepo
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(SatStatusUiState(isLoading = true))
+    val uiState: StateFlow<SatStatusUiState> = _uiState
+
+    init {
+        fetch()
+    }
+
+    fun fetch() {
+        viewModelScope.launch {
+            _uiState.update { it.copy(isLoading = true, error = null) }
+            try {
+                val page = amSatRepo.fetchStatus()
+                if (page != null && page.statuses.isNotEmpty()) {
+                    applyStatusPage(page)
+                } else {
+                    _uiState.update {
+                        it.copy(isLoading = false, isRefreshing = false, error = "fetch_failed")
+                    }
+                }
+            } catch (exception: Exception) {
+                _uiState.update {
+                    it.copy(isLoading = false, isRefreshing = false, error = exception.message ?: "fetch_failed")
+                }
+            }
+        }
+    }
+
+    fun refresh() {
+        if (_uiState.value.isRefreshing) return
+        _uiState.update { it.copy(isRefreshing = true, error = null) }
+        viewModelScope.launch {
+            try {
+                val page = amSatRepo.fetchStatus()
+                if (page != null && page.statuses.isNotEmpty()) {
+                    applyStatusPage(page)
+                } else {
+                    _uiState.update { it.copy(isRefreshing = false, error = "fetch_failed") }
+                }
+            } catch (exception: Exception) {
+                _uiState.update { it.copy(isRefreshing = false, error = exception.message ?: "fetch_failed") }
+            }
+        }
+    }
+
+    private fun applyStatusPage(page: SatStatusPage) {
+        _uiState.update {
+            it.copy(
+                isLoading = false,
+                isRefreshing = false,
+                statuses = page.statuses,
+                reports = page.reports,
+                fetchedAtUtcMs = page.fetchedAtUtcMs,
+                error = null
+            )
+        }
+    }
+
+    fun toggleUploadPanel() {
+        val storedCallsign = settingsRepo.getAmSatCallsign()
+        val defaultGrid = defaultGridSquare()
+        _uiState.update { state ->
+            val upload = state.upload
+            val expanded = !upload.isExpanded
+            state.copy(
+                upload = if (expanded) {
+                    upload.copy(
+                        isExpanded = true,
+                        callsign = upload.callsign.ifBlank { storedCallsign },
+                        gridSquare = upload.gridSquare.ifBlank { defaultGrid },
+                        message = null,
+                        error = null
+                    )
+                } else {
+                    upload.copy(isExpanded = false, isConfirmingSubmit = false, message = null, error = null)
+                }
+            )
+        }
+    }
+
+    fun collapseUploadPanel() {
+        _uiState.update {
+            it.copy(upload = it.upload.copy(isExpanded = false, isConfirmingSubmit = false, message = null, error = null))
+        }
+    }
+
+    fun setUploadReport(report: String) {
+        _uiState.update {
+            it.copy(upload = it.upload.copy(selectedReport = report, isConfirmingSubmit = false, message = null, error = null))
+        }
+    }
+
+    fun setUploadCallsign(callsign: String) {
+        val normalized = callsign.trim().uppercase(Locale.US)
+        settingsRepo.setAmSatCallsign(normalized)
+        _uiState.update {
+            it.copy(upload = it.upload.copy(callsign = normalized, isConfirmingSubmit = false, message = null, error = null))
+        }
+    }
+
+    fun setUploadGrid(grid: String) {
+        val normalized = grid.trim().uppercase(Locale.US)
+        _uiState.update {
+            it.copy(upload = it.upload.copy(gridSquare = normalized, isConfirmingSubmit = false, message = null, error = null))
+        }
+    }
+
+    fun requestSubmitConfirmation() {
+        val prepared = validateUpload(_uiState.value.upload) ?: return
+        _uiState.update {
+            it.copy(
+                upload = it.upload.copy(
+                    callsign = prepared.callsign,
+                    gridSquare = prepared.grid,
+                    isConfirmingSubmit = true,
+                    message = null,
+                    error = null
+                )
+            )
+        }
+    }
+
+    fun dismissSubmitConfirmation() {
+        _uiState.update { it.copy(upload = it.upload.copy(isConfirmingSubmit = false)) }
+    }
+
+    fun confirmSubmitReport(satelliteName: String) {
+        val upload = _uiState.value.upload
+        if (upload.isSubmitting) return
+        val prepared = validateUpload(upload) ?: return
+
+        settingsRepo.setAmSatCallsign(prepared.callsign)
+        _uiState.update {
+            it.copy(
+                upload = it.upload.copy(
+                    callsign = prepared.callsign,
+                    gridSquare = prepared.grid,
+                    isSubmitting = true,
+                    isConfirmingSubmit = false,
+                    error = null,
+                    message = null
+                )
+            )
+        }
+        viewModelScope.launch {
+            val result = amSatRepo.submitReport(
+                AmSatReportSubmission(
+                    name = satelliteName,
+                    report = prepared.report,
+                    callsign = prepared.callsign,
+                    gridSquare = prepared.grid,
+                    reportedAtUtcMillis = System.currentTimeMillis()
+                )
+            )
+            if (result.success) {
+                _uiState.update {
+                    it.copy(
+                        upload = it.upload.copy(
+                            isSubmitting = false,
+                            callsign = prepared.callsign,
+                            gridSquare = prepared.grid,
+                            message = UPLOAD_MESSAGE_SUCCESS,
+                            error = null
+                        )
+                    )
+                }
+                refresh()
+            } else {
+                _uiState.update {
+                    it.copy(
+                        upload = it.upload.copy(
+                            isSubmitting = false,
+                            message = null,
+                            error = result.message.ifBlank { "Upload failed" }
+                        )
+                    )
+                }
+            }
+        }
+    }
+
+    private fun validateUpload(upload: AmSatUploadUiState): PreparedUpload? {
+        val callsign = upload.callsign.trim().uppercase(Locale.US)
+        val grid = upload.gridSquare.trim().uppercase(Locale.US)
+        return when {
+            callsign.isBlank() -> {
+                _uiState.update {
+                    it.copy(
+                        upload = it.upload.copy(
+                            isConfirmingSubmit = false,
+                            error = UPLOAD_ERROR_CALLSIGN_REQUIRED,
+                            message = null
+                        )
+                    )
+                }
+                null
+            }
+            grid.isNotBlank() && !MAIDENHEAD_GRID.matches(grid) -> {
+                _uiState.update {
+                    it.copy(
+                        upload = it.upload.copy(
+                            isConfirmingSubmit = false,
+                            error = UPLOAD_ERROR_GRID_INVALID,
+                            message = null
+                        )
+                    )
+                }
+                null
+            }
+            else -> PreparedUpload(
+                report = upload.selectedReport,
+                callsign = callsign,
+                grid = grid
+            )
+        }
+    }
+
+    private fun defaultGridSquare(): String {
+        val grid = settingsRepo.stationPosition.value.qthLocator.trim().uppercase(Locale.US)
+        return grid.takeUnless { it == "JJ00AA" }.orEmpty()
+    }
+
+    companion object {
+        fun factory(container: IMainContainer) = viewModelFactory {
+            initializer {
+                SatStatusViewModel(container.amSatRepo, container.settingsRepo)
+            }
+        }
+    }
+}
+
+private data class PreparedUpload(
+    val report: String,
+    val callsign: String,
+    val grid: String
+)
+
+private val MAIDENHEAD_GRID = Regex("^[A-R]{2}[0-9]{2}([A-X]{2})?$")

gradle/libs.versions.toml

@@ -1,8 +1,8 @@
 [versions]
 #noinspection UnusedVersionCatalogEntry
-appVersionCode = "444"
+appVersionCode = "447"
 #noinspection UnusedVersionCatalogEntry
-appVersionName = "4.4.4"
+appVersionName = "4.4.7"
 #noinspection UnusedVersionCatalogEntry
 compileSdk = "37"
 #noinspection UnusedVersionCatalogEntry
@@ -12,24 +12,25 @@ jdkVersion = "21"
 #noinspection UnusedVersionCatalogEntry
 packageName = "com.rtbishop.look4sat"
 
-android-gradle-plugin = "9.3.1"
+android-gradle-plugin = "9.4.0"
 
 androidx-core-ktx = "1.19.0"
 androidx-core-splashscreen = "1.2.0"
-androidx-room = "2.8.4"
+androidx-room = "2.8.5"
 
-compose-bom = "2026.06.01"
+compose-bom = "2026.09.00"
 compose-activity = "1.13.0"
 compose-lifecycle = "2.11.0"
-compose-navigation3 = "1.1.5"
+compose-navigation3 = "1.1.7"
 
-google-ksp = "2.3.10"
+google-ksp = "2.3.11"
 
-kotlin = "2.4.10"
+kotlin = "2.4.20"
 kotlin-coroutines = "1.11.0"
 kotlin-serialization = "1.11.0"
 
-other-okhttp = "5.4.0"
+other-detekt = "1.23.8"
+other-okhttp = "5.5.0"
 other-osmdroid = "6.1.20"
 
 test-junit4 = "4.13.2"
@@ -72,6 +73,8 @@ kotlin-gradlePlugin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", ve
 #noinspection UnusedVersionCatalogEntry
 kotlin-serialization = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlin-serialization" }
 
+#noinspection UnusedVersionCatalogEntry
+other-detekt-formatting = { module = "io.gitlab.arturbosch.detekt:detekt-formatting", version.ref = "other-detekt" }
 #noinspection UnusedVersionCatalogEntry
 other-okhttp = { module = "com.squareup.okhttp3:okhttp", version.ref = "other-okhttp" }
 #noinspection UnusedVersionCatalogEntry
@@ -90,6 +93,7 @@ compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "
 google-ksp = { id = "com.google.devtools.ksp", version.ref = "google-ksp" }
 kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }
 kotlin-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
+other-detekt = { id = "io.gitlab.arturbosch.detekt", version.ref = "other-detekt" }
 # plugins defined by this project
 convention-applicationPlugin = { id = "com.rtbishop.look4sat.convention.applicationPlugin" }
 convention-coreDataPlugin = { id = "com.rtbishop.look4sat.convention.coreDataPlugin" }

gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
-#Sat Jun 27 12:51:12 BST 2026
+#Sat Sep 12 11:29:59 BST 2026
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.6.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.7.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

settings.gradle.kts

@@ -25,5 +25,6 @@ include(
     ":feature:passes",
     ":feature:radar",
     ":feature:satellites",
-    ":feature:settings"
+    ":feature:settings",
+    ":feature:status"
 )