i18n: localize WAPC/WAJA map labels to English

- wapc.json: add name_en for all 34 provinces (Beijing/Guangdong/...)
- waja.json: add name_en for all 47 prefectures (Gifu/Kyoto/...)
- AwardBoundaryOverlay: render English label on non-Chinese UI,
  fall back to source name when name_en is absent
- bump version to 4.4.6-ba7opf.10.4 (469)

README.md

@@ -6,11 +6,16 @@
 
 ## 本仓库特色功能
 
+- **网格地图模式（Grid Mode）** — 地图页内置 VUCC 网格覆盖图：已通联网格绿色填充、漫游网格蓝色 45° 斜纹（疏朗半透明样式）、当前所在方格淡黄加粗框（field 与 sub-square 缩放均显示）；极区（南北纬 80°–90°）网格线与二位标签完整可见；点击已通联网格弹出该网格内通联明细弹窗；进入网格模式默认 VUCC 视图
+- **奖状边界模式（Award Boundaries）** — 在网格地图上叠加 DXCC / WAPC / WAJA / WAZ / WAS 国界·省界·分区边界，已确认区域绿色填充；香港/澳门作为独立实体显示（DXCC 321/152），港澳标签强制显示
+- **LoTW 网格同步** — 直连 ARRL Logbook（账号密码验证）下载确认报告，worked / roamed 网格自动更新（兼容任意字段顺序的 ADIF 解析）；同步失败按凭据错误/限流/超时分类提示
 - **双站过境匹配（Mutual Pass）** — 输入友台经纬度/网格，筛选双方同时可见的卫星过境，在地图上同时显示双方仰角曲线和地面轨迹，支持一键跳转雷达页查看详情
 - **线性卫星转发器频率计算器** — 在雷达页的 Calculator 标签页中，支持 TX/RX 双向多普勒频率计算，以及下行频率偏移（offset）输入，方便操作带偏移的线性卫星
-- **CW 解码器** — 集成 Morse Expert 解码引擎，支持瀑布图、实时解码文本
+- **CW 解码器** — 集成 Morse Expert 解码引擎，支持瀑布图、实时解码文本（arm64 + armeabi-v7a 双架构）
 - **Passband 模式** — 支持通过位置滑块（Passband）自动计算 TX/RX 频率，避免切换时跳变
-- **AMSAT 状态页** — 实时查看卫星的业余无线电转发器状态（开启/关闭/待机），支持 72 小时历史记录回放
+- **AMSAT 状态页** — 实时查看卫星的业余无线电转发器状态（开启/关闭/待机），支持 72 小时历史记录回放，启动时预取缓存
+- **应用内更新检查** — 设置页一键检查 GitHub 最新 Release，展示版本说明并直接下载安装
+- **自定义 TLE 数据源** — 可添加自定义 TLE/Celestrak CSV 数据源，长按拖拽排序，数据源启停开关与 HTTP 状态码显示
 - **中文界面优化** — 翻译修正、UI 布局调整，系统语言自动切换
 
 ## 上游仓库

app/build.gradle.kts

@@ -1,19 +1,36 @@
+import java.io.FileInputStream
+import java.util.Properties
+
 plugins {
     alias(libs.plugins.convention.applicationPlugin)
 }
 
+// Release signing credentials live in local.properties (gitignored) or
+// environment variables — never hardcode passwords in VCS.
+val releaseProps = Properties().apply {
+    val propsFile = rootProject.file("local.properties")
+    if (propsFile.exists()) FileInputStream(propsFile).use { load(it) }
+}
+fun releaseCred(name: String): String =
+    releaseProps.getProperty(name) ?: System.getenv(name) ?: ""
+
 android {
     namespace = libs.versions.packageName.get()
     defaultConfig {
         applicationId = "cn.ba7opf.look4sat"
-        ndk { abiFilters.add("armeabi-v7a") }
+        // CW decoder ships for both ABIs (see feature/cw jniLibs); the APK must
+        // not be pinned to 32-bit only or 64-bit devices fall back to ARM32.
+        ndk {
+            abiFilters.add("armeabi-v7a")
+            abiFilters.add("arm64-v8a")
+        }
     }
     signingConfigs {
         create("release") {
             storeFile = file(System.getProperty("user.home") + "/my-release-key.jks")
-            storePassword = "look4sat123"
-            keyAlias = "look4sat"
-            keyPassword = "look4sat123"
+            storePassword = releaseCred("RELEASE_STORE_PASSWORD")
+            keyAlias = releaseCred("RELEASE_KEY_ALIAS").ifEmpty { "look4sat" }
+            keyPassword = releaseCred("RELEASE_KEY_PASSWORD")
         }
     }
     buildTypes {

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

@@ -51,7 +51,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
@@ -94,16 +93,11 @@ import com.rtbishop.look4sat.feature.status.SatStatusDestination
 fun NavRoot(deeplink: String? = null) {
     val rootBackStack = rememberNavBackStack(Screen.Passes)
     val deeplinkResolver = DeeplinkResolver()
-    var openMapRequest by remember { mutableIntStateOf(0) }
     LaunchedEffect(deeplink) {
         deeplink?.let { rootBackStack.add(deeplinkResolver.resolve(it)) }
     }
     val navigateBack: () -> Unit = { rootBackStack.removeLastOrNull() }
     val navigateToRadar: () -> Unit = { rootBackStack.add(RadarDestination) }
-    val navigateToMap: () -> Unit = {
-        while (rootBackStack.size > 1) rootBackStack.removeAt(rootBackStack.size - 1)
-        openMapRequest += 1
-    }
     // 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 }
@@ -124,9 +118,7 @@ fun NavRoot(deeplink: String? = null) {
         entryProvider = entryProvider {
             entry<Screen.Passes> {
                 MainScreen(
-                    navigateToRadar = navigateToRadar,
-                    openMapRequest = openMapRequest,
-                    onOpenMapRequestHandled = { openMapRequest = 0 }
+                    navigateToRadar = navigateToRadar
                 )
             }
             entry<RadarDestination> {
@@ -134,7 +126,7 @@ fun NavRoot(deeplink: String? = null) {
                     modifier = Modifier.fillMaxSize(),
                     color = MaterialTheme.colorScheme.background
                 ) {
-                    RadarDestination(navigateUp = navigateBack, navigateToMap = navigateToMap)
+                    RadarDestination(navigateUp = navigateBack)
                 }
             }
         }
@@ -143,25 +135,16 @@ fun NavRoot(deeplink: String? = null) {
 
 @Composable
 fun MainScreen(
-    navigateToRadar: () -> Unit = {},
-    openMapRequest: Int = 0,
-    onOpenMapRequestHandled: () -> Unit = {}
+    navigateToRadar: () -> Unit = {}
 ) {
     val backStack = rememberNavBackStack(Screen.Passes)
     val currentKey = backStack.lastOrNull()
     val navigateBack: () -> Unit = { backStack.removeLastOrNull() }
-    val navigateToMap: () -> Unit = {
-        while (backStack.size > 1) backStack.removeAt(backStack.size - 1)
-        backStack.add(Screen.Map)
-    }
-    LaunchedEffect(openMapRequest) {
-        if (openMapRequest > 0) {
-            navigateToMap()
-            onOpenMapRequestHandled()
-        }
-    }
     val fadeTransition = fadeIn(animationSpec = tween(350)) togetherWith fadeOut(animationSpec = tween(350))
-    val navItems = listOf(Screen.Satellites, Screen.Passes, Screen.AMSAT, Screen.Mutual, Screen.Settings)
+    // Map sits at position 4 from the left, matching the upstream nav order
+    // (Satellites, Passes, AMSAT/Status, Map, ...), with the fork's Mutual tab
+    // appended before Settings.
+    val navItems = listOf(Screen.Satellites, Screen.Passes, Screen.AMSAT, Screen.Map, Screen.Mutual, Screen.Settings)
 
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
@@ -185,7 +168,7 @@ fun MainScreen(
                     val isSelected = when (currentKey) {
                         is Screen.Satellites -> screen is Screen.Satellites
                         is Screen.Passes -> screen is Screen.Passes
-                        is Screen.Map -> screen is Screen.Passes
+                        is Screen.Map -> screen is Screen.Map
                         is Screen.AMSAT -> screen is Screen.AMSAT
                         is Screen.Mutual -> screen is Screen.Mutual
                         is Screen.Settings -> screen is Screen.Settings
@@ -196,7 +179,7 @@ fun MainScreen(
                         label = { Text(stringResource(screen.titleResId)) },
                         selected = isSelected,
                         onClick = {
-                            if (isSelected && !(currentKey is Screen.Map && screen is Screen.Passes)) return@item
+                            if (isSelected) return@item
                             while (backStack.size > 1) backStack.removeAt(backStack.size - 1)
                             if (screen !is Screen.Passes) backStack.add(screen)
                         }
@@ -236,8 +219,7 @@ fun MainScreen(
                                     container.setMutualPassData(MutualPassData())
                                     container.satelliteRepo.selectPass(catNum, aosTime)
                                     navigateToRadar()
-                                },
-                                navigateToMap = navigateToMap
+                                }
                             )
                         }
                         entry<Screen.Map> {

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

@@ -36,6 +36,8 @@ import com.rtbishop.look4sat.core.data.repository.SelectionRepo
 import com.rtbishop.look4sat.core.data.repository.SensorsRepo
 import com.rtbishop.look4sat.core.data.repository.SettingsRepo
 import com.rtbishop.look4sat.core.data.repository.UpdateRepository
+import com.rtbishop.look4sat.core.data.repository.LoTWRepository
+import com.rtbishop.look4sat.core.data.repository.WavelogRepository
 import com.rtbishop.look4sat.core.data.source.LocalSource
 import com.rtbishop.look4sat.core.data.source.RemoteSource
 import com.rtbishop.look4sat.core.data.usecase.AddToCalendar
@@ -48,10 +50,12 @@ import com.rtbishop.look4sat.core.domain.repository.IMainContainer
 import com.rtbishop.look4sat.core.domain.repository.IRadioController
 import com.rtbishop.look4sat.core.domain.repository.IRadioTrackingService
 import com.rtbishop.look4sat.core.domain.repository.IReporter
+import com.rtbishop.look4sat.core.domain.repository.ILoTWRepository
 import com.rtbishop.look4sat.core.domain.repository.ISatelliteRepo
 import com.rtbishop.look4sat.core.domain.repository.ISelectionRepo
 import com.rtbishop.look4sat.core.domain.repository.ISensorsRepo
 import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
+import com.rtbishop.look4sat.core.domain.repository.IWavelogRepository
 import com.rtbishop.look4sat.core.domain.repository.MutualPassData
 import com.rtbishop.look4sat.core.domain.source.ILocalSource
 import com.rtbishop.look4sat.core.domain.source.IRemoteSource
@@ -81,6 +85,8 @@ class MainContainer(private val context: Context) : IMainContainer {
     override val databaseRepo = provideDatabaseRepo()
     override val amSatRepo by lazy { AmSatRepository(remoteSource, appScope) }
     override val updateRepo by lazy { UpdateRepository(remoteSource) }
+    override val wavelogRepo: IWavelogRepository by lazy { WavelogRepository() }
+    override val lotwRepo: ILoTWRepository by lazy { LoTWRepository() }
     override val radioTrackingService: IRadioTrackingService by lazy {
         val manager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
         RadioTrackingService(appScope, manager, satelliteRepo, settingsRepo)

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

@@ -199,11 +199,10 @@ class AmSatRepository(
     /** Build one SatStatus (3 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 monthAbbr = arrayOf("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec")
         val utc = Calendar.getInstance(TimeZone.getTimeZone("UTC"))
         val labels = (0 until 3).map { d ->
             utc.timeInMillis = (nowSec - d * 86400L) * 1000
-            "${monthAbbr[utc.get(Calendar.MONTH)]} ${utc.get(Calendar.DAY_OF_MONTH)}"
+            formatDayLabel(utc)
         }
         return names.map { name ->
             val slots = (0 until 36).map { slotIdx ->
@@ -228,6 +227,15 @@ class AmSatRepository(
         }
     }
 
+    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

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

@@ -0,0 +1,356 @@
+/*
+ * 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.data.repository
+
+import com.rtbishop.look4sat.core.domain.repository.ILoTWRepository
+import com.rtbishop.look4sat.core.domain.repository.LoTWResult
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import java.net.HttpURLConnection
+import java.net.SocketTimeoutException
+import java.net.URL
+import java.net.URLEncoder
+import java.io.IOException
+import javax.net.ssl.SSLException
+
+/**
+ * Fetches confirmed gridsquares directly from ARRL LoTW via the official report endpoint:
+ *   GET https://lotw.arrl.org/lotwuser/lotwreport.adi?login=<call>&password=<pwd>
+ *       &qso_query=1&qso_qsl=yes&qso_qsldetail=yes&qso_mydetail=yes&qso_qslsince=<date>
+ *
+ * Only QSL_RCVD=Y records are returned by LoTW for qso_qsl=yes, so every grid in the
+ * report is a *confirmed* grid (green on the map). GRIDSQUARE may be a 4- or 6-char
+ * value; VUCC_GRIDS ("EN52en,EN53fa") also yields 4-char fields. All values are
+ * truncated/expanded to the 4-char form used by the map overlay.
+ *
+ * ARRL rate-limits the report endpoint: one download in progress per user id, and
+ * frequent full-report pulls get refused. Failures are reported with an explicit
+ * cause (see LoTWResult) so the UI can tell the user what to do next.
+ */
+class LoTWRepository : ILoTWRepository {
+
+    override suspend fun fetchConfirmedGrids(callsign: String, password: String): LoTWResult =
+        withContext(Dispatchers.IO) {
+            fetchReportBody(callsign, password).fold(
+                onSuccess = { body ->
+                    parseBoth(body)?.let { (grids, _, roamed) ->
+                        LoTWResult.Success(grids, emptyMap(), roamed)
+                    } ?: LoTWResult.RateLimited
+                },
+                onFailure = { toResult(it) }
+            )
+        }
+
+    override suspend fun fetchConfirmedGridQsos(
+        callsign: String,
+        password: String
+    ): LoTWResult = withContext(Dispatchers.IO) {
+        fetchReportBody(callsign, password).fold(
+            onSuccess = { body ->
+                parseBoth(body)?.let { (grids, qsos, roamed) ->
+                    LoTWResult.Success(grids, qsos, roamed)
+                } ?: LoTWResult.RateLimited
+            },
+            onFailure = { toResult(it) }
+        )
+    }
+
+    internal fun toResult(e: Throwable): LoTWResult = when (e) {
+        is CredentialsException -> LoTWResult.BadCredentials
+        is RateLimitException -> LoTWResult.RateLimited
+        is TimeoutException -> LoTWResult.Timeout
+        else -> LoTWResult.NetworkError(e.message ?: e.javaClass.simpleName)
+    }
+
+    /** Single report fetch feeding the grid set, the per-QSO detail and the roamed set. */
+    private fun parseBoth(
+        body: String
+    ): Triple<Set<String>, Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>, Set<String>>? {
+        val grids = parseConfirmedGrids(body) ?: return null
+        val qsos = parseConfirmedGridQsos(body) ?: return null
+        val roamed = parseRoamedGrids(body) ?: return null
+        return Triple(grids, qsos, roamed)
+    }
+
+    private fun fetchReportBody(callsign: String, password: String): Result<String> {
+        val call = callsign.trim().uppercase()
+        val pwd = password.trim()
+        if (call.isBlank() || pwd.isBlank()) return Result.failure(IOException("empty credentials"))
+        // qso_qslsince with an early date forces a FULL confirmed-QSL report.
+        // Without it, LoTW applies a "system supplied default" since-date and
+        // only returns confirmations newer than the account's last query —
+        // subsequent syncs would return an empty/incremental report.
+        val since = "2000-01-01"
+        val query = buildString {
+            append("login=").append(URLEncoder.encode(call, "UTF-8"))
+            append("&password=").append(URLEncoder.encode(pwd, "UTF-8"))
+            append("&qso_query=1&qso_qsl=yes&qso_qsldetail=yes&qso_mydetail=yes")
+            append("&qso_qslsince=").append(URLEncoder.encode(since, "UTF-8"))
+        }
+        return try {
+            val connection = URL("$BASE_URL?$query").openConnection() as HttpURLConnection
+            // ARRL can be slow to accept connections from mobile networks
+            // (long TLS handshakes across the Pacific, occasional server-side
+            // queueing). 30s connect + 120s read gives the request enough
+            // headroom; the sync button stays disabled meanwhile so users
+            // see progress rather than a hung dialog.
+            connection.connectTimeout = 30_000
+            connection.readTimeout = 120_000
+            connection.requestMethod = "GET"
+            connection.setRequestProperty("Accept-Encoding", "gzip")
+            connection.instanceFollowRedirects = true
+            val code = connection.responseCode
+            if (code !in 200..299) {
+                connection.disconnect()
+                // Observed in the wild (CQRLOG #2422): LoTW answers a throttled
+                // report pull with HTTP 503 "Page request limit".
+                return if (code == 503 || code == 429) Result.failure(RateLimitException())
+                else Result.failure(IOException("HTTP $code"))
+            }
+            val stream = connection.inputStream
+            val body = ("gzip".equals(connection.contentEncoding, ignoreCase = true))
+                .let { gz -> if (gz) java.util.zip.GZIPInputStream(stream) else stream }
+                .bufferedReader().use { it.readText() }
+            connection.disconnect()
+            when {
+                // Login failure: HTTP 200 + HTML login page with the error text.
+                body.contains("incorrect", ignoreCase = true) &&
+                    body.contains("assword", ignoreCase = true) -> Result.failure(CredentialsException())
+                // Any other non-ADIF body: rate-limit refusal / server error page.
+                !body.contains("<eoh>", ignoreCase = true) -> Result.failure(RateLimitException())
+                else -> Result.success(body)
+            }
+        } catch (e: SocketTimeoutException) {
+            Result.failure(TimeoutException(e.message ?: "timed out"))
+        } catch (e: SSLException) {
+            Result.failure(IOException("TLS: ${e.message ?: "handshake failed"}"))
+        } catch (e: Exception) {
+            println("LoTWRepository fetch failure: $e")
+            Result.failure(IOException(e.message ?: e.javaClass.simpleName))
+        }
+    }
+
+    internal class CredentialsException : Exception("bad callsign/password")
+    internal class RateLimitException : Exception("report refused (rate limit / server error)")
+    internal class TimeoutException(message: String) : Exception(message)
+
+    internal fun parseConfirmedGridQsos(
+        body: String
+    ): Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>? {
+        if (!body.contains("<eoh>", ignoreCase = true)) return null
+        // One ADIF record = fields up to <EOR>. We buffer the fields we care
+        // about, then emit a GridQso on <EOR> when the record is a satellite
+        // QSO (PROP_MODE=SAT) carrying a grid.
+        val result = mutableMapOf<String, MutableList<com.rtbishop.look4sat.core.domain.model.GridQso>>()
+        var propMode: String? = null
+        var call = ""
+        var qsoDate = ""
+        var timeOn = ""
+        var satName = ""
+        var mode = ""
+        var bandUp = ""
+        var bandDown = ""
+        var dxcc: Int? = null
+        var country: String? = null
+        var cqz: Int? = null
+        var state: String? = null
+        val gridsInRecord = mutableListOf<String>()
+
+        fun emitRecord() {
+            if (propMode != "SAT" || gridsInRecord.isEmpty()) return
+            val epochMs = adifTimestampToEpoch(qsoDate, timeOn)
+            val qso = com.rtbishop.look4sat.core.domain.model.GridQso(
+                call = call, epochMs = epochMs, satName = satName,
+                mode = mode, bandUp = bandUp, bandDown = bandDown,
+                dxcc = dxcc, country = country, cqz = cqz, state = state
+            )
+            for (grid in gridsInRecord) {
+                result.getOrPut(grid) { mutableListOf() }.add(qso)
+            }
+        }
+
+        fun resetRecord() {
+            propMode = null; call = ""; qsoDate = ""; timeOn = ""
+            satName = ""; mode = ""; bandUp = ""; bandDown = ""
+            dxcc = null; country = null; cqz = null; state = null
+            gridsInRecord.clear()
+        }
+
+        for (raw in body.lineSequence()) {
+            val line = raw.trim()
+            when {
+                line.equals("<EOR>", ignoreCase = true) -> {
+                    emitRecord()
+                    resetRecord()
+                }
+                line.startsWith("<PROP_MODE:") ->
+                    propMode = adifValue(line).uppercase()
+                line.startsWith("<CALL:") ->
+                    call = adifValue(line).uppercase()
+                line.startsWith("<QSO_DATE:") ->
+                    qsoDate = adifValue(line)
+                line.startsWith("<TIME_ON:") ->
+                    timeOn = adifValue(line)
+                line.startsWith("<SAT_NAME:") ->
+                    satName = adifValue(line)
+                line.startsWith("<MODE:") ->
+                    mode = adifValue(line)
+                line.startsWith("<BAND_RX:") ->
+                    bandUp = adifValue(line).uppercase()
+                line.startsWith("<BAND:") && !line.startsWith("<BAND_RX:") ->
+                    bandDown = adifValue(line).uppercase()
+                line.startsWith("<DXCC:") ->
+                    dxcc = adifValue(line).toIntOrNull()
+                line.startsWith("<COUNTRY:") ->
+                    country = adifValue(line).ifBlank { null }
+                line.startsWith("<CQZ:") ->
+                    cqz = adifValue(line).toIntOrNull()
+                line.startsWith("<STATE:") ->
+                    state = adifValue(line).trim().ifBlank { null }?.let { normalizeState(it) }
+                line.startsWith("<GRIDSQUARE:") || line.startsWith("<VUCC_GRIDS:") -> {
+                    // VUCC_GRIDS holds a comma-separated list of grids
+                    // ("EN52en,EN53fa"), up to four for contacts spanning
+                    // several squares; split and keep every 4-char field.
+                    adifValue(line).split(',').forEach { grid ->
+                        val field = grid.trim().uppercase()
+                        if (field.length >= 4) gridsInRecord.add(field.take(4))
+                    }
+                }
+            }
+        }
+        return result
+    }
+
+    /** ADIF field value: "<GRIDSQUARE:4>OL62" -> "OL62". */
+    private fun adifValue(line: String): String =
+        line.substringAfter('>').substringBefore("E<").trim()
+
+    /**
+     * LoTW returns STATE as "CODE // NAME" (e.g. "HB // Hubei" for China,
+     * "34 // Tottori-ken" for Japan, "CA // California" for the US). The award
+     * statistics match on the short CODE only (China 2-letter province pinyin,
+     * Japan 2-digit prefecture, US 2-letter state), so strip the " // NAME"
+     * suffix here once, storing the clean code for every downstream consumer
+     * (persistence, AwardCalculator).
+     */
+    private fun normalizeState(raw: String): String = raw.substringBefore(" // ").trim()
+
+    /** "20260820" + "1130" (or "113000") -> UTC epoch ms; 0 when unparseable. */
+    private fun adifTimestampToEpoch(date: String, time: String): Long = try {
+        val d = date.trim()
+        val t = time.trim().padEnd(6, '0').take(6)
+        val fmt = java.time.format.DateTimeFormatterBuilder()
+            .appendPattern("yyyyMMddHHmmss")
+            .toFormatter()
+            .withZone(java.time.ZoneOffset.UTC)
+        java.time.Instant.from(fmt.parse(d + t)).toEpochMilli()
+    } catch (_: Exception) {
+        0L
+    }
+
+    internal fun parseConfirmedGrids(body: String): Set<String>? {
+        // LoTW answers with ADIF text; on bad credentials it returns a short error
+        // page without an <eoh> header terminator. Real reports always carry <eoh>
+        // (LoTW writes it lowercase). Match case-insensitively to be safe.
+        if (!body.contains("<eoh>", ignoreCase = true)) return null
+        val grids = mutableSetOf<String>()
+        // ADIF fields of one QSO record span multiple lines and are terminated by
+        // <EOR>. Satellite QSOs carry <PROP_MODE:3>SAT (plus <SAT_NAME>); ground
+        // QSOs omit it. Grid fields (GRIDSQUARE / VUCC_GRIDS) must only be
+        // collected for records whose PROP_MODE is SAT, otherwise the map mixes
+        // in terrestrial contacts.
+        //
+        // Buffered per-record pattern (same as parseConfirmedGridQsos): field order
+        // is NOT reliable — ADIF producers (incl. LoTW) emit fields alphabetically,
+        // so <GRIDSQUARE> (G) arrives BEFORE <PROP_MODE> (P) within a record. A
+        // sequential gate ("only add while propMode == SAT") silently drops every
+        // grid on real reports. Buffer the record and decide at <EOR> instead.
+        var propMode: String? = null
+        var pendingGrids = mutableListOf<String>()
+        for (raw in body.lineSequence()) {
+            val line = raw.trim()
+            when {
+                line.equals("<EOR>", ignoreCase = true) -> {
+                    if (propMode == "SAT") grids.addAll(pendingGrids)
+                    propMode = null
+                    pendingGrids = mutableListOf()
+                }
+                line.startsWith("<PROP_MODE:") -> {
+                    propMode = adifValue(line).uppercase()
+                }
+                line.startsWith("<GRIDSQUARE:") || line.startsWith("<VUCC_GRIDS:") -> {
+                    // VUCC_GRIDS holds a comma-separated PAIR of grids
+                    // ("EN52en,EN53fa") for contacts spanning two squares —
+                    // split on ',' and take the 4-char field of each, or the
+                    // second grid is silently dropped.
+                    val value = adifValue(line)
+                    value.split(',').forEach { grid ->
+                        val field = grid.trim().uppercase()
+                        if (field.length >= 4) pendingGrids.add(field.take(4))
+                    }
+                }
+            }
+        }
+        return grids
+    }
+
+    /**
+     * Distinct 4-char gridsquares the account itself operated from, taken from
+     * ADIF <MY_GRIDSQUARE> of satellite QSO records only. This is the
+     * "roamed / activated" set shown as blue stripes on the map — the grids
+     * where the operator's own station was located during confirmed QSOs (a
+     * rover may log several distinct grids; the home grid is included too).
+     * Returns null when the body is not an ADIF report (mirrors the other parsers).
+     */
+    internal fun parseRoamedGrids(body: String): Set<String>? {
+        if (!body.contains("<eoh>", ignoreCase = true)) return null
+        val grids = mutableSetOf<String>()
+        // Buffered per-record pattern (same as parseConfirmedGridQsos): field
+        // order is NOT reliable — ADIF producers (incl. LoTW) emit fields
+        // alphabetically, so <MY_GRIDSQUARE> (M) arrives BEFORE <PROP_MODE> (P)
+        // within a record. A sequential gate ("only add while propMode == SAT")
+        // would silently drop every own grid on real reports; buffer the record
+        // and decide at <EOR> instead.
+        var propMode: String? = null
+        var myGrid: String? = null
+        for (raw in body.lineSequence()) {
+            val line = raw.trim()
+            when {
+                line.equals("<EOR>", ignoreCase = true) -> {
+                    if (propMode == "SAT" && myGrid != null) grids.add(myGrid)
+                    propMode = null
+                    myGrid = null
+                }
+                line.startsWith("<PROP_MODE:") -> {
+                    propMode = adifValue(line).uppercase()
+                }
+                line.startsWith("<MY_GRIDSQUARE:") -> {
+                    // MY_GRIDSQUARE must not be mistaken for GRIDSQUARE (the
+                    // opposite station's grid) — only own-station grids count.
+                    val value = adifValue(line)
+                    if (value.length >= 4) myGrid = value.take(4)
+                }
+            }
+        }
+        return grids
+    }
+
+    private companion object {
+        const val BASE_URL = "https://lotw.arrl.org/lotwuser/lotwreport.adi"
+    }
+}

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

@@ -29,6 +29,7 @@ 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.WavelogSettings
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
 import com.rtbishop.look4sat.core.domain.utility.positionToQth
@@ -81,6 +82,7 @@ class SettingsRepo(
     private val keyStateOfUtc = "stateOfUtc"
     private val keyStateOfLightTheme = "stateOfLightTheme"
     private val keyStateOfNightMode = "stateOfNightMode"
+    private val keyStateOfMapGrid = "stateOfMapGrid"
     private val keyStationAltitude = "stationAltitude"
     private val keyStationLatitude = "stationLatitude"
     private val keyStationLongitude = "stationLongitude"
@@ -137,7 +139,156 @@ class SettingsRepo(
     }
     //endregion
 
-    //region # Passes filter settings
+    //region # Wavelog worked-grids settings
+    private val keyWavelogUrl = "wavelogUrl"
+    private val keyWavelogToken = "wavelogToken"
+    private val keyWorkedGrids = "workedGrids"
+
+    private val _wavelogSettings = MutableStateFlow(getWavelogSettings())
+    override val wavelogSettings: StateFlow<WavelogSettings> = _wavelogSettings
+
+    override fun updateWavelogSettings(settings: WavelogSettings) {
+        preferences.edit {
+            putString(keyWavelogUrl, settings.url.trim())
+            putString(keyWavelogToken, settings.token.trim())
+        }
+        _wavelogSettings.value = settings.copy(url = settings.url.trim(), token = settings.token.trim())
+    }
+
+    private fun getWavelogSettings(): WavelogSettings = WavelogSettings(
+        url = preferences.getString(keyWavelogUrl, null).orEmpty(),
+        token = preferences.getString(keyWavelogToken, null).orEmpty()
+    )
+
+    override fun getWorkedGrids(): Set<String> {
+        val json = preferences.getString(keyWorkedGrids, null).orEmpty()
+        if (json.isBlank()) return emptySet()
+        return try {
+            val array = org.json.JSONArray(json)
+            (0 until array.length()).mapNotNull { i ->
+                array.optString(i).takeIf { it.isNotBlank() }
+            }.toSet()
+        } catch (_: Exception) {
+            emptySet()
+        }
+    }
+
+    override fun setWorkedGrids(grids: Set<String>) {
+        val array = org.json.JSONArray()
+        grids.sorted().forEach { array.put(it) }
+        preferences.edit { putString(keyWorkedGrids, array.toString()) }
+    }
+
+    // Confirmed satellite QSOs per worked gridsquare, persisted as a single JSON
+    // object: {"OL62":[{"c":call,"t":epochMs,"s":sat,"m":mode,"bu":up,"bd":down}]}.
+    private val keyWorkedGridQsos = "workedGridQsos"
+
+    override fun getWorkedGridQsos(): Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>> {
+        val json = preferences.getString(keyWorkedGridQsos, null).orEmpty()
+        if (json.isBlank()) return emptyMap()
+        return try {
+            val root = org.json.JSONObject(json)
+            val result = mutableMapOf<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>()
+            for (grid in root.keys()) {
+                val array = root.optJSONArray(grid) ?: continue
+                val list = (0 until array.length()).mapNotNull { i ->
+                    val o = array.optJSONObject(i) ?: return@mapNotNull null
+                    com.rtbishop.look4sat.core.domain.model.GridQso(
+                        call = o.optString("c"),
+                        epochMs = o.optLong("t"),
+                        satName = o.optString("s"),
+                        mode = o.optString("m"),
+                        bandUp = o.optString("bu"),
+                        bandDown = o.optString("bd"),
+                        // New award fields: absent in pre-award data -> null.
+                        dxcc = o.optInt("dx", 0).takeIf { it > 0 },
+                        country = o.optString("cty").ifBlank { null },
+                        cqz = o.optInt("cq", 0).takeIf { it > 0 },
+                        state = o.optString("st").ifBlank { null }
+                    )
+                }
+                if (list.isNotEmpty()) result[grid] = list
+            }
+            result
+        } catch (_: Exception) {
+            emptyMap()
+        }
+    }
+
+    override fun setWorkedGridQsos(qsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>) {
+        val root = org.json.JSONObject()
+        for ((grid, list) in qsos) {
+            val array = org.json.JSONArray()
+            for (q in list) {
+                array.put(
+                    org.json.JSONObject()
+                        .put("c", q.call)
+                        .put("t", q.epochMs)
+                        .put("s", q.satName)
+                        .put("m", q.mode)
+                        .put("bu", q.bandUp)
+                        .put("bd", q.bandDown)
+                        .put("dx", q.dxcc ?: 0)
+                        .put("cty", q.country ?: "")
+                        .put("cq", q.cqz ?: 0)
+                        .put("st", q.state ?: "")
+                )
+            }
+            root.put(grid, array)
+        }
+        preferences.edit { putString(keyWorkedGridQsos, root.toString()) }
+    }
+
+    // Distinct 4-char gridsquares the account operated from (LoTW <MY_GRIDSQUARE>,
+    // satellite QSOs only). Stored as a JSONArray like workedGrids.
+    private val keyRoamedGrids = "roamedGrids"
+
+    override fun getRoamedGrids(): Set<String> {
+        val json = preferences.getString(keyRoamedGrids, null).orEmpty()
+        if (json.isBlank()) return emptySet()
+        return try {
+            val array = org.json.JSONArray(json)
+            (0 until array.length()).mapNotNull { i ->
+                array.optString(i).takeIf { it.isNotBlank() }
+            }.toSet()
+        } catch (_: Exception) {
+            emptySet()
+        }
+    }
+
+    override fun setRoamedGrids(grids: Set<String>) {
+        val array = org.json.JSONArray()
+        grids.sorted().forEach { array.put(it) }
+        preferences.edit { putString(keyRoamedGrids, array.toString()) }
+    }
+
+    // LoTW credentials (stored locally on the device only)
+    private val keyLoTWCall = "lotwCallsign"
+    private val keyLoTWPass = "lotwPassword"
+
+    override val lotwSettings: kotlinx.coroutines.flow.StateFlow<com.rtbishop.look4sat.core.domain.model.LoTWSettings>
+        get() = _lotwSettings
+    private val _lotwSettings = MutableStateFlow(getLoTWSettings())
+
+    override fun updateLoTWSettings(settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings) {
+        preferences.edit {
+            putString(keyLoTWCall, settings.callsign.trim().uppercase())
+            putString(keyLoTWPass, settings.password)
+        }
+        _lotwSettings.value = settings.copy(
+            callsign = settings.callsign.trim().uppercase(),
+            password = settings.password
+        )
+    }
+
+    private fun getLoTWSettings(): com.rtbishop.look4sat.core.domain.model.LoTWSettings =
+        com.rtbishop.look4sat.core.domain.model.LoTWSettings(
+            callsign = preferences.getString(keyLoTWCall, null).orEmpty(),
+            password = preferences.getString(keyLoTWPass, null).orEmpty()
+        )
+    //endregion
+
+    //region # Transceivers settings
     private val _passesSettings = MutableStateFlow(getPassesSettings())
     override val passesSettings: StateFlow<PassesSettings> = _passesSettings
 
@@ -371,6 +522,7 @@ class SettingsRepo(
                 putBoolean(keyStateOfUtc, new.stateOfUtc)
                 putBoolean(keyStateOfLightTheme, new.stateOfLightTheme)
                 putBoolean(keyStateOfNightMode, new.stateOfNightMode)
+                putBoolean(keyStateOfMapGrid, new.stateOfMapGrid)
                 putBoolean(keyShouldSeeWarning, new.shouldSeeWarning)
                 putBoolean(keyShouldSeeWhatsNew, new.shouldSeeWhatsNew)
                 putString(keySstvMode, new.sstvMode)
@@ -388,6 +540,7 @@ class SettingsRepo(
         stateOfUtc = preferences.getBoolean(keyStateOfUtc, false),
         stateOfLightTheme = preferences.getBoolean(keyStateOfLightTheme, false),
         stateOfNightMode = preferences.getBoolean(keyStateOfNightMode, false),
+        stateOfMapGrid = preferences.getBoolean(keyStateOfMapGrid, false),
         shouldSeeWarning = preferences.getBoolean(keyShouldSeeWarning, true),
         shouldSeeWhatsNew = preferences.getBoolean(keyShouldSeeWhatsNew, true),
         sstvMode = preferences.getString(keySstvMode, null) ?: "Auto",

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

@@ -5,7 +5,6 @@ import com.rtbishop.look4sat.core.domain.repository.IUpdateRepository
 import com.rtbishop.look4sat.core.domain.source.IRemoteSource
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
-import org.json.JSONObject
 import java.io.File
 
 class UpdateRepository(
@@ -13,15 +12,25 @@ class UpdateRepository(
 ) : IUpdateRepository {
 
     override suspend fun getLatestRelease(): LatestRelease? = withContext(Dispatchers.IO) {
-        val result = remoteSource.getNetworkStream(LATEST_RELEASE_URL)
-        val stream = result.stream ?: return@withContext null
-        try {
-            val json = stream.bufferedReader().use { it.readText() }
-            parseRelease(json)
-        } catch (e: Exception) {
-            println("UpdateRepository parse failure: $e")
-            null
+        // Use the GitHub releases web page instead of the REST API endpoint:
+        // the API endpoint is rate-limited to 60 requests/hour per IP, which is
+        // quickly exhausted on shared egress IPs (e.g. VPN proxies), causing 403
+        // failures. The web endpoint redirects to the latest tag with no such limit.
+        // When GitHub is unreachable (common on mainland-China networks without a
+        // proxy), fall back to community GitHub accelerator mirrors that proxy the
+        // same page; each mirror resolves the identical tag and asset URLs.
+        for (baseUrl in LATEST_RELEASE_URLS) {
+            val result = remoteSource.getNetworkStream(baseUrl)
+            val stream = result.stream ?: continue
+            val parsed = try {
+                parseRelease(stream.bufferedReader().use { it.readText() }, baseUrl)
+            } catch (e: Exception) {
+                println("UpdateRepository parse failure: $e")
+                null
+            }
+            if (parsed != null) return@withContext parsed
         }
+        null
     }
 
     override suspend fun downloadApk(url: String, dest: File): Boolean = withContext(Dispatchers.IO) {
@@ -37,31 +46,61 @@ class UpdateRepository(
         }
     }
 
-    private fun parseRelease(json: String): LatestRelease? {
-        val obj = JSONObject(json)
-        val tag = obj.optString("tag_name")
-        if (tag.isBlank()) return null
-        val assets = obj.optJSONArray("assets")
-        var apkUrl: String? = null
-        if (assets != null) {
-            for (i in 0 until assets.length()) {
-                val asset = assets.optJSONObject(i) ?: continue
-                val name = asset.optString("name", "")
-                if (name.endsWith(".apk")) {
-                    apkUrl = asset.optString("browser_download_url", "").ifBlank { null }
-                    if (apkUrl != null) break
-                }
-            }
+    private fun parseRelease(html: String, sourceUrl: String): LatestRelease? {
+        // The redirect target is the latest release's tag page. Extract the tag
+        // from the og:url meta tag ("…/releases/tag/v4.4.6-ba7opf.8") — stable and
+        // unambiguous. The <title> also holds the release name, but that is free
+        // text and cannot be used to build the asset URL.
+        val ogUrl = Regex("<meta\\s+property=\"og:url\"\\s+content=\"([^\"]*)\"").find(html)
+            ?.groupValues?.get(1) ?: return null
+        val tag = Regex("/releases/tag/(v[0-9][0-9A-Za-z.\\-]*)$").find(ogUrl)
+            ?.groupValues?.get(1) ?: return null
+        val title = Regex("<title>(.*?)</title>", RegexOption.DOT_MATCHES_ALL)
+            .find(html)?.groupValues?.get(1)?.trim()
+            ?.substringBefore("·")?.removePrefix("Release")?.trim() ?: tag
+        // Release notes live in the page's markdown-body section (first occurrence
+        // is the release description). Strip HTML tags for plain-text display.
+        val raw = Regex("<div[^>]*class=\"[^\"]*markdown-body[^\"]*\"[^>]*>(.*?)</div>", RegexOption.DOT_MATCHES_ALL)
+            .find(html)?.groupValues?.get(1) ?: ""
+        val body = raw.replace(Regex("<[^>]+>"), "")
+            .replace("&lt;", "<").replace("&gt;", ">").replace("&amp;", "&")
+            .replace("&quot;", "\"").replace("&#39;", "'")
+            .trim()
+        // The release APK asset naming: Look4Sat-<tag without leading v>.apk
+        // (since v4.4.6-ba7opf.9.9 the releases are uploaded with the bare
+        // versioned filename, no "-release" suffix). When the page was fetched
+        // through an accelerator mirror (https://<mirror>/https://github.com/...),
+        // download through the same mirror — raw github.com is unreachable on the
+        // networks that needed the mirror in the first place.
+        val mirrorPrefix = sourceUrl.substringBefore("https://github.com")
+        val apkName = "Look4Sat-${tag.removePrefix("v")}.apk"
+        val apkUrl = if (mirrorPrefix.isEmpty()) {
+            "$DOWNLOAD_BASE_URL/$tag/$apkName"
+        } else {
+            "${mirrorPrefix}https://github.com/atsunatsu/Look4Sat/releases/download/$tag/$apkName"
         }
         return LatestRelease(
             versionTag = tag,
-            title = obj.optString("name", ""),
-            body = obj.optString("body", ""),
+            title = title,
+            body = body,
             apkUrl = apkUrl
         )
     }
 
     private companion object {
-        const val LATEST_RELEASE_URL = "https://api.github.com/repos/atsunatsu/Look4Sat/releases/latest"
+        // Web pages are used instead of api.github.com to avoid the 60 req/hour
+        // anonymous rate limit (see getLatestRelease above). The GitHub URL is
+        // tried first; if it is unreachable (no proxy on mainland networks) the
+        // accelerator mirrors are tried in order. Download URLs always point at
+        // the mirrors too — raw github.com release downloads are equally blocked
+        // without a proxy, so a mirror-resolved tag must be downloaded via the
+        // same mirror.
+        val LATEST_RELEASE_URLS = listOf(
+            "https://github.com/atsunatsu/Look4Sat/releases/latest",
+            "https://ghfast.top/https://github.com/atsunatsu/Look4Sat/releases/latest",
+            "https://gh.llkk.cc/https://github.com/atsunatsu/Look4Sat/releases/latest",
+            "https://github.moeyy.xyz/https://github.com/atsunatsu/Look4Sat/releases/latest"
+        )
+        const val DOWNLOAD_BASE_URL = "https://github.com/atsunatsu/Look4Sat/releases/download"
     }
 }

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

@@ -0,0 +1,97 @@
+/*
+ * 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.data.repository
+
+import com.rtbishop.look4sat.core.domain.repository.IWavelogRepository
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import org.json.JSONArray
+import org.json.JSONObject
+
+/**
+ * Fetches the list of worked gridsquares from a self-hosted Wavelog instance.
+ *
+ * Uses the Wavelog v1 API endpoint (verified against Wavelog 3.0.2):
+ *   POST {base}/index.php/api/logbook_get_worked_grids
+ *   Body: {"key": "<api key>", "logbook_id": "<logbook id>"}
+ *   Response 201: JSON array of 4-char gridsquares, e.g. ["JN47","JO30"]
+ *   (see Wavelog Api.php logbook_get_worked_grids / Api_model::get_grids_worked_in_logbook)
+ *
+ * The token field carries "<api_key>:<logbook_id>" so one credential line
+ * configures both values (the dialog explains this to the user).
+ */
+class WavelogRepository : IWavelogRepository {
+
+    override suspend fun fetchWorkedGrids(url: String, token: String): Set<String>? = withContext(Dispatchers.IO) {
+        val parts = token.trim().split(":")
+        val apiKey = parts.getOrNull(0)?.trim().orEmpty()
+        val logbookId = parts.getOrNull(1)?.trim().orEmpty()
+        if (url.isBlank() || apiKey.isBlank() || logbookId.isBlank()) return@withContext null
+        val base = url.trim().trimEnd('/')
+        val requestUrl = "$base/index.php/api/logbook_get_worked_grids"
+        try {
+            val connection = java.net.URL(requestUrl).openConnection() as java.net.HttpURLConnection
+            connection.connectTimeout = 10_000
+            connection.readTimeout = 15_000
+            connection.requestMethod = "POST"
+            connection.doOutput = true
+            connection.setRequestProperty("Content-Type", "application/json")
+            val body = JSONObject().apply {
+                put("key", apiKey)
+                put("logbook_id", logbookId)
+            }.toString().toByteArray()
+            connection.outputStream.use { it.write(body) }
+            val code = connection.responseCode
+            if (code !in 200..299) {
+                connection.disconnect()
+                return@withContext null
+            }
+            val response = connection.inputStream.bufferedReader().use { it.readText() }
+            connection.disconnect()
+            parseWorkedGrids(response)
+        } catch (e: Exception) {
+            println("WavelogRepository fetch failure: $e")
+            null
+        }
+    }
+
+    internal fun parseWorkedGrids(body: String): Set<String>? {
+        return try {
+            val array = when {
+                body.trimStart().startsWith("[") -> JSONArray(body)
+                else -> {
+                    // Tolerate {"grids": [...]} wrappers too
+                    JSONObject(body).optJSONArray("grids") ?: return null
+                }
+            }
+            val result = mutableSetOf<String>()
+            for (i in 0 until array.length()) {
+                val grid = array.optString(i, "").trim().uppercase()
+                // Keep only well-formed 4-character Maidenhead squares (e.g. OL62)
+                if (grid.length == 4 && grid[0] in 'A'..'R' && grid[1] in 'A'..'R'
+                    && grid[2] in '0'..'9' && grid[3] in '0'..'9'
+                ) {
+                    result.add(grid)
+                }
+            }
+            result
+        } catch (_: Exception) {
+            null
+        }
+    }
+}

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

@@ -19,6 +19,7 @@ package com.rtbishop.look4sat.core.data.repository
 
 import com.rtbishop.look4sat.core.domain.model.DataSourcesSettings
 import com.rtbishop.look4sat.core.domain.model.DatabaseState
+import com.rtbishop.look4sat.core.domain.model.GridQso
 import com.rtbishop.look4sat.core.domain.model.OtherSettings
 import com.rtbishop.look4sat.core.domain.model.PassesSettings
 import com.rtbishop.look4sat.core.domain.model.RCSettings
@@ -214,7 +215,10 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
     )
 
     override val otherSettings: StateFlow<OtherSettings> = MutableStateFlow(
-        OtherSettings(false, false, false, false, false, false, false, false)
+        OtherSettings(
+            false, false, false, false, false, false, false,
+            shouldSeeWarning = false, shouldSeeWhatsNew = false
+        )
     )
 
     override val dataSourcesSettings: MutableStateFlow<DataSourcesSettings> = MutableStateFlow(dataSources)
@@ -270,6 +274,36 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
     override fun getAmSatCallsign(): String = ""
 
     override fun setAmSatCallsign(callsign: String) = Unit
+
+    override val wavelogSettings: StateFlow<com.rtbishop.look4sat.core.domain.model.WavelogSettings> =
+        MutableStateFlow(com.rtbishop.look4sat.core.domain.model.WavelogSettings())
+
+    override fun updateWavelogSettings(settings: com.rtbishop.look4sat.core.domain.model.WavelogSettings) = Unit
+
+    override fun getWorkedGrids(): Set<String> = emptySet()
+
+    private val workedGrids = MutableStateFlow(emptySet<String>())
+
+    override fun setWorkedGrids(grids: Set<String>) {
+        workedGrids.value = grids
+    }
+
+    override val lotwSettings: StateFlow<com.rtbishop.look4sat.core.domain.model.LoTWSettings> =
+        MutableStateFlow(com.rtbishop.look4sat.core.domain.model.LoTWSettings())
+
+    override fun updateLoTWSettings(settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings) = Unit
+
+    override fun getWorkedGridQsos(): Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>> = emptyMap()
+
+    override fun setWorkedGridQsos(qsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>) = Unit
+
+    override fun getRoamedGrids(): Set<String> = emptySet()
+
+    private val roamedGrids = MutableStateFlow(emptySet<String>())
+
+    override fun setRoamedGrids(grids: Set<String>) {
+        roamedGrids.value = grids
+    }
 }
 
 private fun defaultDataSourcesSettings(): DataSourcesSettings {

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

@@ -0,0 +1,293 @@
+package com.rtbishop.look4sat.core.data.repository
+
+import com.rtbishop.look4sat.core.domain.repository.LoTWResult
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNull
+import org.junit.Test
+
+class LoTWRepositoryTest {
+
+    private val repo = LoTWRepository()
+
+    private fun report(vararg records: String): String =
+        buildString {
+            append("<ADIF_VERS:5>3.1.4\n")
+            append("<PROGRAMID:8>look4sat\n")
+            append("<eoh>\n")
+            records.forEach { append(it).append("\n") }
+        }
+
+    @Test
+    fun parseRejectsBodyWithoutEoh() {
+        assertNull(repo.parseConfirmedGrids("<HTML>Username/password incorrect</HTML>"))
+    }
+
+    @Test
+    fun parseCollectsOnlySatelliteGrids() {
+        // Satellite QSO: PROP_MODE SAT, confirmed, opponent grid.
+        val satQso = "<CALL:6>BA7OPF\n" +
+            "<QSO_DATE:8>20260820\n" +
+            "<PROP_MODE:3>SAT\n" +
+            "<SAT_NAME:5>FO-29\n" +
+            "<GRIDSQUARE:4>NL47\n" +
+            "<EOR>\n"
+        // Ground QSO: same grid but no PROP_MODE -> must be excluded.
+        val groundQso = "<CALL:6>BA7OPF\n" +
+            "<QSO_DATE:8>20260821\n" +
+            "<GRIDSQUARE:4>NL47\n" +
+            "<EOR>\n"
+        val result = repo.parseConfirmedGrids(report(satQso, groundQso))
+        assertEquals(setOf("NL47"), result)
+    }
+
+    @Test
+    fun parseSupportsVuccGridPairsAndSixCharGrids() {
+        val satQso = "<PROP_MODE:3>SAT\n" +
+            "<SAT_NAME:5>SO-50\n" +
+            "<GRIDSQUARE:6>OM60IL\n" +
+            "<VUCC_GRIDS:11>EN52en,EN53fa\n" +
+            "<EOR>\n"
+        val result = repo.parseConfirmedGrids(report(satQso))
+        assertEquals(setOf("OM60", "EN52", "EN53"), result)
+    }
+
+    @Test
+    fun parsePropModeDoesNotLeakAcrossRecords() {
+        // PROP_MODE SAT record first, then a ground QSO with a grid — the second
+        // record must not inherit the satellite flag after its own <EOR>.
+        val satQso = "<PROP_MODE:3>SAT\n<GRIDSQUARE:4>OL62\n<EOR>\n"
+        val groundQso = "<GRIDSQUARE:4>PM00\n<EOR>\n"
+        val result = repo.parseConfirmedGrids(report(satQso, groundQso))
+        assertEquals(setOf("OL62"), result)
+    }
+
+    @Test
+    fun parseHandlesAlphabeticalFieldOrder() {
+        // Real lotwreport.adi emits fields in ALPHABETICAL order: GRIDSQUARE (G)
+        // and VUCC_GRIDS come BEFORE PROP_MODE (P) inside each record. The old
+        // sequential gate (add only while propMode == SAT) dropped every grid on
+        // real reports — the buffered parser must collect them regardless of
+        // field order and filter at <EOR>.
+        val satQso = "<CALL:6>BA7OPF\n" +
+            "<GRIDSQUARE:4>NL47\n" +
+            "<MODE:3>FM\n" +
+            "<PROP_MODE:3>SAT\n" +
+            "<SAT_NAME:5>FO-29\n" +
+            "<VUCC_GRIDS:11>EN52en,EN53fa\n" +
+            "<EOR>\n"
+        val groundQso = "<CALL:6>BA7OPF\n" +
+            "<GRIDSQUARE:4>PM95\n" +
+            "<QSO_DATE:8>20260821\n" +
+            "<EOR>\n"
+        val result = repo.parseConfirmedGrids(report(satQso, groundQso))
+        assertEquals(setOf("NL47", "EN52", "EN53"), result)
+    }
+
+    @Test
+    fun parseReturnsEmptySetForReportWithoutGrids() {
+        val satQso = "<PROP_MODE:3>SAT\n<SAT_NAME:5>AO-07\n<EOR>\n"
+        assertEquals(emptySet<String>(), repo.parseConfirmedGrids(report(satQso)))
+    }
+
+    // region parseConfirmedGridQsos
+
+    private val satQsoFull = "<CALL:5>A50QO\n" +
+        "<QSO_DATE:8>20260820\n" +
+        "<TIME_ON:6>113045\n" +
+        "<PROP_MODE:3>SAT\n" +
+        "<SAT_NAME:5>FO-29\n" +
+        "<MODE:2>CW\n" +
+        "<BAND:3>70CM\n" +
+        "<BAND_RX:3>2M\n" +
+        "<GRIDSQUARE:4>NL47\n" +
+        "<EOR>\n"
+
+    @Test
+    fun parseQsosExtractsSatelliteDetail() {
+        val result = repo.parseConfirmedGridQsos(report(satQsoFull))!!
+        val qsos = result["NL47"]!!
+        assertEquals(1, qsos.size)
+        val qso = qsos[0]
+        assertEquals("A50QO", qso.call)
+        assertEquals("FO-29", qso.satName)
+        assertEquals("CW", qso.mode)
+        assertEquals("2M", qso.bandUp)
+        assertEquals("70CM", qso.bandDown)
+        assertEquals("V/U", qso.bandLabel)
+        assertEquals(2026, java.time.Instant.ofEpochMilli(qso.epochMs).atZone(java.time.ZoneOffset.UTC).year)
+    }
+
+    @Test
+    fun parseQsosExcludesGroundQsos() {
+        val groundQso = "<CALL:6>BA7OPF\n<QSO_DATE:8>20260821\n<GRIDSQUARE:4>NL47\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(satQsoFull, groundQso))!!
+        assertEquals(1, result["NL47"]!!.size)
+    }
+
+    @Test
+    fun parseQsosVuccPairFeedsBothGrids() {
+        val qso = "<PROP_MODE:3>SAT\n<SAT_NAME:5>SO-50\n" +
+            "<QSO_DATE:8>20260819\n<TIME_ON:4>1231\n" +
+            "<VUCC_GRIDS:11>EN52en,EN53fa\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(qso))!!
+        assertEquals(setOf("EN52", "EN53"), result.keys)
+        assertEquals(result["EN52"]!!.first(), result["EN53"]!!.first())
+    }
+
+    @Test
+    fun parseQsosVuccQuadrupleFeedsAllFourGrids() {
+        // VUCC allows up to four grids in one contact.
+        val qso = "<PROP_MODE:3>SAT\n<SAT_NAME:5>SO-50\n" +
+            "<QSO_DATE:8>20260819\n<TIME_ON:4>1231\n" +
+            "<VUCC_GRIDS:23>EN52en,EN53fa,EN42gj,EN43kh\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(qso))!!
+        assertEquals(setOf("EN52", "EN53", "EN42", "EN43"), result.keys)
+        result.values.forEach { assertEquals(1, it.size) }
+    }
+
+    @Test
+    fun parseQsosRejectsBodyWithoutEoh() {
+        assertNull(repo.parseConfirmedGridQsos("<HTML>Username/password incorrect</HTML>"))
+    }
+
+    // endregion
+
+    // region parseRoamedGrids (MY_GRIDSQUARE = grids the account operated from)
+
+    @Test
+    fun parseRoamedGridsCollectsOwnStationGrids() {
+        // Satellite QSOs carry MY_GRIDSQUARE = the grid the account itself
+        // operated from (the "roamed/activated" set shown as blue stripes).
+        val qso1 = "<CALL:6>BA7OPF\n<QSO_DATE:8>20260820\n<PROP_MODE:3>SAT\n<SAT_NAME:5>IO-86\n" +
+            "<MY_GRIDSQUARE:4>OL62\n<GRIDSQUARE:4>PM95\n<EOR>\n"
+        val qso2 = "<CALL:6>BA7OPF\n<QSO_DATE:8>20260901\n<PROP_MODE:3>SAT\n<SAT_NAME:5>IO-86\n" +
+            "<MY_GRIDSQUARE:4>OL72\n<GRIDSQUARE:4>NL47\n<EOR>\n"
+        assertEquals(setOf("OL62", "OL72"), repo.parseRoamedGrids(report(qso1, qso2)))
+    }
+
+    @Test
+    fun parseRoamedGridsIgnoresGroundQsos() {
+        val ground = "<CALL:6>BA7OPF\n<QSO_DATE:8>20260821\n<MY_GRIDSQUARE:4>OL72\n<EOR>\n"
+        assertEquals(emptySet<String>(), repo.parseRoamedGrids(report(ground)))
+    }
+
+    @Test
+    fun parseRoamedGridsDoesNotConfuseGridsquareWithMyGridsquare() {
+        // GRIDSQUARE (opposite station's grid) must never leak into the roamed set.
+        val qso = "<PROP_MODE:3>SAT\n<SAT_NAME:5>SO-50\n<MY_GRIDSQUARE:4>OL62\n" +
+            "<GRIDSQUARE:6>OM60IL\n<EOR>\n"
+        assertEquals(setOf("OL62"), repo.parseRoamedGrids(report(qso)))
+    }
+
+    @Test
+    fun parseRoamedGridsTruncatesSixCharToFour() {
+        val qso = "<PROP_MODE:3>SAT\n<SAT_NAME:5>IO-86\n<MY_GRIDSQUARE:6>OL62AA\n<EOR>\n"
+        assertEquals(setOf("OL62"), repo.parseRoamedGrids(report(qso)))
+    }
+
+    @Test
+    fun parseRoamedGridsHandlesAlphabeticalFieldOrder() {
+        // Real lotwreport.adi emits fields alphabetically, so <MY_GRIDSQUARE>
+        // (M) arrives BEFORE <PROP_MODE> (P). The old sequential gate (add only
+        // while propMode == SAT) silently returned an EMPTY set on real reports —
+        // this is the exact bug that made the blue roamed stripes never appear.
+        val qso = "<CALL:6>BA7OPF\n" +
+            "<GRIDSQUARE:4>PM95\n" +
+            "<MY_GRIDSQUARE:6>OL72XX\n" +
+            "<PROP_MODE:3>SAT\n" +
+            "<SAT_NAME:5>IO-86\n" +
+            "<EOR>\n"
+        assertEquals(setOf("OL72"), repo.parseRoamedGrids(report(qso)))
+    }
+
+    @Test
+    fun parseRoamedGridsRejectsBodyWithoutEoh() {
+        assertNull(repo.parseRoamedGrids("<HTML>Username/password incorrect</HTML>"))
+    }
+
+    // endregion
+
+    // region failure classification (fetchReportBody -> LoTWResult mapping)
+
+    @Test
+    fun failureClassificationMapsEachException() {
+        // LoTWRepository.toResult() must keep each failure cause distinct so
+        // the UI can show a specific message per cause.
+        assertEquals(
+            LoTWResult.BadCredentials,
+            repo.toResult(LoTWRepository.CredentialsException())
+        )
+        assertEquals(
+            LoTWResult.RateLimited,
+            repo.toResult(LoTWRepository.RateLimitException())
+        )
+        assertEquals(
+            LoTWResult.Timeout,
+            repo.toResult(LoTWRepository.TimeoutException("read timed out"))
+        )
+        val net = repo.toResult(java.io.IOException("HTTP 500"))
+        assertEquals(LoTWResult.NetworkError("HTTP 500"), net)
+    }
+
+
+    @Test
+    fun parseQsosExtractsAwardFields() {
+        // Award statistics rely on the DXCC/CQZ/STATE fields coming straight
+        // from LoTW's qso_qsldetail report (STATE depends on DXCC). LoTW
+        // writes STATE as "CODE // NAME" (verified with a real report 2026-09);
+        // the parser must strip the name suffix and keep the bare code.
+        val qso = "<CALL:5>BG7XYZ\n" +
+            "<QSO_DATE:8>20260820\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>FO-29\n<MODE:2>CW\n" +
+            "<DXCC:3>318\n<COUNTRY:5>CHINA\n<CQZ:2>24\n<STATE:13>GD // Guangdong\n" +
+            "<GRIDSQUARE:4>OL62\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(qso))!!
+        val parsed = result["OL62"]!!.first()
+        assertEquals(318, parsed.dxcc)
+        assertEquals("CHINA", parsed.country)
+        assertEquals(24, parsed.cqz)
+        assertEquals("GD", parsed.state)
+    }
+
+    @Test
+    fun parseQsosStripsStateNameSuffixForAllEntities() {
+        // Japan prefecture: "34 // Tottori-ken" -> "34" (WAJA matching needs
+        // the 2-digit code). US states also arrive as "CODE // Name".
+        val jp = "<CALL:5>JH0ABC\n<QSO_DATE:8>20260820\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>RS-44\n<DXCC:3>339\n<COUNTRY:7>JAPAN\n" +
+            "<STATE:18>34 // Tottori-ken\n<GRIDSQUARE:4>PM95\n<EOR>\n"
+        val us = "<CALL:5>K1ABC\n<QSO_DATE:8>20260820\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>AO-07\n<DXCC:3>291\n<COUNTRY:12>UNITED STATES\n" +
+            "<STATE:22>CA // California\n<GRIDSQUARE:4>EM40\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(jp, us))!!
+        assertEquals("34", result["PM95"]!!.first().state)
+        assertEquals("CA", result["EM40"]!!.first().state)
+    }
+
+    @Test
+    fun parseQsosLeavesAwardFieldsNullWhenAbsent() {
+        val qso = "<CALL:5>JH0ABC\n<QSO_DATE:8>20260820\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>RS-44\n<GRIDSQUARE:4>PM95\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(qso))!!
+        val parsed = result["PM95"]!!.first()
+        assertNull(parsed.dxcc)
+        assertNull(parsed.country)
+        assertNull(parsed.cqz)
+        assertNull(parsed.state)
+    }
+
+    @Test
+    fun parseQsosAwardFieldsDoNotLeakAcrossRecords() {
+        val withFields = "<CALL:5>BG7AAA\n<QSO_DATE:8>20260820\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>FO-29\n<DXCC:3>318\n<CQZ:2>24\n<STATE:2>GD\n" +
+            "<GRIDSQUARE:4>OL62\n<EOR>\n"
+        val withoutFields = "<CALL:5>JH0BBB\n<QSO_DATE:8>20260821\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>RS-44\n<GRIDSQUARE:4>PM95\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(withFields, withoutFields))!!
+        assertNull(result["PM95"]!!.first().dxcc)
+        assertNull(result["PM95"]!!.first().cqz)
+        assertNull(result["PM95"]!!.first().state)
+    }
+
+    // endregion
+}

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

@@ -0,0 +1,194 @@
+/*
+ * 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
+
+/**
+ * Award progress computed from the confirmed-QSO store.
+ *
+ * @param type      which award
+ * @param workedKeys matching keys for the boundary assets: each is compared
+ *                   against the region "code" field of the award's GeoJSON
+ *                   (e.g. WAPC -> "GD", WAJA -> "34", WAZ -> "24",
+ *                   WAS -> "CA", DXCC -> "318", VUCC -> "OL62").
+ * @param count     distinct worked units (grids / entities / provinces / ...)
+ * @param target    units required for the award
+ */
+data class AwardProgress(
+    val type: AwardType,
+    val workedKeys: Set<String>,
+    val count: Int,
+    val target: Int
+)
+
+enum class AwardType { DXCC, VUCC, WAPC, WAJA, WAZ, WAS }
+
+object AwardTargets {
+    const val DXCC = 100
+    const val VUCC = 100
+    const val WAPC = 34
+    const val WAJA = 47
+    const val WAZ = 40
+    const val WAS = 50
+}
+
+/**
+ * Derives six-award progress from the confirmed QSO store.
+ *
+ * Award rules (ADIF / award-program semantics):
+ *  - VUCC: distinct 4-char gridsquares.
+ *  - DXCC: distinct ARRL DXCC entities (from the QSO's dxcc field; falls back
+ *    to a callsign-prefix guess when LoTW omitted it).
+ *  - WAPC: distinct Chinese provinces (31 mainland STATE codes) plus the
+ *    Hong Kong / Macao / Taiwan entities (counted as their own provinces).
+ *  - WAJA: distinct Japanese prefectures (STATE code "01".."47").
+ *  - WAZ: distinct CQ zones.
+ *  - WAS: distinct US states (STATE abbreviations).
+ *
+ * The ADIF STATE field's meaning depends on the DXCC entity
+ * ("STATE depends on DXCC"), so every QSO is first classified by entity.
+ */
+object AwardCalculator {
+
+    fun calculate(qsosByGrid: Map<String, List<GridQso>>): List<AwardProgress> {
+        val all = qsosByGrid.values.flatten()
+        return listOf(
+            AwardProgress(
+                AwardType.VUCC,
+                workedKeys = qsosByGrid.keys,
+                count = qsosByGrid.size,
+                target = AwardTargets.VUCC
+            ),
+            calculateDxcc(all),
+            calculateWapc(all),
+            calculateWaja(all),
+            calculateWaz(all),
+            calculateWas(all)
+        )
+    }
+
+    private fun calculateDxcc(all: List<GridQso>): AwardProgress {
+        val keys = mutableSetOf<String>()
+        for (q in all) {
+            val code = q.dxcc ?: prefixEntityCode(q.call)
+            if (code != null) keys.add(code.toString())
+        }
+        return AwardProgress(AwardType.DXCC, keys, keys.size, AwardTargets.DXCC)
+    }
+
+    private fun calculateWapc(all: List<GridQso>): AwardProgress {
+        val keys = mutableSetOf<String>()
+        for (q in all) {
+            when (entityOf(q)) {
+                Entity.CHINA -> q.state?.trim()?.uppercase()?.takeIf { it in CN_STATES }?.let { keys.add(it) }
+                Entity.HONG_KONG -> keys.add(HK_CODE)
+                Entity.MACAO -> keys.add(MO_CODE)
+                Entity.TAIWAN -> keys.add(TW_CODE)
+                else -> {}
+            }
+        }
+        return AwardProgress(AwardType.WAPC, keys, keys.size, AwardTargets.WAPC)
+    }
+
+    private fun calculateWaja(all: List<GridQso>): AwardProgress {
+        val keys = mutableSetOf<String>()
+        for (q in all) {
+            if (entityOf(q) != Entity.JAPAN) continue
+            q.state?.trim()?.takeIf { it.length == 2 && it.all(Char::isDigit) }?.let { keys.add(it) }
+        }
+        return AwardProgress(AwardType.WAJA, keys, keys.size, AwardTargets.WAJA)
+    }
+
+    private fun calculateWaz(all: List<GridQso>): AwardProgress {
+        val keys = mutableSetOf<String>()
+        for (q in all) {
+            q.cqz?.takeIf { it in 1..40 }?.let { keys.add(it.toString()) }
+        }
+        return AwardProgress(AwardType.WAZ, keys, keys.size, AwardTargets.WAZ)
+    }
+
+    private fun calculateWas(all: List<GridQso>): AwardProgress {
+        val keys = mutableSetOf<String>()
+        for (q in all) {
+            if (entityOf(q) != Entity.USA) continue
+            q.state?.trim()?.uppercase()?.takeIf { it in US_STATES }?.let { keys.add(it) }
+        }
+        return AwardProgress(AwardType.WAS, keys, keys.size, AwardTargets.WAS)
+    }
+
+    private enum class Entity { CHINA, HONG_KONG, MACAO, TAIWAN, JAPAN, USA, OTHER }
+
+    private fun entityOf(q: GridQso): Entity = when (q.dxcc) {
+        318 -> Entity.CHINA
+        321 -> Entity.HONG_KONG
+        152 -> Entity.MACAO
+        386 -> Entity.TAIWAN
+        339 -> Entity.JAPAN
+        291 -> Entity.USA
+        else -> prefixEntity(q.call)
+    }
+
+    /** Coarse entity from callsign prefix, used when LoTW omitted the DXCC field. */
+    private fun prefixEntity(call: String): Entity {
+        val c = call.uppercase().substringBefore('/')
+        return when {
+            CN_PREFIXES.any { c.startsWith(it) } -> Entity.CHINA
+            c.startsWith("VR") -> Entity.HONG_KONG
+            c.startsWith("XX9") -> Entity.MACAO
+            TW_PREFIXES.any { c.startsWith(it) } -> Entity.TAIWAN
+            JP_PREFIXES.any { c.startsWith(it) } -> Entity.JAPAN
+            US_PREFIXES.any { c.startsWith(it) } -> Entity.USA
+            else -> Entity.OTHER
+        }
+    }
+
+    /** ARRL DXCC entity code guessed from callsign prefix (very coarse). */
+    private fun prefixEntityCode(call: String): Int? {
+        return when (prefixEntity(call)) {
+            Entity.CHINA -> 318
+            Entity.HONG_KONG -> 321
+            Entity.MACAO -> 152
+            Entity.TAIWAN -> 386
+            Entity.JAPAN -> 339
+            Entity.USA -> 291
+            else -> null
+        }
+    }
+
+    private val CN_PREFIXES = listOf("BA", "BD", "BG", "BH", "BI", "BY", "BJ", "BK", "BL", "BQ", "BR", "BS")
+    private val TW_PREFIXES = listOf("BM", "BV", "BU", "BW", "BX", "BN", "BO", "BT", "BZ")
+    private val JP_PREFIXES =
+        listOf("7J", "7K", "7L", "7M", "7N") + ('A'..'Z').map { "J$it" }
+    private val US_PREFIXES =
+        listOf("AA", "AB", "AC", "AD", "AE", "AF", "AG", "AH", "AI", "AJ", "AK", "AL", "K", "N", "W")
+
+    private val CN_STATES = setOf(
+        "AH", "BJ", "CQ", "FJ", "GD", "GS", "GX", "GZ", "HA", "HB", "HE", "HI", "HL", "HN", "JL",
+        "JS", "JX", "LN", "NM", "NX", "QH", "SC", "SD", "SH", "SN", "SX", "TJ", "XJ", "XZ", "YN", "ZJ"
+    )
+
+    private val US_STATES = setOf(
+        "AL", "AK", "AZ", "AR", "CA", "CO", "CT", "DE", "FL", "GA", "HI", "ID", "IL", "IN", "IA",
+        "KS", "KY", "LA", "ME", "MD", "MA", "MI", "MN", "MS", "MO", "MT", "NE", "NV", "NH", "NJ",
+        "NM", "NY", "NC", "ND", "OH", "OK", "OR", "PA", "RI", "SC", "SD", "TN", "TX", "UT", "VT",
+        "VA", "WA", "WV", "WI", "WY"
+    )
+
+    private const val HK_CODE = "HK"
+    private const val MO_CODE = "MO"
+    private const val TW_CODE = "TW"
+}

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

@@ -0,0 +1,76 @@
+/*
+ * 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
+
+/**
+ * One confirmed satellite QSO as reported by LoTW, kept per worked gridsquare
+ * so the map can show, for any worked grid, which callsigns were worked there
+ * and when.
+ *
+ * @param call      opposite station callsign (as logged by the opposite op)
+ * @param epochMs   QSO date+time in UTC milliseconds
+ * @param satName   satellite name (e.g. "FO-29")
+ * @param mode      ADIF mode (FM / CW / SSB ...)
+ * @param bandUp    uplink band as reported by LoTW (BAND_RX: "70CM", "2M", "10M"...)
+ * @param bandDown  downlink band (BAND: "2M", "70CM"...) — may be empty when
+ *                  LoTW did not include it
+ * @param dxcc      ARRL DXCC entity code of the opposite station (from ADIF
+ *                  <DXCC>), or null when LoTW omitted it
+ * @param country   DXCC entity name (ADIF <COUNTRY>), or null
+ * @param cqz       CQ zone of the opposite station (ADIF <CQZ>), or null
+ * @param state     Primary administrative subdivision of the opposite station
+ *                  (ADIF <STATE>). Interpretation depends on the DXCC entity:
+ *                  China -> province code ("GD"), Japan -> prefecture number
+ *                  ("34"), USA -> state abbreviation ("CA"). Null when absent.
+ */
+data class GridQso(
+    val call: String,
+    val epochMs: Long,
+    val satName: String,
+    val mode: String,
+    val bandUp: String,
+    val bandDown: String,
+    val dxcc: Int? = null,
+    val country: String? = null,
+    val cqz: Int? = null,
+    val state: String? = null
+) {
+    /** Short uplink/downlink band label ("U/V", "V/A"), or "" when unknown. */
+    val bandLabel: String
+        get() {
+            val up = bandAbbrev(bandUp)
+            val down = bandAbbrev(bandDown)
+            return when {
+                up.isNotEmpty() && down.isNotEmpty() -> "$up/$down"
+                up.isNotEmpty() -> up
+                else -> ""
+            }
+        }
+
+    private fun bandAbbrev(band: String): String = when (band.trim().uppercase()) {
+        "70CM" -> "U"
+        "2M" -> "V"
+        "10M" -> "A"
+        "6M" -> "V"
+        "1.2G" -> "L"
+        "2.4G" -> "S"
+        "23CM" -> "L"
+        "13CM" -> "S"
+        else -> band.trim().uppercase()
+    }
+}

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

@@ -59,6 +59,7 @@ data class OtherSettings(
     val stateOfUtc: Boolean,
     val stateOfLightTheme: Boolean,
     val stateOfNightMode: Boolean = false,
+    val stateOfMapGrid: Boolean = false,
     val shouldSeeWarning: Boolean,
     val shouldSeeWhatsNew: Boolean,
     val sstvMode: String = "Auto",
@@ -76,6 +77,20 @@ data class DataSourcesSettings(
     fun isTransceiverEnabled(index: Int): Boolean = transceiversEnabled.getOrElse(index) { true }
 }
 
+data class WavelogSettings(
+    val url: String = "",
+    val token: String = ""
+) {
+    val isConfigured: Boolean get() = url.isNotBlank() && token.isNotBlank()
+}
+
+data class LoTWSettings(
+    val callsign: String = "",
+    val password: String = ""
+) {
+    val isConfigured: Boolean get() = callsign.isNotBlank() && password.isNotBlank()
+}
+
 data class RadioControlSettings(
     val enabled: Boolean,
     val radioModel: String,

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

@@ -0,0 +1,38 @@
+/*
+ * 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.repository
+
+/** Fetches confirmed gridsquares directly from ARRL LoTW. */
+interface ILoTWRepository {
+
+    /**
+     * Fetch all confirmed (QSL_RCVD=Y) gridsquares for the given LoTW account.
+     * Returns the 4-char grid set with an explicit failure cause on error.
+     */
+    suspend fun fetchConfirmedGrids(callsign: String, password: String): LoTWResult
+
+    /**
+     * Same report, but keeps the per-QSO detail of every confirmed satellite
+     * QSO (call / time / satellite / mode / bands), grouped by worked 4-char
+     * gridsquare. Failure cause is kept explicit.
+     */
+    suspend fun fetchConfirmedGridQsos(
+        callsign: String,
+        password: String
+    ): LoTWResult
+}

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

@@ -32,6 +32,8 @@ interface IMainContainer {
     val databaseRepo: IDatabaseRepo
     val amSatRepo: IAmSatRepository
     val updateRepo: IUpdateRepository
+    val wavelogRepo: IWavelogRepository
+    val lotwRepo: com.rtbishop.look4sat.core.domain.repository.ILoTWRepository
     val radioTrackingService: IRadioTrackingService
     val mutualPassData: StateFlow<MutualPassData>
     fun setMutualPassData(data: MutualPassData)

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

@@ -23,6 +23,7 @@ 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.WavelogSettings
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import kotlinx.coroutines.flow.StateFlow
 
@@ -92,4 +93,22 @@ interface ISettingsRepo {
     fun getAmSatCallsign(): String
     fun setAmSatCallsign(callsign: String)
     //endregion
+
+    //region # Wavelog worked-grids settings
+    val wavelogSettings: StateFlow<WavelogSettings>
+    fun updateWavelogSettings(settings: WavelogSettings)
+    fun getWorkedGrids(): Set<String>
+    fun setWorkedGrids(grids: Set<String>)
+    /** Confirmed satellite QSOs grouped by worked 4-char gridsquare (map tap detail). */
+    fun getWorkedGridQsos(): Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>
+    fun setWorkedGridQsos(qsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>)
+    /** Distinct 4-char gridsquares the account operated from (LoTW <MY_GRIDSQUARE>). */
+    fun getRoamedGrids(): Set<String>
+    fun setRoamedGrids(grids: Set<String>)
+    //endregion
+
+    //region # LoTW confirmed-grids settings
+    val lotwSettings: StateFlow<com.rtbishop.look4sat.core.domain.model.LoTWSettings>
+    fun updateLoTWSettings(settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings)
+    //endregion
 }

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

@@ -0,0 +1,28 @@
+/*
+ * 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.repository
+
+/** Fetches worked gridsquares from a self-hosted Wavelog instance (API v2). */
+interface IWavelogRepository {
+
+    /**
+     * Fetch worked grids for the configured Wavelog URL/token.
+     * Returns the grid set, or null on any failure.
+     */
+    suspend fun fetchWorkedGrids(url: String, token: String): Set<String>?
+}

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

@@ -0,0 +1,48 @@
+/*
+ * 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.repository
+
+/** Result of a LoTW report fetch, with the failure cause kept explicit. */
+sealed class LoTWResult {
+
+    /** Report downloaded and parsed successfully. */
+    data class Success(
+        val grids: Set<String>,
+        val qsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>,
+        /** Distinct 4-char gridsquares the account itself operated from
+         *  (ADIF <MY_GRIDSQUARE>, satellite QSOs only) — "roamed/activated" grids. */
+        val roamedGrids: Set<String> = emptySet()
+    ) : LoTWResult()
+
+    /** HTTP 200 but LoTW replied with its login-error page (bad callsign/password). */
+    data object BadCredentials : LoTWResult()
+
+    /**
+     * Report endpoint refused the request without a usable error page. LoTW
+     * limits downloads to one in progress per user id and flags accounts that
+     * pull the full report too often; the server answers those with a bare
+     * non-ADIF body (no <eoh>).
+     */
+    data object RateLimited : LoTWResult()
+
+    /** Connect/read timed out — typically a slow route to the ARRL servers. */
+    data object Timeout : LoTWResult()
+
+    /** Any other network-level failure (DNS, TLS, connection reset, HTTP 5xx). */
+    data class NetworkError(val detail: String) : LoTWResult()
+}

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

@@ -19,6 +19,8 @@ package com.rtbishop.look4sat.core.domain.source
 
 object Sources {
     val satelliteDataUrls = mapOf(
+        "LAPAN-A2" to "https://www.kaggle.com/api/v1/datasets/download/muazamnugroho/lapan-a2-satellite-two-line-element-tle-dataset/LAPAN-A2_TLE_latest.txt",
+        "R4UAB" to "https://r4uab.ru/satonline.txt",
         "All" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=active&FORMAT=csv",
         "SatNOGS" to "https://db.satnogs.org/api/tle/?format=3le",
         "Amateur" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=amateur&FORMAT=csv",
@@ -46,7 +48,6 @@ object Sources {
         "Amsat" to "https://amsat.org/tle/current/nasabare.txt",
         "Classified" to "https://www.mmccants.org/tles/classfd.zip",
         "McCants" to "https://www.mmccants.org/tles/inttles.zip",
-        "R4UAB" to "https://r4uab.ru/satonline.txt",
         "ARISS" to "https://live.ariss.org/iss.txt",
         "Other" to "" // key for sats filter
     )

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

@@ -2,11 +2,12 @@ package com.rtbishop.look4sat.core.domain.utility
 
 /**
  * Compares two version strings of the form "<major>.<minor>.<patch>[-<build>]" used by the
- * BA7OPF fork releases (e.g. "4.4.6-ba7opf.6" or "v4.4.6-ba7opf.7").
+ * BA7OPF fork releases (e.g. "4.4.6-ba7opf.6" or "v4.4.6-ba7opf.9.1").
  *
  * The comparison is done on the numeric version segments first; when the base versions are
- * equal, the trailing build number (if any) decides. This lets a "4.4.6-ba7opf.7" release be
- * detected as newer than "4.4.6-ba7opf.6" while "4.5.0" trumps any "4.4.x" build.
+ * equal, the trailing build numbers of the suffix decide. All numeric segments of the suffix
+ * are compared as a sequence, so multi-level suffixes work correctly:
+ * "4.4.6-ba7opf.9.1" > "4.4.6-ba7opf.9" > "4.4.6-ba7opf.8".
  */
 object VersionComparator {
 
@@ -20,25 +21,28 @@ object VersionComparator {
             val k = curr.first.getOrElse(i) { 0 }
             if (c != k) return c > k
         }
-        return cand.second > curr.second
+        val maxBuild = maxOf(cand.second.size, curr.second.size)
+        for (i in 0 until maxBuild) {
+            val c = cand.second.getOrElse(i) { 0 }
+            val k = curr.second.getOrElse(i) { 0 }
+            if (c != k) return c > k
+        }
+        return false
     }
 
     /**
-     * Parses a version string into (numeric base segments, trailing build number).
-     * "v4.4.6-ba7opf.7" -> ([4,4,6], 7); "4.4.6" -> ([4,4,6], 0); "4.4.6-ba7opf" -> ([4,4,6], 0).
+     * Parses a version string into (numeric base segments, numeric suffix segments).
+     * "v4.4.6-ba7opf.9.1" -> ([4,4,6], [9,1]); "4.4.6-ba7opf.8" -> ([4,4,6], [8]);
+     * "4.4.6" -> ([4,4,6], []); "4.4.6-ba7opf" -> ([4,4,6], []).
      */
-    fun parse(version: String): Pair<List<Int>, Int> {
+    fun parse(version: String): Pair<List<Int>, List<Int>> {
         val cleaned = version.trim().removePrefix("v")
         val dashIndex = cleaned.indexOf('-')
         val basePart = if (dashIndex >= 0) cleaned.substring(0, dashIndex) else cleaned
         val suffixPart = if (dashIndex >= 0) cleaned.substring(dashIndex + 1) else ""
         val base = basePart.split('.').mapNotNull { it.toIntOrNull() }
-        // The build number is the trailing numeric segment of the suffix (e.g. "ba7opf.7" -> 7).
-        val build = suffixPart
-            .split('.')
-            .lastOrNull()
-            ?.toIntOrNull()
-            ?: 0
+        // All numeric segments of the suffix, in order (e.g. "ba7opf.9.1" -> [9, 1]).
+        val build = suffixPart.split('.').mapNotNull { it.toIntOrNull() }
         return base to build
     }
 }

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

@@ -40,9 +40,19 @@ class VersionComparatorTest {
     }
 
     @Test
-    fun `parse extracts base and build number`() {
-        assertEquals(listOf(4, 4, 6) to 7, VersionComparator.parse("v4.4.6-ba7opf.7"))
-        assertEquals(listOf(4, 4, 6) to 0, VersionComparator.parse("4.4.6"))
-        assertEquals(listOf(4, 4, 6) to 0, VersionComparator.parse("4.4.6-ba7opf"))
+    fun `multi level suffixes compare correctly`() {
+        // The .9.1 hotfix case that exposed the old single-build-number logic.
+        assertTrue(VersionComparator.isNewer("4.4.6-ba7opf.9.1", "4.4.6-ba7opf.9"))
+        assertTrue(VersionComparator.isNewer("v4.4.6-ba7opf.9.1", "4.4.6-ba7opf.8"))
+        assertFalse(VersionComparator.isNewer("4.4.6-ba7opf.9", "4.4.6-ba7opf.9.1"))
+        assertTrue(VersionComparator.isNewer("4.4.6-ba7opf.10", "4.4.6-ba7opf.9.1"))
+    }
+
+    @Test
+    fun `parse extracts base and suffix segments`() {
+        assertEquals(listOf(4, 4, 6) to listOf(7), VersionComparator.parse("v4.4.6-ba7opf.7"))
+        assertEquals(listOf(4, 4, 6) to listOf(9, 1), VersionComparator.parse("v4.4.6-ba7opf.9.1"))
+        assertEquals(listOf(4, 4, 6) to emptyList<Int>(), VersionComparator.parse("4.4.6"))
+        assertEquals(listOf(4, 4, 6) to emptyList<Int>(), VersionComparator.parse("4.4.6-ba7opf"))
     }
 }

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/model/AwardCalculatorTest.kt

@@ -0,0 +1,155 @@
+/*
+ * 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
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class AwardCalculatorTest {
+
+    private fun qso(
+        call: String,
+        dxcc: Int? = null,
+        cqz: Int? = null,
+        state: String? = null,
+        grid: String = "OL62"
+    ) = GridQso(
+        call = call, epochMs = 0L, satName = "SO-50", mode = "FM",
+        bandUp = "70CM", bandDown = "2M", dxcc = dxcc, cqz = cqz, state = state
+    )
+
+    private fun byGrid(vararg qsos: GridQso) =
+        qsos.groupBy { "OL62" } // all share one grid for award-math tests
+
+    @Test
+    fun `vucc counts distinct grid keys`() {
+        val qsos = mapOf(
+            "OL62" to listOf(qso("BG7XYZ")),
+            "PM95" to listOf(qso("JH0ABC")),
+            "OL62" to listOf(qso("BA7AAA"))
+        )
+        // map literal dedupes keys: OL62/PM95 -> 2 grids
+        val progress = AwardCalculator.calculate(qsos).first { it.type == AwardType.VUCC }
+        assertEquals(2, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("OL62", "PM95")))
+    }
+
+    @Test
+    fun `dxcc counts distinct entities from dxcc field`() {
+        val all = listOf(
+            qso("BG7XYZ", dxcc = 318),
+            qso("JH0ABC", dxcc = 339),
+            qso("YD1XYZ", dxcc = 327),
+            qso("BG7ABC", dxcc = 318)
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.DXCC }
+        assertEquals(3, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("318", "339", "327")))
+    }
+
+    @Test
+    fun `dxcc falls back to prefix when dxcc missing`() {
+        val all = listOf(qso("JH0ABC"), qso("BG7XYZ"), qso("VR2XYZ"), qso("XX9A"))
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.DXCC }
+        assertEquals(4, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("339", "318", "321", "152")))
+    }
+
+    @Test
+    fun `wapc counts mainland provinces plus hk mo tw`() {
+        val all = listOf(
+            qso("BG7XYZ", dxcc = 318, state = "GD"),   // Guangdong
+            qso("BD5ABC", dxcc = 318, state = "ZJ"),   // Zhejiang
+            qso("BD5ABC", dxcc = 318, state = "ZJ"),   // dup
+            qso("VR2X", dxcc = 321),                   // Hong Kong
+            qso("XX9A", dxcc = 152),                   // Macao
+            qso("BM4X", dxcc = 386)                    // Taiwan
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.WAPC }
+        assertEquals(5, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("GD", "ZJ", "HK", "MO", "TW")))
+    }
+
+    @Test
+    fun `wapc ignores non-china states and missing states`() {
+        val all = listOf(
+            qso("JH0ABC", dxcc = 339, state = "34"),   // Japan state ignored
+            qso("BG7XYZ", dxcc = 318, state = null),   // missing province
+            qso("K1ABC", dxcc = 291, state = "HI")     // Hawaii != Hainan
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.WAPC }
+        assertEquals(0, progress.count)
+        assertTrue(progress.workedKeys.isEmpty())
+    }
+
+    @Test
+    fun `waja counts japanese prefectures only`() {
+        val all = listOf(
+            qso("JH0ABC", dxcc = 339, state = "10"),   // Tokyo
+            qso("JH0ABC", dxcc = 339, state = "47"),   // Okinawa
+            qso("JH0ABC", dxcc = 339, state = "10"),   // dup
+            qso("BG7XYZ", dxcc = 318, state = "10"),   // Chinese call, state=10 must NOT count
+            qso("JE2XYZ", dxcc = 339, state = null)    // missing
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.WAJA }
+        assertEquals(2, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("10", "47")))
+    }
+
+    @Test
+    fun `waz counts distinct cq zones in range`() {
+        val all = listOf(
+            qso("BG7XYZ", cqz = 24),
+            qso("JH0ABC", cqz = 25),
+            qso("YD1XYZ", cqz = 28),
+            qso("BG7AAA", cqz = 24),
+            qso("BG7BBB", cqz = null),
+            qso("BG7CCC", cqz = 0)
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.WAZ }
+        assertEquals(3, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("24", "25", "28")))
+    }
+
+    @Test
+    fun `was counts us states only`() {
+        val all = listOf(
+            qso("K1ABC", dxcc = 291, state = "CA"),
+            qso("W2XYZ", dxcc = 291, state = "NY"),
+            qso("N3QRS", dxcc = 291, state = "ca"),    // lowercase normalized
+            qso("BG7XYZ", dxcc = 318, state = "CA"),   // not US
+            qso("K1AAA", dxcc = 291, state = "XX")     // invalid state
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.WAS }
+        assertEquals(2, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("CA", "NY")))
+    }
+
+    @Test
+    fun `all six awards present with correct targets`() {
+        val progress = AwardCalculator.calculate(emptyMap())
+        assertEquals(6, progress.size)
+        assertEquals(100, progress.first { it.type == AwardType.DXCC }.target)
+        assertEquals(100, progress.first { it.type == AwardType.VUCC }.target)
+        assertEquals(34, progress.first { it.type == AwardType.WAPC }.target)
+        assertEquals(47, progress.first { it.type == AwardType.WAJA }.target)
+        assertEquals(40, progress.first { it.type == AwardType.WAZ }.target)
+        assertEquals(50, progress.first { it.type == AwardType.WAS }.target)
+    }
+}

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

@@ -210,12 +210,20 @@ fun RowScope.NextPassRow(pass: OrbitalPass, modifier: Modifier = Modifier, isUtc
 }
 
 @Composable
-fun CardButton(onClick: () -> Unit, text: String, modifier: Modifier = Modifier) {
+fun CardButton(
+    onClick: () -> Unit,
+    text: String,
+    modifier: Modifier = Modifier,
+    isEnabled: Boolean = true
+) {
     ElevatedButton(
         onClick = onClick,
+        enabled = isEnabled,
         colors = ButtonDefaults.buttonColors(
             containerColor = MaterialTheme.colorScheme.surfaceVariant,
-            contentColor = MaterialTheme.colorScheme.onSurfaceVariant
+            contentColor = MaterialTheme.colorScheme.onSurfaceVariant,
+            disabledContainerColor = MaterialTheme.colorScheme.surfaceVariant,
+            disabledContentColor = MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.4f)
         ),
         shape = MaterialTheme.shapes.small,
         modifier = modifier,
@@ -316,9 +324,21 @@ fun InfoDialog(
 
 @Composable
 fun SharedDialog(
-    title: String, onCancel: () -> Unit, onAccept: () -> Unit, content: @Composable () -> Unit
+    title: String,
+    onCancel: () -> Unit,
+    onAccept: () -> Unit,
+    acceptText: String? = null,
+    acceptEnabled: Boolean = true,
+    content: @Composable () -> Unit
 ) {
-    SharedDialog(title = title, onDismissRequest = onCancel, onCancel = onCancel, onAccept = onAccept) { _ ->
+    SharedDialog(
+        title = title,
+        onDismissRequest = onCancel,
+        onCancel = onCancel,
+        onAccept = onAccept,
+        acceptText = acceptText,
+        acceptEnabled = acceptEnabled
+    ) { _ ->
         content()
     }
 }
@@ -329,6 +349,8 @@ fun SharedDialog(
     onDismissRequest: () -> Unit,
     onCancel: (() -> Unit)? = null,
     onAccept: (() -> Unit)? = null,
+    acceptText: String? = null,
+    acceptEnabled: Boolean = true,
     titleFontSize: Int = 16,
     titleTextAlign: TextAlign = if (onCancel != null && onAccept != null) TextAlign.Center else TextAlign.Start,
     content: @Composable (padding: Dp) -> Unit
@@ -356,7 +378,11 @@ fun SharedDialog(
                     .padding(horizontal = if (onCancel != null && onAccept != null) padding else 0.dp)
             )
             if (onAccept != null) {
-                CardButton(onClick = onAccept, text = stringResource(R.string.btn_accept))
+                CardButton(
+                    onClick = onAccept,
+                    text = acceptText ?: stringResource(R.string.btn_accept),
+                    isEnabled = acceptEnabled
+                )
             }
         }
         content(padding)

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

@@ -0,0 +1,142 @@
+package com.rtbishop.look4sat.core.presentation
+
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.Path
+import androidx.compose.ui.graphics.drawscope.Stroke
+import androidx.compose.ui.graphics.drawscope.rotate
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import kotlin.math.atan2
+import kotlin.math.cos
+import kotlin.math.sin
+import kotlin.math.sqrt
+
+/**
+ * Format a Maidenhead locator for display. Per IARU convention and the user's
+ * preference: field letters (1-2) and square digits (3-4) uppercase, sub-square
+ * letters (5-6 of a 6/8-char locator) lowercase, e.g. "OL62" / "OL62kl".
+ */
+fun formatGridDisplay(grid: String): String? {
+    val g = grid.trim().uppercase()
+    if (g.length !in listOf(4, 6, 8) || g.any { !it.isLetterOrDigit() }) return null
+    if (g.length == 4) return g
+    if (g.length == 6) return g.take(4) + g.drop(4).lowercase()
+    return g.take(4) + g.drop(4).take(2).lowercase() + g.drop(6)
+}
+
+/**
+ * Top-bar chip for the mutual-match screen: navigation needle (rotated by the
+ * great-circle bearing to the target grid, 0 deg = north), grid locator and
+ * distance. Shows a dimmed placeholder when no target grid is entered.
+ */
+@Composable
+fun GridTargetChip(
+    grid: String?,
+    distanceKm: Double?,
+    bearingDeg: Double?,
+    modifier: Modifier = Modifier
+) {
+    val configured = grid != null && distanceKm != null && bearingDeg != null
+    // The app's signature accent yellow (MaterialTheme primary in both themes).
+    val accent = MaterialTheme.colorScheme.primary
+    val placeholder = MaterialTheme.colorScheme.onSurfaceVariant
+    Row(
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.spacedBy(8.dp),
+        modifier = modifier
+            .height(36.dp)
+            .background(
+                color = MaterialTheme.colorScheme.surface.copy(alpha = if (configured) 0.9f else 0.45f),
+                shape = RoundedCornerShape(12.dp)
+            )
+            .padding(horizontal = 12.dp)
+    ) {
+        NavigationNeedle(
+            bearingDeg = bearingDeg ?: 0.0,
+            color = if (configured) accent else placeholder,
+            dimmed = !configured,
+            modifier = Modifier.size(22.dp)
+        )
+        Text(
+            text = grid?.let { formatGridDisplay(it) } ?: "----",
+            fontSize = 15.sp,
+            fontWeight = FontWeight.Bold,
+            fontFamily = FontFamily.Monospace,
+            color = if (configured) accent else placeholder,
+            letterSpacing = 1.sp
+        )
+        Text(
+            text = distanceKm?.let { "${"%,.0f".format(it)} km" } ?: "-- km",
+            fontSize = 14.sp,
+            color = MaterialTheme.colorScheme.onSurface,
+            modifier = Modifier.padding(horizontal = 8.dp, vertical = 2.dp)
+        )
+    }
+}
+
+/**
+ * Map-style navigation needle: slim triangular pointer whose tip points at
+ * [bearingDeg] (0 = north/up, clockwise positive).
+ */
+@Composable
+private fun NavigationNeedle(
+    bearingDeg: Double,
+    color: Color,
+    dimmed: Boolean,
+    modifier: Modifier = Modifier
+) {
+    Canvas(modifier = modifier) {
+        val cx = size.width / 2f
+        val cy = size.height / 2f
+        val r = size.minDimension / 2f
+        if (dimmed) {
+            drawCircle(color = color, radius = r * 0.92f, style = Stroke(width = 1.5f))
+        }
+        rotate(degrees = bearingDeg.toFloat(), pivot = Offset(cx, cy)) {
+            val path = Path().apply {
+                moveTo(cx, cy - r * 0.9f)          // tip (north before rotation)
+                lineTo(cx - r * 0.42f, cy + r * 0.55f)
+                lineTo(cx, cy + r * 0.28f)
+                lineTo(cx + r * 0.42f, cy + r * 0.55f)
+                close()
+            }
+            drawPath(path, color = color)
+        }
+    }
+}
+
+/** Great-circle distance in km between two positions. */
+fun greatCircleDistanceKm(lat1: Double, lon1: Double, lat2: Double, lon2: Double): Double {
+    val rad = Math.PI / 180.0
+    val dLat = (lat2 - lat1) * rad
+    val dLon = (lon2 - lon1) * rad
+    val a = sin(dLat / 2) * sin(dLat / 2) +
+        cos(lat1 * rad) * cos(lat2 * rad) * sin(dLon / 2) * sin(dLon / 2)
+    return 6371.0 * 2 * kotlin.math.atan2(kotlin.math.sqrt(a), kotlin.math.sqrt(1 - a))
+}
+
+/** Initial great-circle bearing in degrees (0 = north, clockwise). */
+fun greatCircleBearingDeg(lat1: Double, lon1: Double, lat2: Double, lon2: Double): Double {
+    val rad = Math.PI / 180.0
+    val dLon = (lon2 - lon1) * rad
+    val y = sin(dLon) * cos(lat2 * rad)
+    val x = cos(lat1 * rad) * sin(lat2 * rad) -
+        sin(lat1 * rad) * cos(lat2 * rad) * cos(dLon)
+    return (Math.atan2(y, x) / rad + 360.0) % 360.0
+}

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

@@ -150,6 +150,7 @@
     <string name="prefs_other_switch_sweep">Habilitar animaciones radar</string>
     <string name="prefs_other_switch_sensors">Usar sensores para rotar vista de radar</string>
     <string name="prefs_other_switch_night_mode">Activar filtro nocturno rojo</string>
+    <string name="prefs_other_switch_map_grid">Mostrar cuadrícula Maidenhead en el mapa</string>
 
     <string name="prefs_highlight_title">Resaltado de elevación</string>
     <string name="prefs_highlight_low">Baja &lt; %1$d°</string>

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

@@ -149,6 +149,7 @@
     <string name="prefs_other_switch_sweep">Показывать анимацию радара</string>
     <string name="prefs_other_switch_sensors">Использовать сенсоры устройства</string>
     <string name="prefs_other_switch_night_mode">Включить красный ночной фильтр</string>
+    <string name="prefs_other_switch_map_grid">Показывать сетку Maidenhead на карте</string>
 
     <string name="prefs_highlight_title">Подсветка высоты</string>
     <string name="prefs_highlight_low">Низко &lt; %1$d°</string>

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

@@ -150,6 +150,7 @@
     <string name="prefs_other_switch_sweep">radar sweep සජීවිකරණය සබල කරන්න</string>
     <string name="prefs_other_switch_sensors">Radar දර්ශනය කරකැවීමට සංවේදක භාවිතා කරන්න </string>
     <string name="prefs_other_switch_night_mode">රතු රාත්‍රී පෙරහන සබල කරන්න</string>
+    <string name="prefs_other_switch_map_grid">සිතියමේ Maidenhead ජාලකය පෙන්වන්න</string>
 
     <string name="prefs_highlight_title">උස් උද්දීපනය</string>
     <string name="prefs_highlight_low">අඩු &lt; %1$d°</string>

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

@@ -192,6 +192,7 @@
     <string name="prefs_other_switch_sweep">Radar taramasını etkinleştir</string>
     <string name="prefs_other_switch_sensors">Radar görünümünü döndürmek için sensörleri kullan</string>
     <string name="prefs_other_switch_night_mode">Kırmızı gece filtresini etkinleştir</string>
+    <string name="prefs_other_switch_map_grid">Haritada Maidenhead ızgarasını göster</string>
 
     <string name="prefs_highlight_title">Elevasyon vurgusu</string>
     <string name="prefs_highlight_low">Düşük &lt; %1$d°</string>

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

@@ -150,6 +150,7 @@
     <string name="prefs_other_switch_sweep">Показувати анімацію радара</string>
     <string name="prefs_other_switch_sensors">Використовувати сенсори пристрою</string>
     <string name="prefs_other_switch_night_mode">Увімкнути червоний нічний фільтр</string>
+    <string name="prefs_other_switch_map_grid">Показувати сітку Maidenhead на мапі</string>
 
     <string name="prefs_highlight_title">Підсвічування висоти</string>
     <string name="prefs_highlight_low">Низько &lt; %1$d°</string>

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

@@ -107,6 +107,8 @@
     <!-- Map screen -->
     <string name="map_prev">上一个</string>
     <string name="map_next">下一个</string>
+    <string name="map_grid_mode">网格模式</string>
+    <string name="map_satellite_mode">卫星模式</string>
     <string name="map_azimuth">方位角：%.1f°</string>
     <string name="map_elevation">仰角：%.1f°</string>
     <string name="map_altitude">高度：%.0f km</string>
@@ -118,6 +120,10 @@
     <string name="map_period">周期：% .0f min</string>
     <string name="map_velocity">速度：%.2f km/s</string>
     <string name="map_visibility">能见度：%s</string>
+    <!-- Worked-grid QSO dialog -->
+    <string name="grid_qso_calls_count">%d 个呼号 · %d 次通联</string>
+    <string name="grid_qso_first">首通</string>
+    <string name="grid_qso_no_sat">卫星未知</string>
     <string name="map_visible">日照中</string>
 
     <!-- Settings screen -->
@@ -139,6 +145,24 @@
     <string name="prefs_station_lat_text">输入站点的纬度</string>
     <string name="prefs_station_lon_text">输入站点的经度</string>
     <string name="prefs_locator_title">QTH 网格</string>
+    <string name="prefs_wavelog_title">Wavelog 已通联网格</string>
+    <string name="prefs_wavelog_configure">配置</string>
+    <string name="prefs_wavelog_configured">已从 Wavelog 同步 — 通联 %1$d 个网格</string>
+    <string name="prefs_wavelog_not_configured">未配置 — 连接你的 Wavelog 日志以在地图上高亮已通联网格</string>
+    <string name="prefs_wavelog_url">Wavelog 地址</string>
+    <string name="prefs_wavelog_token">API key ：日志 ID</string>
+    <string name="prefs_wavelog_hint">已同步网格数：%1$d。格式：API key:日志ID。填好直接点同步，会自动保存并拉取。</string>
+    <string name="prefs_wavelog_sync">立即同步</string>
+    <string name="prefs_wavelog_syncing">同步中…</string>
+    <string name="prefs_lotw_title">LoTW 已确认网格</string>
+    <string name="prefs_lotw_callsign">LoTW 呼号</string>
+    <string name="prefs_lotw_password">LoTW 密码</string>
+    <string name="prefs_lotw_hint">直接从 ARRL LoTW 拉取该呼号已确认 QSO 的网格并覆盖本地已存集合（当前 %1$d 个）。密码仅保存在手机本地。点"同步"会自动保存凭据并拉取。</string>
+    <string name="prefs_lotw_sync_duration_hint">同步通常约需 3–10 秒；首次同步或 ARRL 服务器繁忙时可能更久。</string>
+    <string name="prefs_lotw_sync">同步</string>
+    <string name="prefs_lotw_syncing">同步中…</string>
+    <string name="prefs_lotw_configured">已从 LoTW 同步 — 共 %1$d 个网格</string>
+    <string name="prefs_lotw_not_configured">未配置 — 直接登录 ARRL LoTW 拉取已确认 QSO 的网格，无需自建服务器</string>
     <string name="prefs_locator_text">使用梅登黑德网格设置站点位置</string>
 
     <string name="prefs_data_title">卫星数据更新</string>
@@ -202,6 +226,7 @@
     <string name="prefs_other_switch_sweep">启用雷达扫描动画</string>
     <string name="prefs_other_switch_sensors">使用传感器旋转雷达视图</string>
     <string name="prefs_other_switch_night_mode">启用红色夜间模式</string>
+    <string name="prefs_other_switch_map_grid">地图显示 Maidenhead 网格</string>
 
     <string name="prefs_highlight_title">仰角高亮</string>
     <string name="prefs_highlight_low">低 &lt; %1$d°</string>

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

@@ -131,6 +131,8 @@
     <string name="map_prev">Prev</string>
     <string name="map_next">Next</string>
     <string name="map_copyright" translatable="false">© OpenStreetMap contributors</string>
+    <string name="map_grid_mode">Grid mode</string>
+    <string name="map_satellite_mode">Satellite mode</string>
     <string name="map_azimuth">Azimuth: %.1f°</string>
     <string name="map_elevation">Elevation: %.1f°</string>
     <string name="map_altitude">Altitude: %.0f km</string>
@@ -143,6 +145,10 @@
     <string name="map_period">Period: %.0f min</string>
     <string name="map_velocity">Velocity: %.2f km/s</string>
     <string name="map_visibility">Visibility: %s</string>
+    <!-- Worked-grid QSO dialog -->
+    <string name="grid_qso_calls_count">%d callsigns · %d QSOs</string>
+    <string name="grid_qso_first">First</string>
+    <string name="grid_qso_no_sat">satellite unknown</string>
     <string name="map_visible">Visible</string>
 
     <!-- Settings screen -->
@@ -174,6 +180,24 @@
     <string name="prefs_station_lat_text">Set your ground station\'s latitude</string>
     <string name="prefs_station_lon_text">Set your ground station\'s longitude</string>
     <string name="prefs_locator_title">QTH locator settings</string>
+    <string name="prefs_wavelog_title">Wavelog worked grids</string>
+    <string name="prefs_wavelog_configure">Configure</string>
+    <string name="prefs_wavelog_configured">Synced from Wavelog — %1$d grids worked</string>
+    <string name="prefs_wavelog_not_configured">Not configured — connect your Wavelog logbook to highlight worked grids on the map</string>
+    <string name="prefs_wavelog_url">Wavelog URL</string>
+    <string name="prefs_wavelog_token">API key : logbook ID</string>
+    <string name="prefs_wavelog_hint">Worked grids synced: %1$d. Format: API key, colon, logbook ID. Just tap Sync — credentials are saved automatically.</string>
+    <string name="prefs_wavelog_sync">Sync now</string>
+    <string name="prefs_wavelog_syncing">Syncing…</string>
+    <string name="prefs_lotw_title">LoTW confirmed grids</string>
+    <string name="prefs_lotw_callsign">LoTW callsign</string>
+    <string name="prefs_lotw_password">LoTW password</string>
+    <string name="prefs_lotw_hint">Fetch confirmed-QSO grids directly from ARRL LoTW for this callsign and replace the stored set (currently %1$d). The password is stored on this device only. Tapping Sync saves the credentials and fetches in one step.</string>
+    <string name="prefs_lotw_sync_duration_hint">A sync usually takes about 3–10 seconds; the first one or a busy ARRL server can take longer.</string>
+    <string name="prefs_lotw_sync">Sync</string>
+    <string name="prefs_lotw_syncing">Syncing…</string>
+    <string name="prefs_lotw_configured">Synced from LoTW — %1$d grids total</string>
+    <string name="prefs_lotw_not_configured">Not configured — pull confirmed grids directly from ARRL LoTW, no self-hosted server needed</string>
     <string name="prefs_locator_text">Set station\'s position using locator</string>
 
     <string name="prefs_data_title">Satellite data</string>
@@ -236,6 +260,7 @@
     <string name="prefs_other_switch_sweep">Enable radar sweep animation</string>
     <string name="prefs_other_switch_sensors">Use sensors to rotate radar view</string>
     <string name="prefs_other_switch_night_mode">Enable red night mode filter</string>
+    <string name="prefs_other_switch_map_grid">Show Maidenhead grid on map</string>
 
     <string name="prefs_highlight_title">Elevation highlight</string>
     <string name="prefs_highlight_low">Low &lt; %1$d°</string>

feature/cw/build.gradle.kts

@@ -10,10 +10,11 @@ android {
     compileOptions {
         encoding = "UTF-8"
     }
-    // 照搬 Morse Expert 1.15: native 解码器仅 armeabi-v7a
+    // Morse Expert 1.15 官方 Play 分包提供 ARM32/ARM64 原生解码器
+    // (jniLibs/armeabi-v7a + arm64-v8a), 两个 ABI 都打进 APK
     defaultConfig {
         ndk {
-            abiFilters += listOf("armeabi-v7a")
+            abiFilters += listOf("armeabi-v7a", "arm64-v8a")
         }
     }
 }

feature/map/src/main/assets/awards/dxcc.json

@@ -0,0 +1 @@
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feature/map/src/main/assets/awards/waja.json

@@ -0,0 +1 @@
+{"type":"waja","regions":[{"id":0,"code":"22","name":"京都府","label_lon":135.5014,"label_lat":35.2429,"rings":[[[135.0367,35.5373],[134.9265,35.5125],[134.9143,35.5448],[134.8542,35.5881],[134.8725,35.6197],[134.8671,35.6581],[134.9353,35.6505],[134.9849,35.6923],[135.0222,35.6895],[135.0607,35.7081],[135.0857,35.7398],[135.223,35.7792],[135.308,35.6944],[135.3029,35.6628],[135.2874,35.6756],[135.268,35.6674],[135.2443,35.6205],[135.1926,35.5711],[135.1931,35.5383],[135.2547,35.5989],[135.2507,35.5702],[135.2739,35.5609],[135.2449,35.5613],[135.2442,35.5359],[135.2882,35.5155],[135.3303,35.517],[135.3163,35.4512],[135.3467,35.4753],[135.3468,35.494],[135.3975,35.4788],[135.3963,35.5152],[135.3445,35.5041],[135.3423,35.5518],[135.4263,35.5665],[135.4337,35.5907],[135.4619,35.6035],[135.4521,35.5675],[135.4865,35.558],[135.4599,35.5472],[135.449,35.5235],[135.4748,35.5049],[135.4591,35.4675],[135.4958,35.4251],[135.5253,35.4207],[135.5285,35.3797],[135.6419,35.3668],[135.7007,35.3437],[135.7684,35.3561],[135.7637,35.3445],[135.809,35.3161],[135.8313,35.2761],[135.8581,35.2891],[135.8291,35.2207],[135.8558,35.1595],[135.8355,35.059],[135.815,35.0461],[135.8334,35.0223],[135.8199,35.0129],[135.8351,35.0032],[135.8268,34.9911],[135.8493,34.991],[135.8782,34.9475],[135.8664,34.8923],[135.898,34.8712],[135.9405,34.8932],[135.9457,34.8517],[136.005,34.8427],[136.0047,34.8282],[136.0281,34.8192],[136.0104,34.8007],[136.0335,34.7789],[136.0285,34.7572],[136.0552,34.7384],[136.0285,34.7062],[135.9859,34.7151],[135.9754,34.7409],[135.9254,34.7403],[135.9254,34.7575],[135.89,34.7087],[135.7551,34.7275],[135.7284,34.7779],[135.7447,34.8043],[135.6955,34.8482],[135.6749,34.8987],[135.6307,34.9353],[135.5999,34.928],[135.6129,34.9713],[135.5733,34.9717],[135.5783,34.9557],[135.5568,34.9381],[135.58,34.937],[135.5807,34.9236],[135.5418,34.9153],[135.5132,34.9439],[135.481,34.9495],[135.4874,34.9919],[135.3821,35.0101],[135.3688,35.0536],[135.4031,35.0894],[135.3885,35.0971],[135.3894,35.1288],[135.3435,35.1357],[135.3405,35.1499],[135.2822,35.1449],[135.2898,35.1699],[135.2738,35.1771],[135.2067,35.1609],[135.1869,35.1718],[135.1967,35.2029],[135.1556,35.2262],[135.1583,35.2599],[135.109,35.2663],[135.0675,35.2372],[135.0565,35.264],[135.01,35.2698],[134.9988,35.2911],[134.9256,35.3112],[134.9185,35.3645],[134.9338,35.4074],[134.9586,35.4091],[134.9895,35.3863],[135.0483,35.4074]],[[135.4273,35.6825],[135.4214,35.6797],[135.4243,35.6882]],[[135.4809,35.5943],[135.4749,35.5956],[135.4779,35.6059]],[[135.3472,35.4959],[135.3404,35.4986],[135.3474,35.4971]]],"name_en":"Kyoto"},{"id":1,"code":"41","name":"佐賀県","label_lon":130.0903,"label_lat":33.2574,"rings":[[[129.8671,33.5967],[129.8479,33.5998],[129.8612,33.6183]],[[129.9007,33.594],[129.8967,33.6037],[129.9018,33.6029]],[[129.8447,33.5858],[129.8351,33.5891],[129.8459,33.5915]],[[129.757,33.5634],[129.7394,33.5728],[129.7412,33.5781],[129.7679,33.582]],[[129.8741,33.5438],[129.8729,33.5581],[129.8804,33.5675],[129.892,33.5561]],[[130.0387,33.4697],[130.2766,33.4783],[130.3555,33.4335],[130.3953,33.4273],[130.4144,33.4103],[130.4102,33.395],[130.4962,33.4448],[130.5362,33.4382],[130.5352,33.3428],[130.479,33.3307],[130.4863,33.3123],[130.4554,33.3017],[130.4668,33.2886],[130.4489,33.265],[130.431,33.2925],[130.4146,33.2532],[130.3907,33.2599],[130.3843,33.2403],[130.3713,33.243],[130.3766,33.2204],[130.3386,33.2033],[130.3549,33.1404],[130.2878,33.1469],[130.2454,33.2029],[130.2465,33.1923],[130.2149,33.1993],[130.2306,33.1887],[130.2217,33.1653],[130.149,33.1127],[130.1219,33.1247],[130.1277,33.1085],[130.1123,33.1011],[130.1398,33.0943],[130.2198,32.9595],[130.0857,32.9748],[130.0087,33.019],[129.9935,33.0477],[129.9215,33.0904],[129.9256,33.1075],[129.9545,33.1166],[129.9425,33.1643],[129.8877,33.1563],[129.818,33.1835],[129.8134,33.2421],[129.7588,33.2903],[129.7899,33.3403],[129.836,33.2867],[129.8528,33.2921],[129.8274,33.3124],[129.8339,33.3113],[129.8484,33.3287],[129.8273,33.3373],[129.8474,33.3369],[129.868,33.4075],[129.8227,33.4118],[129.8307,33.4218],[129.7828,33.4541],[129.8062,33.4573],[129.7936,33.4713],[129.8055,33.485],[129.8382,33.4621],[129.8352,33.4436],[129.8579,33.4538],[129.8497,33.4751],[129.8399,33.4698],[129.8314,33.4762],[129.8443,33.4786],[129.8273,33.5176],[129.8563,33.5055],[129.8396,33.5222],[129.8562,33.5191],[129.8451,33.5553],[129.8749,33.5371],[129.8744,33.5161],[129.8958,33.5494],[129.9278,33.5507],[129.9288,33.537],[129.956,33.5295],[129.967,33.5086],[129.9362,33.4786],[129.9546,33.4693],[129.9624,33.4835],[129.9671,33.4552],[130.0194,33.4463],[130.0402,33.4558]],[[129.9674,33.5271],[129.9645,33.5389],[129.9721,33.5432],[129.9772,33.5349]],[[129.9928,33.4777],[129.9846,33.4779],[129.9888,33.4806]],[[129.8563,33.4021],[129.8558,33.4049],[129.858,33.4024]],[[129.8601,33.3995],[129.8614,33.4017],[129.8656,33.4027]],[[129.8386,33.3191],[129.8351,33.3215],[129.8352,33.3227]],[[130.2242,32.9565],[130.2127,32.9546],[130.222,32.9584]]Line truncated

feature/map/src/main/assets/awards/wapc.json

@@ -0,0 +1 @@
+{"type":"wapc","regions":[{"id":0,"code":"BJ","name":"北京市","label_lon":116.42,"label_lat":40.1899,"rings":[[[117.3486,40.5811],[117.3899,40.5616],[117.4299,40.5761],[117.4127,40.6052],[117.4675,40.6497],[117.4675,40.6497],[117.5014,40.6366],[117.5149,40.6602],[117.494,40.6752],[117.409,40.687],[117.3425,40.6738],[117.3197,40.6579],[117.2784,40.6643],[117.2082,40.6947],[117.117,40.7001],[117.1121,40.7074],[117.0123,40.6938],[116.9649,40.7096],[116.9267,40.745],[116.9242,40.7736],[116.8485,40.8393],[116.8134,40.8483],[116.7598,40.89],[116.7136,40.9099],[116.7222,40.9275],[116.6779,40.9709],[116.6988,41.0215],[116.6883,41.0445],[116.6477,41.0594],[116.6156,41.0531],[116.623,41.021],[116.5984,40.9745],[116.5676,40.9926],[116.5196,40.9813],[116.5196,40.9813],[116.4555,40.9808],[116.4475,40.9537],[116.4771,40.8999],[116.3982,40.9062],[116.3705,40.9438],[116.3397,40.9293],[116.3342,40.9044],[116.4383,40.8193],[116.466,40.7745],[116.4537,40.7659],[116.3169,40.7722],[116.3114,40.755],[116.2732,40.7627],[116.2473,40.7917],[116.2202,40.7441],[116.2048,40.74],[116.1716,40.6956],[116.1629,40.6625],[116.134,40.6665],[116.0989,40.6307],[116.0052,40.5839],[115.9825,40.5789],[115.972,40.6025],[115.9079,40.6175],[115.8851,40.5952],[115.8279,40.5875],[115.8198,40.5593],[115.7847,40.5584],[115.7552,40.5402],[115.7361,40.5034],[115.781,40.4934],[115.7718,40.4437],[115.8642,40.3594],[115.9178,40.3544],[115.9517,40.2819],[115.9689,40.264],[115.8987,40.2344],[115.8704,40.1859],[115.8556,40.1887],[115.8476,40.147],[115.8063,40.1534],[115.7737,40.1763],[115.7546,40.1457],[115.7546,40.1457],[115.6,40.1196],[115.5907,40.0962],[115.5273,40.0761],[115.4854,40.0404],[115.4546,40.0298],[115.4503,39.9927],[115.4287,39.9844],[115.4263,39.9505],[115.4811,39.9358],[115.523,39.8991],[115.5156,39.8922],[115.5156,39.8922],[115.526,39.8757],[115.5143,39.8375],[115.5673,39.8164],[115.5525,39.7948],[115.5057,39.7842],[115.4835,39.7985],[115.4835,39.7985],[115.4435,39.7856],[115.4398,39.752],[115.4866,39.7419],[115.4916,39.6701],[115.4786,39.6507],[115.4786,39.6507],[115.5224,39.6401],[115.518,39.5973],[115.5458,39.6189],[115.587,39.5899],[115.6338,39.5996],[115.6338,39.5996],[115.6677,39.6152],[115.6985,39.5779],[115.6985,39.5779],[115.6991,39.57],[115.6991,39.57],[115.717,39.5603],[115.717,39.5603],[115.7188,39.5539],[115.7188,39.5539],[115.7207,39.5511],[115.7207,39.5511],[115.7225,39.5442],[115.7213,39.5437],[115.7225,39.5442],[115.7225,39.5437],[115.7213,39.5437],[115.7225,39.5437],[115.725,39.5442],[115.725,39.5442],[115.7385,39.54],[115.7385,39.5396],[115.7385,39.54],[115.7385,39.5396],[115.7527,39.5156],[115.8063,39.51],[115.8063,39.51],[115.8211,39.523],[115.8211,39.523],[115.8285,39.5414],[115.8679,39.5465],[115.8679,39.5465],[115.9153,39.583],[115.9153,39.583],[115.9104,39.6005],[115.9104,39.6005],[115.9572,39.5608],[115.9781,39.5959],[115.9954,39.577],[116.0262,39.5876],[116.036,39.5719],[116.0989,39.5751],[116.1303,39.5677],[116.1518,39.5834],[116.1987,39.5894],[116.2405,39.564],[116.2578,39.5003],[116.3071,39.4883],[116.3379,39.4555],[116.3619,39.4551],[116.3619,39.4551],[116.4346,39.4426],[116.4549,39.4532],[116.4444,39.4823],[116.4118,39.4828],[116.4019,39.528],[116.4438,39.51],[116.4376,39.5267],[116.4783,39.5354],[116.4734,39.553],[116.5085,39.5511],[116.5245,39.5963],[116.5922,39.6212],[116.5922,39.6212],[116.6206,39.6019],[116.6649,39.6056],[116.7234,39.5926],[116.724,39.5926],[116.7234,39.5926],[116.724,39.5926],[116.7265,39.5954],[116.7265,39.5954],[116.7093,39.618],[116.7487,39.6198],[116.7906,39.5959],[116.8121,39.6157],[116.8497,39.6678],[116.9064,39.6774],[116.9057,39.688],[116.8897,39.6876],[116.8873,39.7253],[116.9168,39.7313],[116.9021,39.7635],[116.9495,39.7787],[116.9181,39.8463],[116.9076,39.8325],[116.8657,39.844],[116.8121,39.8899],[116.7844,39.8913],[116.7826,39.9477],[116.7579,39.9679],[116.7813,40.0349],[116.8201,40.0284],[116.8312,40.0514],[116.8676,40.0417],[116.9279,40.055],[116.9452,40.0413],[117.0252,40.0303],[117.0517,40.0596],[117.1053,40.0743],[117.1053,40.0743],[117.1404,40.0642],[117.1595,40.077],[117.2045,40.0697],[117.21,40.082],[117.2242,40.0949],[117.2242,40.0949],[117.255,40.1145],[117.255,40.1145],[117.255,40.1145],[117.2741,40.1059],[117.3073,40.137],[117.3492,40.1365],[117.3671,40.1726],[117.3671,40.1731],[117.3671,40.1731],[117.3671,40.1726],[117.3837,40.1882],[117.3899,40.228],[117.3511,40.2298],[117.3314,40.2896],[117.295,40.2782],[117.2716,40.3252],[117.2716,40.3252],[117.2433,40.3695],[117.226,40.369],[117.234,40.4173],[117.2636,40.4424],[117.2088,40.5016],[117.263,40.5129],[117.2476,40.5398],[117.2698,40.5607],[117.3486,40.5811]]],"name_en":"Beijing"},{"id":1,"code":"TJ","name":"天津市","label_lon":117.347,"label_lat":39.288,"rings":[[[117.7656,39.4005],[117.8469,39.4079],[117.8715,39.4116],[117.8703,39.4551],[117.8999,39.4745],[117.9122,39.5174],[117.9122,39.5174],[117.9048,39.5336],[117.9338,39.5742],[117.8685,39.5968],[117.8297,39.5899],[117.7668,39.5986],[117.7539,39.5797],[1Line truncated

feature/map/src/main/assets/awards/was.json

@@ -0,0 +1 @@
+{"type":"was","regions":[{"id":0,"code":"AL","name":"Alabama","label_lon":-86.7494,"label_lat":32.72,"rings":[[[-87.3593,35.0012],[-85.6067,34.9847],[-85.4314,34.1249],[-85.185,32.8597],[-85.0699,32.5804],[-84.9604,32.4215],[-85.0042,32.323],[-84.8892,32.2627],[-85.059,32.1367],[-85.0535,32.0108],[-85.1411,31.841],[-85.0426,31.5398],[-85.1138,31.2769],[-85.0042,31.003],[-85.4971,30.9975],[-87.6003,30.9975],[-87.6331,30.8661],[-87.4086,30.6744],[-87.4469,30.5101],[-87.3702,30.4279],[-87.5181,30.2801],[-87.6551,30.2472],[-87.907,30.4115],[-87.9344,30.658],[-88.0111,30.6854],[-88.1042,30.4991],[-88.137,30.3184],[-88.3944,30.3677],[-88.4711,31.8958],[-88.2411,33.7963],[-88.0987,34.8916],[-88.2027,34.9957]]]},{"id":1,"code":"AK","name":"Alaska","label_lon":-152.8897,"label_lat":62.9226,"rings":[[[-131.602,55.118],[-131.5692,55.2823],[-131.3556,55.1837],[-131.3884,55.0139],[-131.6458,55.0358]],[[-131.8321,55.4247],[-131.6458,55.3042],[-131.7499,55.1289],[-131.8321,55.1892]],[[-132.9767,56.4379],[-132.7357,56.4598],[-132.6317,56.4215],[-132.6645,56.2736],[-132.8781,56.2408],[-133.0698,56.3339]],[[-133.5956,56.3503],[-133.1629,56.3174],[-133.0534,56.1257],[-132.6207,55.9121],[-132.4729,55.7807],[-132.4619,55.6712],[-132.3578,55.6492],[-132.3414,55.5068],[-132.1661,55.3644],[-132.1442,55.2385],[-132.0292,55.2768],[-131.9799,55.1782],[-131.958,54.7894],[-132.0292,54.7017],[-132.3085,54.7182],[-132.3852,54.9153],[-132.4838,54.8989],[-132.6865,55.0468],[-132.7467,54.9975],[-132.9165,55.0468],[-132.8891,54.8989],[-132.7303,54.9372],[-132.6262,54.8825],[-132.6755,54.6798],[-132.8672,54.7017],[-133.1575,54.9592],[-133.2396,55.0906],[-133.2232,55.2275],[-133.4532,55.2166],[-133.4532,55.3206],[-133.278,55.3316],[-133.1027,55.4247],[-133.1794,55.589],[-133.3875,55.6219],[-133.4204,55.8848],[-133.497,56.0162],[-133.6394,55.9231],[-133.6942,56.071],[-133.5463,56.1422],[-133.6668,56.312]],[[-133.738,55.5561],[-133.5463,55.4904],[-133.4149,55.5726],[-133.2834,55.5342],[-133.4204,55.3864],[-133.634,55.4302]],[[-133.9078,56.9308],[-134.0502,57.0294],[-133.8859,57.0952],[-133.3437,57.002],[-133.1027,57.0075],[-132.9329,56.8213],[-132.6207,56.668],[-132.6536,56.5529],[-132.8179,56.4927],[-133.0425,56.5201],[-133.2013,56.4489],[-133.4204,56.4927],[-133.6613,56.4489],[-133.7106,56.6844],[-133.6887,56.8377],[-133.8695,56.8432]],[[-134.1159,56.4817],[-134.2529,56.5584],[-134.4007,56.7227],[-134.4172,56.8487],[-134.2967,56.9089],[-134.1707,56.8487],[-134.1433,56.9528],[-133.749,56.772],[-133.7106,56.5968],[-133.8476,56.5748],[-133.9352,56.3777],[-133.8366,56.3229],[-133.9571,56.0929],[-134.1105,56.1422],[-134.1324,55.9998],[-134.231,56.071],[-134.2912,56.3503]],[[-134.6362,56.2846],[-134.6691,56.1696],[-134.806,56.2353],[-135.1785,56.6789],[-135.414,56.8104],[-135.3318,56.9144],[-135.4249,57.1664],[-135.6878,57.369],[-135.4194,57.5662],[-135.299,57.484],[-135.0634,57.4183],[-134.8498,57.4073],[-134.8444,57.2485],[-134.6362,56.7282]],[[-134.7129,58.2234],[-134.3734,58.1467],[-134.1762,58.1577],[-134.1871,58.081],[-133.9023,57.8072],[-134.0995,57.851],[-134.1488,57.7579],[-133.9352,57.6155],[-133.8695,57.3635],[-134.0831,57.2978],[-134.1543,57.2102],[-134.4993,57.0294],[-134.6034,57.0349],[-134.6472,57.2266],[-134.576,57.3416],[-134.6089,57.5114],[-134.7294,57.7195],[-134.7074,57.8291],[-134.7841,58.0974],[-134.9156,58.2125],[-134.9539,58.4096]],[[-135.8576,57.3307],[-135.7152,57.3307],[-135.5673,57.1499],[-135.633,57.024],[-135.8576,56.9966],[-135.8247,57.1937]],[[-136.2793,58.207],[-135.9781,58.2015],[-135.7809,58.2891],[-135.4961,58.1686],[-135.6495,58.0372],[-135.5947,57.9879],[-135.4523,58.1358],[-135.1073,58.0865],[-134.9156,57.9769],[-135.0251,57.7798],[-134.9375,57.7633],[-134.8225,57.5005],[-135.0854,57.4621],[-135.5728,57.6757],[-135.5564,57.4566],[-135.7097,57.369],[-135.8905,57.4073],[-136.0,57.5443],[-136.2081,57.6374],[-136.367,57.8291],[-136.5696,57.9167],[-136.5587,58.0755],[-136.4217,58.1303],[-136.3779,58.2672]],[[-147.0799,60.2006],[-147.5016,59.9486],[-147.5344,59.8501],[-147.874,59.7843],[-147.8028,59.9377],[-147.4359,60.0965],[-147.2058,60.2718]],[[-147.5618,60.5785],[-147.6166,60.3704],[-147.759,60.1568],[-147.9562,60.228],[-147.7919,60.4744]],[[-147.7864,70.2453],[-147.6823,70.2015],[-147.162,70.1577],[-146.8882,70.185],[-146.5103,70.185],[-146.0995,70.1467],[-145.8585,70.1686],[-145.623,70.0865],[-145.1958,69.9934],[-144.6207,69.9714],[-144.4619,70.0262],[-144.0785,70.0591],[-143.9142,70.1303],[-143.4979,70.1412],[-143.5034,70.0919],[-143.2569,70.1193],[-142.7476,70.0426],[-142.4025,69.9167],[-142.0794,69.8564],[-142.0082,69.8017],[-141.7125,69.7907],[-141.4331,69.6976],[-141.3784,69.6373],[-141.2086,69.6866],[-141.0005,69.6483],[-141.0005,60.3046],[-140.5349,60.2225],[-140.4747,60.3101],[-139.9872,60.1842],[-139.6969,60.343],[-139.089,60.3594],[-139.1985,60.091],[-139.0452,59.9979],[-138.7001,59.9103],[-138.6235,59.7679],[-137.6047,59.2421],[-137.4459,58.908],[-137.2652,59.0011],[-136.827,59.16],[-136.5806,59.165Line truncated

feature/map/src/main/assets/awards/waz.json

@@ -0,0 +1 @@
+{"type":"waz","regions":[{"id":1,"code":"1","name":"1","label_lon":-140,"label_lat":75,"rings":[[[-109.0,85.0],[-109.0,77.5],[-103.2588,75.2824],[-103.4495,72.3827],[-99.2896,70.6113],[-102.0,68.0],[-102.0,60.0],[-139.0569,60.0001],[-138.7074,59.9061],[-138.6686,59.8091],[-138.626,59.7686],[-137.6062,59.2436],[-137.5007,58.9835],[-137.5266,58.9059],[-137.4512,58.9081],[-137.281,59.001],[-136.8272,59.1604],[-136.5843,59.166],[-136.4897,59.2595],[-136.4956,59.2754],[-136.4695,59.284],[-136.4771,59.4656],[-136.3681,59.449],[-136.3055,59.4644],[-136.2387,59.5242],[-136.2393,59.5592],[-136.3538,59.5998],[-136.1933,59.6401],[-135.9529,59.6622],[-135.4793,59.798],[-135.3601,59.7376],[-135.2336,59.6962],[-135.2198,59.6627],[-135.1575,59.6257],[-135.1179,59.6231],[-135.0289,59.5637],[-135.0275,59.4748],[-135.101,59.4276],[-134.9897,59.3871],[-135.0305,59.3466],[-134.9596,59.2808],[-134.7007,59.2489],[-134.6793,59.1925],[-134.5659,59.1312],[-134.4831,59.1316],[-134.3821,59.0386],[-134.4072,58.9796],[-134.3138,58.962],[-134.3365,58.9235],[-134.2579,58.8612],[-133.8404,58.7293],[-133.7068,58.6117],[-133.3772,58.4303],[-133.462,58.3879],[-133.346,58.2769],[-133.1722,58.1536],[-133.0701,58.0002],[-132.8689,57.8393],[-132.7512,57.6962],[-132.5542,57.4971],[-132.37,57.35],[-132.2487,57.2116],[-132.3688,57.0917],[-132.0449,57.045],[-132.1237,56.8739],[-131.8735,56.806],[-131.9009,56.7537],[-131.8604,56.703],[-131.8353,56.5994],[-131.5815,56.6123],[-131.4716,56.5523],[-131.1726,56.4494],[-131.0884,56.4062],[-130.7825,56.3671],[-130.6242,56.2672],[-130.4683,56.2431],[-130.4264,56.1415],[-130.2468,56.0966],[-130.104,56.1229],[-130.0037,56.0081],[-130.0178,55.9119],[-130.0041,55.9074],[-130.1524,55.7664],[-130.1481,55.7152],[-130.1118,55.6829],[-130.1281,55.5809],[-130.09,55.498],[-130.0413,55.4517],[-130.0211,55.3379],[-129.9742,55.282],[-130.1029,55.1926],[-130.1876,55.0629],[-130.346,54.9177],[-130.5682,54.7922],[-130.6591,54.7631],[-130.6257,54.7381],[-130.6156,54.7074],[-134.5376,54.2944],[-140.0,50.0],[-140.0,40.0],[-190.0,40.0],[-190.0,53.0],[-167.6871,66.6671],[-180.0,75.0],[-180.0,85.0]]]},{"id":2,"code":"2","name":"2","label_lon":-82.5,"label_lat":70,"rings":[[[-109.0,85.0],[-109.0,77.5],[-103.2588,75.2824],[-103.4495,72.3827],[-99.2896,70.6113],[-102.0,68.0],[-102.0,60.0],[-85.0,60.0],[-80.8725,54.5159],[-79.7772,51.8514],[-79.6522,51.6179],[-79.5157,51.4606],[-79.5176,50.0],[-60.0,50.0],[-55.9546,51.7455],[-55.4041,51.765],[-49.0,53.0],[-52.2437,59.5838],[-57.8076,67.1394],[-67.854,74.2269],[-74.0332,75.4972],[-74.8618,77.4191],[-73.5809,78.5637],[-69.8831,79.5013],[-68.2947,80.439],[-60.0073,82.2668],[-60.0,85.0]]]},{"id":3,"code":"3","name":"3","label_lon":-125,"label_lat":45,"rings":[[[-120.0,60.0],[-139.0569,60.0001],[-138.7074,59.9061],[-138.6686,59.8091],[-138.626,59.7686],[-137.6062,59.2436],[-137.5007,58.9835],[-137.5266,58.9059],[-137.4512,58.9081],[-137.281,59.001],[-136.8272,59.1604],[-136.5843,59.166],[-136.4897,59.2595],[-136.4956,59.2754],[-136.4695,59.284],[-136.4771,59.4656],[-136.3681,59.449],[-136.3055,59.4644],[-136.2387,59.5242],[-136.2393,59.5592],[-136.3538,59.5998],[-136.1933,59.6401],[-135.9529,59.6622],[-135.4793,59.798],[-135.3601,59.7376],[-135.2336,59.6962],[-135.2198,59.6627],[-135.1575,59.6257],[-135.1179,59.6231],[-135.0289,59.5637],[-135.0275,59.4748],[-135.101,59.4276],[-134.9897,59.3871],[-135.0305,59.3466],[-134.9596,59.2808],[-134.7007,59.2489],[-134.6793,59.1925],[-134.5659,59.1312],[-134.4831,59.1316],[-134.3821,59.0386],[-134.4072,58.9796],[-134.3138,58.962],[-134.3365,58.9235],[-134.2579,58.8612],[-133.8404,58.7293],[-133.7068,58.6117],[-133.3772,58.4303],[-133.462,58.3879],[-133.346,58.2769],[-133.1722,58.1536],[-133.0701,58.0002],[-132.8689,57.8393],[-132.7512,57.6962],[-132.5542,57.4971],[-132.37,57.35],[-132.2487,57.2116],[-132.3688,57.0917],[-132.0449,57.045],[-132.1237,56.8739],[-131.8735,56.806],[-131.9009,56.7537],[-131.8604,56.703],[-131.8353,56.5994],[-131.5815,56.6123],[-131.4716,56.5523],[-131.1726,56.4494],[-131.0884,56.4062],[-130.7825,56.3671],[-130.6242,56.2672],[-130.4683,56.2431],[-130.4264,56.1415],[-130.2468,56.0966],[-130.104,56.1229],[-130.0037,56.0081],[-130.0178,55.9119],[-130.0041,55.9074],[-130.1524,55.7664],[-130.1481,55.7152],[-130.1118,55.6829],[-130.1281,55.5809],[-130.09,55.498],[-130.0413,55.4517],[-130.0211,55.3379],[-129.9742,55.282],[-130.1029,55.1926],[-130.1876,55.0629],[-130.346,54.9177],[-130.5682,54.7922],[-130.6591,54.7631],[-130.6257,54.7381],[-130.6156,54.7074],[-134.5376,54.2944],[-140.0,50.0],[-140.0,40.0],[-130.0,40.0],[-130.0,32.5],[-120.0,32.5],[-117.1249,32.534],[-114.7197,32.7187],[-114.7643,32.6427],[-114.8087,32.6191],[-114.7997,32.5924],[-114.8137,32.5613],[-114.7932,32.5696],[-114.7916,32.5558],[-114.8057,32.5467],[-114.8135,32.4943],[-111.0748,31.3322],[-109.05,31.3325],[-109.0501,41.0007],[-111.0467,40.9979],[-111.049,44.474],[-111.1227,44.4937],[-111.1394,44.5171],[-111.1317,44.5326],[-111.177,44.5509],[-111.1808,44.569Line truncated

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

@@ -0,0 +1,416 @@
+/*
+ * 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.feature.map
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.Paint
+import android.graphics.Path
+import org.json.JSONObject
+import org.osmdroid.views.MapView
+import org.osmdroid.views.Projection
+import org.osmdroid.views.overlay.Overlay
+import java.io.InputStream
+import kotlin.math.abs
+import kotlin.math.max
+import kotlin.math.min
+
+/**
+ * One administrative/boundary region loaded from the award GeoJSON assets.
+ *
+ * @param code     match key against award statistics (e.g. "GD", "34", "24", "CA", "318")
+ * @param name     display label in the source language (province/prefecture/state/country name)
+ * @param nameEn   optional English display label (null when the source already is English)
+ * @param labelLon/labelLat preferred label anchor (usually the region centroid)
+ * @param rings    polygon exterior rings as lon/lat pairs; the overlay projects
+ *                 them per frame with the same projection helpers as the grid overlay
+ */
+data class AwardRegion(
+    val code: String,
+    val name: String,
+    val nameEn: String? = null,
+    val labelLon: Double,
+    val labelLat: Double,
+    val rings: List<List<DoubleArray>>,
+    val forceLabel: Boolean = false
+)
+
+/**
+ * Loads and caches the award boundary assets (assets/awards/<type>.json).
+ * Format (generated by the awarddata/convert2.py pipeline):
+ *   {"type": "wapc", "regions": [{"id":..,"code":"GD","name":"广东省",
+ *     "label_lon":..,"label_lat":..,"rings":[[[lon,lat],...],...]}, ...]}
+ */
+object AwardBoundaryData {
+
+    private val cache = mutableMapOf<AwardAsset, List<AwardRegion>>()
+
+    enum class AwardAsset(val fileName: String) {
+        WAPC("wapc.json"),
+        WAJA("waja.json"),
+        WAZ("waz.json"),
+        WAS("was.json"),
+        DXCC("dxcc.json")
+    }
+
+    fun load(context: Context, asset: AwardAsset): List<AwardRegion> {
+        cache[asset]?.let { return it }
+        val regions = try {
+            val stream: InputStream = context.assets.open("awards/${asset.fileName}")
+            val text = stream.bufferedReader().use { it.readText() }
+            val root = JSONObject(text)
+            val array = root.optJSONArray("regions") ?: return emptyList()
+            val list = mutableListOf<AwardRegion>()
+            for (i in 0 until array.length()) {
+                val o = array.optJSONObject(i) ?: continue
+                val ringsArray = o.optJSONArray("rings") ?: continue
+                val rings = mutableListOf<List<DoubleArray>>()
+                for (r in 0 until ringsArray.length()) {
+                    val ring = ringsArray.optJSONArray(r) ?: continue
+                    val points = mutableListOf<DoubleArray>()
+                    for (p in 0 until ring.length()) {
+                        val pt = ring.optJSONArray(p) ?: continue
+                        if (pt.length() >= 2) points.add(doubleArrayOf(pt.getDouble(0), pt.getDouble(1)))
+                    }
+                    if (points.size >= 3) rings.add(points)
+                }
+                if (rings.isEmpty()) continue
+                list.add(
+                    AwardRegion(
+                        code = o.optString("code"),
+                        name = o.optString("name"),
+                        nameEn = o.optString("name_en").takeIf { it.isNotEmpty() },
+                        labelLon = o.optDouble("label_lon", 0.0),
+                        labelLat = o.optDouble("label_lat", 0.0),
+                        rings = rings,
+                        forceLabel = o.optBoolean("force_label", false)
+                    )
+                )
+            }
+            list
+        } catch (_: Exception) {
+            emptyList()
+        }
+        cache[asset] = regions
+        return regions
+    }
+}
+
+/**
+ * Renders award boundary regions (provinces/prefectures/CQ zones/states/
+ * countries) with the same visual language as the VUCC grid overlay:
+ * yellow boundary lines, green fill for worked regions, yellow labels.
+ *
+ * Worked regions are matched by [workedCodes] against each region's [AwardRegion.code]
+ * (e.g. {"GD", "ZJ", "HK", ...} for WAPC). All region boundaries are always drawn
+ * so missing regions stay visible; only worked ones get the green fill.
+ */
+class AwardBoundaryOverlay : Overlay() {
+
+    private val linePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        strokeWidth = 1.5f
+        style = Paint.Style.STROKE
+        color = Color.argb(160, 255, 224, 130)
+    }
+    private val labelPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        textSize = 22f
+        style = Paint.Style.FILL
+        color = Color.argb(220, 255, 224, 130)
+        setShadowLayer(3f, 2f, 2f, Color.BLACK)
+    }
+    private val workedPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        style = Paint.Style.FILL
+        color = Color.argb(90, 76, 217, 100)
+    }
+
+    /** Boundary regions to render; assigning recomputes culling bounds. */
+    var regions: List<AwardRegion> = emptyList()
+        set(value) {
+            field = value
+            regionBounds.clear()
+            for (r in value) {
+                var minLon = Double.MAX_VALUE; var minLat = Double.MAX_VALUE
+                var maxLon = -Double.MAX_VALUE; var maxLat = -Double.MAX_VALUE
+                for (ring in r.rings) for (pt in ring) {
+                    if (pt[0] < minLon) minLon = pt[0]
+                    if (pt[0] > maxLon) maxLon = pt[0]
+                    if (pt[1] < minLat) minLat = pt[1]
+                    if (pt[1] > maxLat) maxLat = pt[1]
+                }
+                regionBounds.add(doubleArrayOf(minLon, minLat, maxLon, maxLat))
+            }
+        }
+
+    /** Codes of worked regions -> green fill. */
+    var workedCodes: Set<String> = emptySet()
+
+    /** Bounding boxes (computed on region assignment) for cheap culling. */
+    private val regionBounds = mutableListOf<DoubleArray>() // [minLon,minLat,maxLon,maxLat]
+
+    override fun setEnabled(on: Boolean) {
+        super.setEnabled(on)
+    }
+
+    override fun draw(canvas: Canvas, mapView: MapView, shadow: Boolean) {
+        if (shadow || !isEnabled || regions.isEmpty()) return
+        val projection = mapView.projection
+        val zoom = mapView.zoomLevelDouble
+        val worldWidthPx = 256.0 * Math.pow(2.0, zoom)
+
+        // Visible bounding box (same anchor-on-center approach as the grid overlay).
+        val north = projection.fromPixels(0, 0)
+        val south = projection.fromPixels(canvas.width, canvas.height)
+        val topLat = max(north.latitude, south.latitude).coerceIn(-90.0, 90.0)
+        val bottomLat = min(north.latitude, south.latitude).coerceIn(-90.0, 90.0)
+        val viewCenter = projection.fromPixels(canvas.width / 2, canvas.height / 2)
+        val centerLon = viewCenter.longitude
+        val halfSpanDeg = (canvas.width / 2.0) / worldWidthPx * 360.0
+        val leftLon = centerLon - halfSpanDeg
+        val rightLon = centerLon + halfSpanDeg
+
+        labelPaint.textAlign = Paint.Align.CENTER
+        val fontMetrics = labelPaint.fontMetrics
+        val textHalfHeight = (fontMetrics.descent + fontMetrics.ascent) / 2f
+        // Label language follows the system: Chinese UI keeps the source
+        // (Chinese/Japanese) names; any other UI language uses the English
+        // name when the asset provides one (falls back to the source name).
+        val useEnglishLabels = mapView.context.resources.configuration.locales[0].language != "zh"
+
+        for (i in regions.indices) {
+            val region = regions[i]
+            val b = regionBounds.getOrNull(i) ?: continue
+            // Cull: region bbox outside the visible span (with wrap slack).
+            if (b[1] > topLat || b[3] < bottomLat) continue
+            if (b[0] > rightLon || b[2] < leftLon) continue
+            val worked = region.code in workedCodes
+
+            val path = Path()
+            var pathHasPoints = false
+            for (ring in region.rings) {
+                // Split each ring into consecutive segments at the antimeridian
+                // (±180°) and draw each as its own sub-path. Naively normalizing
+                // every vertex to [-180,180) folds vertices that sit on the
+                // "far" side of ±180 onto the opposite screen edge, drawing a
+                // spurious line that sweeps across the whole map (Russia/Fiji/
+                // Antarctica for DXCC, the Pacific CQ zones for WAZ). Splitting
+                // keeps each segment contiguous. Each segment then gets ONE
+                // per-segment longitude offset (in whole 360° turns) chosen to
+                // sit closest to the view center, so vertices far from the
+                // center are not folded to ±180 the wrong way at low zoom.
+                // A ring that was NOT split keeps implicit closure (close());
+                // a SPLIT ring must NOT be closed per segment — each close()
+                // would draw a straight chord across the map between the two
+                // cut ends (visible as a bogus Russia border line), so the
+                // cut edges are left open.
+                val segments = splitRingAtAntimeridian(ring)
+                val closeRing = segments.size == 1
+                for (segment in segments) {
+                    if (segment.isEmpty()) continue
+                    pathHasPoints = traceSegment(path, segment, projection, centerLon, worldWidthPx, closeRing) || pathHasPoints
+                }
+            }
+            if (!pathHasPoints) continue
+
+            if (worked) canvas.drawPath(path, workedPaint)
+            canvas.drawPath(path, linePaint)
+
+            // Label: draw when its anchor is on screen and the region is big
+            // enough on screen to hold the text (avoid clutter at low zoom).
+            val labelLonNorm = normalizeLon(region.labelLon)
+            if (labelLonNorm < leftLon - 1.0 || labelLonNorm > rightLon + 1.0) continue
+            if (region.labelLat < bottomLat - 1.0 || region.labelLat > topLat + 1.0) continue
+            val lx = projectionToX(projection, labelLonNorm, centerLon, worldWidthPx) ?: continue
+            val ly = projectionToY(projection, region.labelLat) ?: continue
+            // Screen-size gate: the label only when the region spans enough px.
+            // force_label regions (HK / Macau) always draw — their tiny land
+            // bbox would otherwise stay below the gate forever, and their label
+            // anchor sits out on the sea where there is room for the text.
+            val regionH = (projectionToY(projection, b[3]) ?: 0f) - (projectionToY(projection, b[1]) ?: 0f)
+            if (abs(regionH) < MIN_LABEL_REGION_PX && !region.forceLabel) continue
+            val label = if (useEnglishLabels) region.nameEn ?: region.name else region.name
+            canvas.drawText(label, lx, ly - textHalfHeight, labelPaint)
+        }
+    }
+
+    /**
+     * Splits a ring's vertices into consecutive segments that do NOT cross the
+     * antimeridian. Vertices are first normalized to [-180,180); whenever two
+     * consecutive vertices differ by more than 180° in longitude (the ring
+     * wraps over ±180), the segment is closed there and a new segment starts.
+     *
+     * A ring that crosses the antimeridian (e.g. Russia's eastern tip, or the
+     * Pacific CQ zones whose raw lon runs past ±180) becomes two segments, each
+     * kept geometrically contiguous so no spurious long edge is drawn.
+     */
+    private fun splitRingAtAntimeridian(ring: List<DoubleArray>): List<List<DoubleArray>> {
+        val n = ring.size
+        if (n == 0) return emptyList()
+        val pts = Array(n) { doubleArrayOf(normalizeLon(ring[it][0]), ring[it][1]) }
+        val segments = mutableListOf<MutableList<DoubleArray>>()
+        var cur = mutableListOf<DoubleArray>()
+        cur.add(pts[0])
+        for (i in 1 until n) {
+            val prevLon = pts[i - 1][0]
+            val lon = pts[i][0]
+            if (abs(lon - prevLon) > 180.0) {
+                // Crossed the antimeridian. Do NOT drop this edge — that would
+                // leave a visible gap in the outline (WAZ Pacific zones 1/19/
+                // 31/32, e.g. zone 31's 40°N boundary from 130°W to 160°E).
+                // Split the edge IN TWO at ±180 instead: each half stays in its
+                // own segment, so the outline closes across the map's left and
+                // right edges. The crossing latitude is interpolated along the
+                // edge (constant for latitude-aligned edges).
+                val a = pts[i - 1]
+                val b = pts[i]
+                val span = 360.0 - abs(lon - prevLon) // shortest angular distance
+                val edgeLon = if (prevLon < lon) -180.0 else 180.0 // side being crossed
+                val t = abs(edgeLon - prevLon) / span
+                val latAt = a[1] + (b[1] - a[1]) * t
+                cur.add(doubleArrayOf(edgeLon, latAt))
+                if (cur.size >= 2) segments.add(cur)
+                cur = mutableListOf()
+                cur.add(doubleArrayOf(-edgeLon, latAt))
+            }
+            cur.add(pts[i])
+        }
+        if (cur.size >= 2) segments.add(cur)
+        // A fully-winding ring may have collapsed into a single segment after
+        // normalization (no actual crossing between consecutive vertices); in
+        // that case fall back to the whole ring as one segment.
+        if (segments.isEmpty()) segments.add(mutableListOf<DoubleArray>().also { it.addAll(pts) })
+        return segments
+    }
+
+    /**
+     * Projects [segment] into [path], keeping the segment's geometry
+     * contiguous on screen.
+     *
+     * Longitudes are normalized once when the ring is split, and every vertex
+     * of a segment lies within 180° of its neighbours (a segment never crosses
+     * the antimeridian). We anchor on the segment's FIRST vertex: its screen x
+     * comes from [projectionToX] (correctly placed relative to the view
+     * center), and every other vertex is offset by the *continuous* longitude
+     * difference from that anchor, scaled by worldWidthPx. Because the whole
+     * segment stays on the "near" side of ±180 relative to its anchor, no
+     * vertex is folded to the opposite screen edge — that fold is what drew
+     * the spurious long lines across the map (Russia/Fiji/Antarctica for
+     * DXCC, the Pacific CQ zones for WAZ).
+     *
+     * @return true if at least one point was placed in the path
+     */
+    private fun traceSegment(
+        path: Path,
+        segment: List<DoubleArray>,
+        projection: Projection,
+        centerLon: Double,
+        worldWidthPx: Double,
+        closeRing: Boolean
+    ): Boolean {
+        if (segment.isEmpty()) return false
+        val anchorLon = segment[0][0]
+        val anchorX = projectionToX(projection, anchorLon, centerLon, worldWidthPx) ?: return false
+        var penDown = false
+        var any = false
+        var firstX = 0f
+        var firstY = 0f
+        var lastX = 0f
+        var lastY = 0f
+        var prevDelta = 0.0
+        for (i in segment.indices) {
+            val pt = segment[i]
+            // Continuous longitude difference from the anchor — no per-vertex
+            // fold. For ordinary segments (span < 180° after the antimeridian
+            // split) the raw delta is already correct. For full-circle rings
+            // (e.g. Antarctica, which runs from -180° eastward to +178° and
+            // relies on close() to seal a ~1.7° gap at the antimeridian) the
+            // raw delta approaches ±360°. Unwrapping keeps each vertex within
+            // 180° of its neighbours (a spurious fold would throw the path a
+            // full world turn and draw a line across the map).
+            val delta = if (i == 0) 0.0 else {
+                var d = pt[0] - anchorLon
+                while (d - prevDelta > 180.0) d -= 360.0
+                while (prevDelta - d > 180.0) d += 360.0
+                d
+            }
+            val x = anchorX + (delta / 360.0 * worldWidthPx).toFloat()
+            val y = projectionToY(projection, pt[1]) ?: continue
+            if (!penDown) {
+                path.moveTo(x, y)
+                firstX = x
+                firstY = y
+                penDown = true
+            } else {
+                path.lineTo(x, y)
+            }
+            lastX = x
+            lastY = y
+            prevDelta = delta
+            any = true
+        }
+        if (penDown && closeRing) {
+            // Closing chord: take the SHORT way around. A full-circle ring
+            // (Antarctica) unwraps to ~360° so a plain close() would draw a
+            // chord across the whole map; folding the first point onto the
+            // adjacent world copy keeps the seal at the antimeridian tiny.
+            var fx = firstX
+            while (fx - lastX > worldWidthPx / 2f) fx -= worldWidthPx.toFloat()
+            while (lastX - fx > worldWidthPx / 2f) fx += worldWidthPx.toFloat()
+            path.lineTo(fx, firstY)
+        }
+        return any
+    }
+
+    /** X pixel for a longitude (Mercator X is linear in longitude). */
+    private fun projectionToX(projection: Projection, lon: Double, centerLon: Double, worldWidthPx: Double): Float? {
+        var delta = lon - centerLon
+        while (delta > 180.0) delta -= 360.0
+        while (delta < -180.0) delta += 360.0
+        val geo = org.osmdroid.util.GeoPoint(0.0, centerLon)
+        val p = projection.toPixels(geo, null)
+        return (p.x + delta / 360.0 * worldWidthPx).toFloat()
+    }
+
+    /** Y pixel for a latitude. Mercator blows up at the poles (lat ±90 → ±∞),
+     *  so clamp to the Web-Mercator maximum (~±85.05113°) — the rendered map
+     *  edge. Raw data points AT the poles (e.g. WAZ zones and Antarctica rings
+     *  with [-90, ...] vertices) otherwise project far outside the canvas and
+     *  draw long spurious lines from the pole to the map edge. */
+    private fun projectionToY(projection: Projection, lat: Double): Float? {
+        val clamped = lat.coerceIn(-MAX_MERCATOR_LAT, MAX_MERCATOR_LAT)
+        val geo = org.osmdroid.util.GeoPoint(clamped, 0.0)
+        val p = projection.toPixels(geo, null)
+        return p.y.toFloat()
+    }
+
+    private fun normalizeLon(lon: Double): Double {
+        var l = lon % 360.0
+        // Normalize into (-180, 180] — +180, not -180. An edge whose endpoint
+        // sits ON the antimeridian (e.g. a ring starting at -180°) must not be
+        // seen as a >180° jump away from a nearby 165° vertex; keeping the
+        // antimeridian value as +180 makes such edges short and un-split.
+        if (l <= -180.0) l += 360.0
+        if (l > 180.0) l -= 360.0
+        return l
+    }
+
+    private companion object {
+        const val MIN_LABEL_REGION_PX = 42f
+        const val MAX_MERCATOR_LAT = 85.05113 // Web Mercator latitude limit
+    }
+}

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

@@ -0,0 +1,502 @@
+/*
+ * 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.feature.map
+
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.Paint
+import org.osmdroid.views.MapView
+import org.osmdroid.views.Projection
+import org.osmdroid.views.overlay.Overlay
+import kotlin.math.ceil
+import kotlin.math.floor
+import kotlin.math.max
+import kotlin.math.min
+
+/**
+ * Maidenhead locator grid overlay, drawn directly on the map canvas.
+ *
+ * Zoom levels (map maxZoom = 7):
+ *  - zoom < GRID_ZOOM_SUB: 10° x 20° fields with 2-character labels (e.g. "PM")
+ *  - zoom >= GRID_ZOOM_SUB: 1° x 2° squares with 4-character labels (e.g. "PM95")
+ *
+ * All geometry is computed per-frame from the projection, so the overlay
+ * stays correct while panning/zooming. Grid lines that cross the antimeridian
+ * are drawn in segments clamped to the visible bounding box.
+ */
+class MaidenheadGridOverlay : Overlay() {
+
+    private val linePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        strokeWidth = 1.5f
+        style = Paint.Style.STROKE
+        color = Color.argb(160, 255, 224, 130)
+    }
+    private val labelPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        textSize = 26f
+        style = android.graphics.Paint.Style.FILL
+        color = Color.argb(220, 255, 224, 130)
+        setShadowLayer(3f, 2f, 2f, Color.BLACK)
+    }
+    private val workedPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        style = android.graphics.Paint.Style.FILL
+        color = Color.argb(90, 76, 217, 100)
+    }
+    private val roamStripePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        style = Paint.Style.STROKE
+        strokeWidth = 14f
+        // Same alpha as the green worked fill (90) — user req: stripe opacity
+        // must match the green grid. Wide 14f stripes at 44f spacing read as a
+        // sparse GridMaster-style zebra (user picked spacing 44 / width 14).
+        color = Color.argb(90, 66, 133, 244)
+    }
+    private val ownLinePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        strokeWidth = 6f
+        style = Paint.Style.STROKE
+        // 与普通网格线同色(淡黄), 仅加粗 — 用户要求当前网格框线不换色
+        color = Color.argb(160, 255, 224, 130)
+    }
+    private val selectedLinePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        strokeWidth = 4.5f
+        style = Paint.Style.STROKE
+        color = Color.argb(255, 76, 217, 100)
+    }
+
+    /** Worked gridsquares (4-char, uppercase) to highlight, e.g. {"OL62", "PM95"}. */
+    var workedGrids: Set<String> = emptySet()
+
+    /**
+     * Gridsquares the station operated from (4-char, uppercase) — drawn with
+     * blue 45° stripes (GridMaster-style zebra), e.g. {"OL62", "PM95"}.
+     */
+    var roamedGrids: Set<String> = emptySet()
+
+    /** The station's own 4-char gridsquare, drawn with a distinct outline. */
+    var ownGrid: String? = null
+
+    /** The currently tapped worked grid (4-char) highlighted with a distinct outline, or null. */
+    var selectedGrid: String? = null
+
+    /** Viewport width, refreshed each draw; used by projectionToX bounds. */
+    private var canvasWidthPx = 1080f
+
+    override fun draw(canvas: Canvas, mapView: MapView, shadow: Boolean) {
+        if (shadow || !isEnabled) return
+        val projection = mapView.projection
+        val zoom = mapView.zoomLevelDouble
+        canvasWidthPx = canvas.width.toFloat()
+        val cellLat = if (zoom >= GRID_ZOOM_SUB) SUB_SQUARE_LAT else FIELD_LAT
+        val cellLon = if (zoom >= GRID_ZOOM_SUB) SUB_SQUARE_LON else FIELD_LON
+
+        // Visible bounding box. Do NOT derive longitude bounds from the left/
+        // right edge pixels: osmdroid normalizes them to [-180,180), which both
+        // garbles antimeridian-crossing views AND makes any global view (span
+        // > 180°) look like an antimeridian crossing — unwrapping then produced
+        // an inverted range and ALL meridians vanished at low zoom. Instead
+        // anchor on the view-center longitude and expand by the half-width in
+        // degrees; the range is continuous (may exceed ±180) and cell indices
+        // beyond 18 wrap correctly via normalizeLon().
+        val north = projection.fromPixels(0, 0)
+        val south = projection.fromPixels(canvas.width, canvas.height)
+        val topLat = max(north.latitude, south.latitude).coerceIn(-90.0, 90.0)
+        val bottomLat = min(north.latitude, south.latitude).coerceIn(-90.0, 90.0)
+        val worldWidthPx = 256.0 * Math.pow(2.0, zoom)
+        val viewCenter = projection.fromPixels(canvas.width / 2, canvas.height / 2)
+        val centerLon = viewCenter.longitude
+        val halfSpanDeg = (canvas.width / 2.0) / worldWidthPx * 360.0
+        val leftLon = centerLon - halfSpanDeg
+        val rightLon = centerLon + halfSpanDeg
+
+        val firstRow = floor(bottomLat / cellLat).toInt()
+        val lastRow = ceil(topLat / cellLat).toInt()
+        // Longitude cell indices are in the continuous unwrapped space and may
+        // exceed the [-180, 180) range when the view crosses the antimeridian
+        // or spans world repeats; labels normalize each cell back.
+        val firstCol = floor(leftLon / cellLon).toInt()
+        val lastCol = ceil(rightLon / cellLon).toInt()
+        // At low zoom the world is narrower than the viewport and osmdroid shows
+        // repeating copies on both sides. The visible bounding box spans more
+        // than 360° of longitude there; extend the column range by whole world
+        // turns so meridians, fills and labels tile across the repeats too.
+        val worldTurns = ceil(((rightLon - leftLon) / 360.0) - 1e-9).toInt().coerceAtLeast(0)
+        val colRepeats = if (worldTurns > 0) worldTurns else 0
+
+        // The station's own grid: always keep a bold outline of the 4-char
+        // square. At sub-square zoom it matches the visible cell grid; at field
+        // zoom (2-char labels) the own 2°x1° square is drawn on top of the
+        // field grid so the operator still sees exactly where they are (user
+        // req: "field zoom must also draw the own 4-char grid, bolded").
+        val ownCell = ownGrid
+        // The tapped worked grid gets a distinct outline (sub-square zoom only).
+        val selectedCell = selectedGrid?.takeIf { zoom >= GRID_ZOOM_SUB }
+
+        // Worked-grid highlight fills.
+        //  - Sub-square zoom: fill each worked 4-char cell directly.
+        //  - Field zoom (two-char labels): do NOT fill whole fields; instead fill
+        //    the individual 2°x1° squares that were worked, without drawing the
+        //    square grid lines — so you see green patches inside the field.
+        if (workedGrids.isNotEmpty()) {
+            if (zoom >= GRID_ZOOM_SUB) {
+                for (row in firstRow..lastRow) {
+                    val lat = row * cellLat
+                    if (lat < -90.0 || lat >= 90.0) continue
+                    val topLatCell = lat + cellLat
+                    if (topLatCell > 90.0) continue
+                    val yTop = projectionToY(projection, topLatCell)
+                    val yBottom = projectionToY(projection, lat)
+                    if (yTop == null || yBottom == null) continue
+                    for (turn in -colRepeats..colRepeats) for (col in firstCol..lastCol) {
+                        val lon = col * cellLon
+                        // World-repeat copies: keep the turn offset in pixels
+                        // (colRepeats is 0 at this zoom today, but the same
+                        // alpha-stacking fix applies if it ever becomes > 0).
+                        val xLeftBase = projectionToX(projection, lon, centerLon, worldWidthPx) ?: continue
+                        val xRightBase = projectionToX(projection, lon + cellLon, centerLon, worldWidthPx) ?: continue
+                        val xLeft = xLeftBase + turn * worldWidthPx.toFloat()
+                        val xRight = xRightBase + turn * worldWidthPx.toFloat()
+                        if (xRight < 0f || xLeft > canvas.width) continue
+                        if (cellLabel(lat, lon, zoom) in workedGrids) {
+                            canvas.drawRect(xLeft, yTop, xRight, yBottom, workedPaint)
+                        }
+                    }
+                }
+            } else {
+                for (grid in workedGrids) {
+                    val cell = gridCellBounds(grid) ?: continue
+                    // World-repeat copies: a 360° turn shifts the cell by a
+                    // full world width in pixels. projectionToX() normalizes
+                    // longitude back into [-180,180), so WITHOUT adding the
+                    // turn*worldWidthPx offset every copy lands on the SAME
+                    // screen x and the cell gets painted 2*colRepeats+1 times
+                    // in place — alpha stacks and the green turns brighter and
+                    // more opaque. Keep the world-width offset on the x.
+                    for (turn in -colRepeats..colRepeats) {
+                        val dLon = turn * 360.0
+                        if (cell.lonRight + dLon <= leftLon || cell.lonLeft + dLon >= rightLon) continue
+                        val yTop = projectionToY(projection, cell.latTop) ?: continue
+                        val yBottom = projectionToY(projection, cell.latBottom) ?: continue
+                        val xLeftBase = projectionToX(projection, cell.lonLeft, centerLon, worldWidthPx) ?: continue
+                        val xRightBase = projectionToX(projection, cell.lonRight, centerLon, worldWidthPx) ?: continue
+                        val xLeft = xLeftBase + turn * worldWidthPx.toFloat()
+                        val xRight = xRightBase + turn * worldWidthPx.toFloat()
+                        if (xRight < 0f || xLeft > canvas.width) continue
+                        if (yBottom < 0f || yTop > canvas.height) continue
+                        canvas.drawRect(xLeft, yTop, xRight, yBottom, workedPaint)
+                    }
+                }
+            }
+        }
+
+        // Roamed/activated grid stripes: blue 45° zebra (GridMaster style) over
+        // every cell the station operated from. Drawn AFTER the worked fills so
+        // a worked+roamed cell shows blue stripes with green between them — the
+        // stripe paint is fully opaque, so the two colors never alpha-blend
+        // into a teal/green mix. Same geometry as the worked fills (per-4-char
+        // cell at both zoom levels). The station's OWN grid is excluded: it
+        // already carries the bold outline and must not be striped (user req).
+        if (roamedGrids.isNotEmpty()) {
+            if (zoom >= GRID_ZOOM_SUB) {
+                for (row in firstRow..lastRow) {
+                    val lat = row * cellLat
+                    if (lat < -90.0 || lat >= 90.0) continue
+                    val topLatCell = lat + cellLat
+                    if (topLatCell > 90.0) continue
+                    val yTop = projectionToY(projection, topLatCell) ?: continue
+                    val yBottom = projectionToY(projection, lat) ?: continue
+                    for (turn in -colRepeats..colRepeats) for (col in firstCol..lastCol) {
+                        val lon = col * cellLon
+                        val xLeftBase = projectionToX(projection, lon, centerLon, worldWidthPx) ?: continue
+                        val xRightBase = projectionToX(projection, lon + cellLon, centerLon, worldWidthPx) ?: continue
+                        val xLeft = xLeftBase + turn * worldWidthPx.toFloat()
+                        val xRight = xRightBase + turn * worldWidthPx.toFloat()
+                        if (xRight < 0f || xLeft > canvas.width) continue
+                        val label = cellLabel(lat, lon, zoom)
+                        if (label in roamedGrids && label != ownGrid) {
+                            drawStripes(canvas, xLeft, yTop, xRight, yBottom)
+                        }
+                    }
+                }
+            } else {
+                for (grid in roamedGrids) {
+                    // The own grid keeps only its bold outline — no stripes.
+                    if (grid == ownGrid) continue
+                    val cell = gridCellBounds(grid) ?: continue
+                    for (turn in -colRepeats..colRepeats) {
+                        val dLon = turn * 360.0
+                        if (cell.lonRight + dLon <= leftLon || cell.lonLeft + dLon >= rightLon) continue
+                        val yTop = projectionToY(projection, cell.latTop) ?: continue
+                        val yBottom = projectionToY(projection, cell.latBottom) ?: continue
+                        val xLeftBase = projectionToX(projection, cell.lonLeft, centerLon, worldWidthPx) ?: continue
+                        val xRightBase = projectionToX(projection, cell.lonRight, centerLon, worldWidthPx) ?: continue
+                        val xLeft = xLeftBase + turn * worldWidthPx.toFloat()
+                        val xRight = xRightBase + turn * worldWidthPx.toFloat()
+                        if (xRight < 0f || xLeft > canvas.width) continue
+                        if (yBottom < 0f || yTop > canvas.height) continue
+                        drawStripes(canvas, xLeft, yTop, xRight, yBottom)
+                    }
+                }
+            }
+        }
+
+        // Vertical lines (meridians). Worked-grid cells are NOT excluded:
+        // the boundary lines between adjacent worked squares must stay visible
+        // so the grid structure remains readable (reverted 2026-09-09 — the
+        // earlier skip logic removed those shared edges entirely).
+        for (turn in -colRepeats..colRepeats) for (col in firstCol..lastCol) {
+            val lon = col * cellLon
+            // World-repeat copies: keep the turn offset in pixels, otherwise
+            // every turn normalizes to the same x and the line paints over
+            // itself 2*colRepeats+1 times (alpha stacking).
+            val xBase = projectionToX(projection, lon, centerLon, worldWidthPx) ?: continue
+            val x = xBase + turn * worldWidthPx.toFloat()
+            for (row in firstRow..lastRow) {
+                val lat = row * cellLat
+                if (lat < -90.0 || lat >= 90.0) continue
+                val topLatCell = lat + cellLat
+                if (topLatCell > 90.0) continue
+                val yTop = projectionToY(projection, topLatCell) ?: continue
+                val yBottom = projectionToY(projection, lat) ?: continue
+                canvas.drawLine(x, yTop, x, yBottom, linePaint)
+            }
+        }
+        // Horizontal lines (parallels).
+        for (row in firstRow..lastRow) {
+            val lat = row * cellLat
+            if (lat <= -90.0 || lat >= 90.0) continue
+            val y = projectionToY(projection, lat)
+            if (y == null) continue
+            for (turn in -colRepeats..colRepeats) for (col in firstCol..lastCol) {
+                val lon = col * cellLon
+                // World-repeat copies: keep the turn offset in pixels (same
+                // alpha-stacking fix as the vertical lines above).
+                val xLeftBase = projectionToX(projection, lon, centerLon, worldWidthPx) ?: continue
+                val xRightBase = projectionToX(projection, lon + cellLon, centerLon, worldWidthPx) ?: continue
+                val xLeft = xLeftBase + turn * worldWidthPx.toFloat()
+                val xRight = xRightBase + turn * worldWidthPx.toFloat()
+                if (xRight < 0f || xLeft > canvas.width) continue
+                canvas.drawLine(xLeft, y, xRight, y, linePaint)
+            }
+        }
+
+        // The station's own grid square: redraw its four borders thicker on top.
+        // The tapped worked grid gets the same treatment in a different color.
+        if (ownCell != null || selectedCell != null) {
+            if (zoom >= GRID_ZOOM_SUB) {
+                for (row in firstRow..lastRow) {
+                    val lat = row * cellLat
+                    if (lat < -90.0 || lat >= 90.0) continue
+                    for (col in firstCol..lastCol) {
+                        val lon = col * cellLon
+                        val label = cellLabel(lat, lon, zoom)
+                        if (label != ownCell && label != selectedCell) continue
+                        val yTop = projectionToY(projection, lat + cellLat) ?: continue
+                        val yBottom = projectionToY(projection, lat) ?: continue
+                        val xLeft = projectionToX(projection, lon, centerLon, worldWidthPx) ?: continue
+                        val xRight = projectionToX(projection, lon + cellLon, centerLon, worldWidthPx) ?: continue
+                        val paint = if (label == selectedCell) selectedLinePaint else ownLinePaint
+                        canvas.drawLine(xLeft, yTop, xRight, yTop, paint)
+                        canvas.drawLine(xLeft, yBottom, xRight, yBottom, paint)
+                        canvas.drawLine(xLeft, yTop, xLeft, yBottom, paint)
+                        canvas.drawLine(xRight, yTop, xRight, yBottom, paint)
+                    }
+                }
+            } else {
+                // Field zoom: the visible grid shows 2-char fields only, but the
+                // station's own 2°x1° square still gets its bold outline drawn
+                // on top of the field grid (user req). selectedCell is null here.
+                val grid = ownCell
+                if (grid != null) {
+                    val cell = gridCellBounds(grid)
+                    if (cell != null) {
+                        for (turn in -colRepeats..colRepeats) {
+                            val dLon = turn * 360.0
+                            if (cell.lonRight + dLon <= leftLon || cell.lonLeft + dLon >= rightLon) continue
+                            val yTop = projectionToY(projection, cell.latTop) ?: continue
+                            val yBottom = projectionToY(projection, cell.latBottom) ?: continue
+                            val xLeftBase = projectionToX(projection, cell.lonLeft, centerLon, worldWidthPx) ?: continue
+                            val xRightBase = projectionToX(projection, cell.lonRight, centerLon, worldWidthPx) ?: continue
+                            val xLeft = xLeftBase + turn * worldWidthPx.toFloat()
+                            val xRight = xRightBase + turn * worldWidthPx.toFloat()
+                            if (xRight < 0f || xLeft > canvas.width) continue
+                            if (yBottom < 0f || yTop > canvas.height) continue
+                            canvas.drawLine(xLeft, yTop, xRight, yTop, ownLinePaint)
+                            canvas.drawLine(xLeft, yBottom, xRight, yBottom, ownLinePaint)
+                            canvas.drawLine(xLeft, yTop, xLeft, yBottom, ownLinePaint)
+                            canvas.drawLine(xRight, yTop, xRight, yBottom, ownLinePaint)
+                        }
+                    }
+                }
+            }
+        }
+
+        // Labels: centered in each cell, only when the cell is large enough on
+        // screen to hold a label (avoid clutter at low zoom).
+        // Field (2-char) labels show at every zoom, subject only to the pixel-
+        // size check below; sub-square (4-char) labels only from LABEL_ZOOM_SUB
+        // (one level above the grid lines, so zoom 6 shows lines but no names).
+        val showLabels = zoom >= LABEL_ZOOM_SUB || cellLat == FIELD_LAT
+        if (!showLabels) return
+        // Estimate on-screen cell height to avoid clutter at low zoom:
+        // project two points 1° apart in latitude and measure the pixel distance.
+        val y1 = projectionToY(projection, 0.0)
+        val y2 = projectionToY(projection, 1.0)
+        if (y1 == null || y2 == null) return
+        val pixelsPerDegree = Math.abs(y2 - y1)
+        if (pixelsPerDegree * cellLat < MIN_LABEL_CELL_PX) return
+
+        labelPaint.textAlign = Paint.Align.CENTER
+        val fontMetrics = labelPaint.fontMetrics
+        val textHalfHeight = (fontMetrics.descent + fontMetrics.ascent) / 2f
+        for (row in firstRow..lastRow) {
+            val lat = row * cellLat
+            if (lat < -90.0 || lat >= 90.0) continue
+            val topLatCell = lat + cellLat
+            if (topLatCell > 90.0) continue
+            val yTop = projectionToY(projection, topLatCell) ?: continue
+            val yBottom = projectionToY(projection, lat) ?: continue
+            // Polar bands (80..90 / -90..-80) extend beyond the map's latitude
+            // limit, so their geometric center falls off-screen and the label
+            // would never be visible. Center the label in the VISIBLE part of
+            // the cell instead; fully off-screen cells are still skipped.
+            val visTop = maxOf(yTop, 0f)
+            val visBottom = minOf(yBottom, canvas.height.toFloat())
+            if (visBottom < 0f || visTop > canvas.height) continue
+            val yCenter = (visTop + visBottom) / 2f - textHalfHeight
+            for (turn in -colRepeats..colRepeats) for (col in firstCol..lastCol) {
+                val lon = col * cellLon
+                // World-repeat copies: keep the turn offset in pixels (same
+                // alpha-stacking fix as the lines above).
+                val xLeftBase = projectionToX(projection, lon, centerLon, worldWidthPx) ?: continue
+                val xRightBase = projectionToX(projection, lon + cellLon, centerLon, worldWidthPx) ?: continue
+                val xLeft = xLeftBase + turn * worldWidthPx.toFloat()
+                val xRight = xRightBase + turn * worldWidthPx.toFloat()
+                if (xRight < 0f || xLeft > canvas.width) continue
+                val label = cellLabel(lat, lon, zoom)
+                canvas.drawText(label, (xLeft + xRight) / 2f, yCenter, labelPaint)
+            }
+        }
+    }
+
+    /**
+     * Draws 45° diagonal stripes (GridMaster-style zebra) clipped to the cell
+     * rectangle, from top-left to bottom-right. The paint is nearly opaque so
+     * stripes stay blue even over a green worked fill underneath.
+     */
+    private fun drawStripes(canvas: Canvas, xLeft: Float, yTop: Float, xRight: Float, yBottom: Float) {
+        if (xRight <= xLeft || yBottom <= yTop) return
+        canvas.save()
+        canvas.clipRect(xLeft, yTop, xRight, yBottom)
+        val height = yBottom - yTop
+        // Start one stripe-width left of the cell so the top-left corner is
+        // always covered; each stripe runs from (x, top) to (x+height, bottom).
+        var x = xLeft - height
+        while (x < xRight) {
+            canvas.drawLine(x, yTop, x + height, yBottom, roamStripePaint)
+            x += STRIPE_SPACING_PX
+        }
+        canvas.restore()
+    }
+
+    /** X pixel for a longitude (meridians are vertical in Web Mercator). */
+    private fun projectionToX(projection: Projection, lon: Double, centerLon: Double, worldWidthPx: Double): Float? {
+        // Do NOT use osmdroid's toPixels() here: at low zoom its wrap-around
+        // logic (getCloserPixel) mis-projects longitudes far from the view
+        // center, which makes meridians vanish while panning. Mercator X is
+        // linear in longitude, so compute it directly:
+        //   x = screenCenterX + (lon - centerLon) / 360 * worldWidthPx
+        var delta = lon - centerLon
+        while (delta > 180.0) delta -= 360.0
+        while (delta < -180.0) delta += 360.0
+        val geo = org.osmdroid.util.GeoPoint(0.0, centerLon)
+        val p = projection.toPixels(geo, null)
+        return (p.x + delta / 360.0 * worldWidthPx).toFloat()
+    }
+
+    /** Y pixel for a latitude, or null when outside the viewport. */
+    private fun projectionToY(projection: Projection, lat: Double): Float? {
+        val geo = org.osmdroid.util.GeoPoint(lat, 0.0)
+        val p = projection.toPixels(geo, null)
+        return p.y.toFloat()
+    }
+
+    private fun cellLabel(lat: Double, lon: Double, zoom: Double): String {
+        // Maidenhead field: longitude 20° fields A-R starting at -180,
+        // latitude 10° fields A-R starting at -90.
+        val lonNorm = normalizeLon(lon)
+        val latNorm = lat.coerceIn(-90.0, 89.999)
+        val fieldLon = ((lonNorm + 180.0) / FIELD_LON).toInt()
+        val fieldLat = ((latNorm + 90.0) / FIELD_LAT).toInt()
+        val field = "${'A' + fieldLon}${'A' + fieldLat}"
+        if (zoom < GRID_ZOOM_SUB) return field
+        // Square: 2° x 1° digits
+        val squareLon = (((lonNorm + 180.0) % FIELD_LON) / SUB_SQUARE_LON).toInt()
+        val squareLat = (((latNorm + 90.0) % FIELD_LAT) / SUB_SQUARE_LAT).toInt()
+        return "$field$squareLon$squareLat"
+    }
+
+    /**
+     * Geographic bounds of a 4-char Maidenhead square (e.g. "OL62"):
+     * 2° wide in longitude, 1° tall in latitude.
+     */
+    private fun gridCellBounds(grid: String): CellBounds? {
+        val g = grid.trim().uppercase()
+        if (g.length < 4) return null
+        val fieldLon = g[0] - 'A'
+        val fieldLat = g[1] - 'A'
+        val sqLon = g[2] - '0'
+        val sqLat = g[3] - '0'
+        if (fieldLon !in 0..17 || fieldLat !in 0..17 || sqLon !in 0..9 || sqLat !in 0..9) return null
+        val lonLeft = -180.0 + fieldLon * FIELD_LON + sqLon * SUB_SQUARE_LON
+        val latBottom = -90.0 + fieldLat * FIELD_LAT + sqLat * SUB_SQUARE_LAT
+        return CellBounds(lonLeft, lonLeft + SUB_SQUARE_LON, latBottom, latBottom + SUB_SQUARE_LAT)
+    }
+
+    private data class CellBounds(
+        val lonLeft: Double,
+        val lonRight: Double,
+        val latBottom: Double,
+        val latTop: Double
+    )
+
+    private fun normalizeLon(lon: Double): Double {
+        var l = lon % 360.0
+        if (l >= 180.0) l -= 360.0
+        if (l < -180.0) l += 360.0
+        return l
+    }
+
+    internal companion object {
+        const val FIELD_LAT = 10.0
+        const val FIELD_LON = 20.0
+        const val SUB_SQUARE_LAT = 1.0
+        const val SUB_SQUARE_LON = 2.0
+        // Zoom at which the 2°x1° sub-square grid lines/fills appear.
+        // 5.0 → 6.0: at zoom 5 a full field spans too little screen width and
+        // the sub-square grid is too dense to read; 6 roughly doubles the
+        // on-screen size of each square.
+        const val GRID_ZOOM_SUB = 6.0
+        // Zoom at which the 4-char sub-square names appear (one level above the
+        // grid lines: zoom 6 = lines only, zoom 6.5+ = lines + names).
+        const val LABEL_ZOOM_SUB = 6.5
+        const val MIN_LABEL_CELL_PX = 48f
+        const val MAX_OVERSHOOT_PX = 64
+        /** Center-to-center spacing of the roamed-grid zebra stripes, in px. */
+        // 44f spacing (was 16f — too dense per user) with 14f-wide stripes;
+        // sparse GridMaster-style zebra.
+        const val STRIPE_SPACING_PX = 44f
+    }
+}

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

@@ -25,27 +25,42 @@ import android.graphics.Paint
 import android.graphics.Rect
 import android.graphics.drawable.Drawable
 import androidx.collection.LruCache
+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.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyRow
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.material3.Card
 import androidx.compose.material3.CardDefaults
 import androidx.compose.material3.ElevatedCard
+import androidx.compose.material3.FilterChip
+import androidx.compose.material3.FilterChipDefaults
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
 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.rotate
+import androidx.compose.ui.draw.scale
+import androidx.compose.ui.graphics.Color as ComposeColor
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
@@ -60,6 +75,9 @@ import androidx.lifecycle.LifecycleEventObserver
 import androidx.lifecycle.compose.LocalLifecycleOwner
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.rtbishop.look4sat.core.domain.model.AwardCalculator
+import com.rtbishop.look4sat.core.domain.model.AwardProgress
+import com.rtbishop.look4sat.core.domain.model.AwardType
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import com.rtbishop.look4sat.core.domain.predict.OrbitalObject
 import com.rtbishop.look4sat.core.domain.predict.OrbitalPos
@@ -80,14 +98,15 @@ import org.osmdroid.views.overlay.Marker
 import org.osmdroid.views.overlay.Polyline
 
 // Overlay indices
-private const val OVERLAY_STATION = 0
-private const val OVERLAY_TRACK = 1
-private const val OVERLAY_FOOTPRINT = 2
-private const val OVERLAY_POSITIONS = 3
-private const val OVERLAY_TERMINATOR = 4
-private const val OVERLAY_SUN = 5
-private const val OVERLAY_MOON = 6
-private const val OVERLAY_COUNT = 7
+private const val OVERLAY_GRID = 0
+private const val OVERLAY_STATION = 1
+private const val OVERLAY_TRACK = 2
+private const val OVERLAY_FOOTPRINT = 3
+private const val OVERLAY_POSITIONS = 4
+private const val OVERLAY_TERMINATOR = 5
+private const val OVERLAY_SUN = 6
+private const val OVERLAY_MOON = 7
+private const val OVERLAY_COUNT = 8
 
 private val minLat = MapView.getTileSystem().minLatitude
 private val maxLat = MapView.getTileSystem().maxLatitude
@@ -135,13 +154,70 @@ private fun MapScreen(uiState: MapState, onAction: (MapAction) -> Unit, mapView:
     val timeString = uiState.mapData?.aosTime ?: "00:00:00"
     val isTimeAos = uiState.mapData?.isTimeAos ?: true
 
+    // Tapped worked grid -> centered QSO dialog. Local UI state: the map is the
+    // only consumer and it resets when leaving the page.
+    var selectedGrid by remember { mutableStateOf<String?>(null) }
+    // Selected award filter. Entering grid mode defaults to VUCC (the plain
+    // worked-grid view); the reset effect below re-asserts that on every entry.
+    var selectedAward by remember { mutableStateOf<AwardType?>(AwardType.VUCC) }
+    // Six-award progress derived from the confirmed QSO store; recomputed when
+    // the store changes (LoTW/Wavelog sync).
+    val awardProgress: List<AwardProgress> = remember(uiState.workedGridQsos) {
+        AwardCalculator.calculate(uiState.workedGridQsos)
+    }
+    // Attach the tap listener whenever grid mode / worked grids change.
+    val workedGrids = uiState.workedGrids
+    val isGridMode = uiState.isGridMode
+    DisposableEffect(isGridMode, workedGrids) {
+        val receiver = object : org.osmdroid.events.MapEventsReceiver {
+            override fun singleTapConfirmedHelper(p: GeoPoint?): Boolean {
+                if (!isGridMode || p == null) return false
+                val zoom = mapView.zoomLevelDouble
+                // Allow tapping worked cells as soon as the 4-char grid LINES
+                // appear (GRID_ZOOM_SUB), not only when labels show (LABEL_ZOOM_SUB).
+                if (zoom < MaidenheadGridOverlay.GRID_ZOOM_SUB) return false
+                val grid = gridOfPoint(p.latitude, p.longitude) ?: return false
+                if (grid !in workedGrids) return false
+                selectedGrid = grid
+                return true
+            }
+
+            override fun longPressHelper(p: GeoPoint?): Boolean = false
+        }
+        val eventsOverlay = org.osmdroid.views.overlay.MapEventsOverlay(receiver)
+        mapView.overlays.add(eventsOverlay)
+        onDispose { mapView.overlays.remove(eventsOverlay) }
+    }
+    // Keep the overlay's selected highlight in sync with the dialog.
+    LaunchedEffect(selectedGrid) {
+        (mapView.overlays.getOrNull(OVERLAY_GRID) as? MaidenheadGridOverlay)?.selectedGrid = selectedGrid
+        mapView.invalidate()
+    }
+    // Re-assert the VUCC default each time grid mode is entered; while already
+    // in grid mode the user's chip choice is preserved.
+    LaunchedEffect(uiState.isGridMode) {
+        if (uiState.isGridMode) selectedAward = AwardType.VUCC
+    }
+
     LaunchedEffect(uiState.track) {
+        // In grid mode the map is centered on the local grid square; following
+        // the satellite subpoint here would override that centering on every
+        // track update, so skip the tracking animation entirely.
+        if (uiState.isGridMode) return@LaunchedEffect
         val firstPos = uiState.track?.firstOrNull()?.firstOrNull() ?: return@LaunchedEffect
         mapView.controller.animateTo(GeoPoint(firstPos.latitude, firstPos.longitude))
     }
     Column(modifier = Modifier.layoutPadding(), verticalArrangement = Arrangement.spacedBy(6.dp)) {
         val isVertical = isVerticalLayout()
-        if (isVertical) {
+        if (isGridMode) {
+            // Grid mode: replace the satellite-selection top bar with the
+            // award filter chips (All / DXCC / VUCC / WAPC / WAJA / WAZ / WAS).
+            AwardChipsRow(
+                progress = awardProgress,
+                selected = selectedAward,
+                onSelect = { selectedAward = it }
+            )
+        } else if (isVertical) {
             TopBar {
                 IconCard(action = { onAction(MapAction.SelectPrev) }, resId = R.drawable.ic_arrow, modifier = rotateMod)
                 TimerRow(timeString = timeString, isTimeAos = isTimeAos)
@@ -158,24 +234,211 @@ private fun MapScreen(uiState: MapState, onAction: (MapAction) -> Unit, mapView:
         }
         ElevatedCard(modifier = Modifier.weight(1f)) {
             Box(contentAlignment = Alignment.BottomCenter) {
+                // Track grid-mode transitions; initial value false so that entering
+                // the map page with grid mode already ON also centers the map.
+                var prevGridMode by remember { mutableStateOf(false) }
                 AndroidView({ mapView }) { view ->
-                    uiState.stationPosition?.let { setStationPosition(it, view) }
-                    uiState.track?.let { setSatelliteTrack(it, view) }
-                    uiState.footprint?.let { setFootprint(it, view) }
-                    uiState.positions?.let { setPositions(it, view) { item -> onAction(MapAction.SelectItem(item)) } }
-                    setTerminator(uiState.sunLatDeg, uiState.sunLonDeg, view)
-                    setSubSolarPoint(uiState.sunLatDeg, uiState.sunLonDeg, view)
-                    setMoonPosition(uiState.moonLatDeg, uiState.moonLonDeg, view)
+                    // Award filter mode: show the selected award's regions with
+                    // worked ones filled green; hide satellite layers like grid mode.
+                    val awardMode = selectedAward?.takeIf { it != AwardType.VUCC }
+                    if (uiState.isGridMode && awardMode != null) {
+                        setAwardMode(
+                            awardMode,
+                            awardProgress.firstOrNull { it.type == awardMode }?.workedKeys.orEmpty(),
+                            view
+                        )
+                        prevGridMode = uiState.isGridMode
+                    } else {
+                        // Center on the station grid whenever entering grid mode.
+                        // Only mark the transition as consumed once a real position
+                        // was available; otherwise a first frame with a null
+                        // stationPosition would swallow the centering forever.
+                        val shouldCenter = uiState.isGridMode && !prevGridMode
+                        setGridMode(
+                            uiState.isGridMode, uiState.workedGrids, uiState.roamedGrids, view,
+                            uiState.stationPosition,
+                            centerOnStation = shouldCenter
+                        )
+                        if (!shouldCenter || uiState.stationPosition != null) {
+                            prevGridMode = uiState.isGridMode
+                        }
+                    }
+                    if (!uiState.isGridMode) {
+                        uiState.stationPosition?.let { setStationPosition(it, view) }
+                        uiState.track?.let { setSatelliteTrack(it, view) }
+                        uiState.footprint?.let { setFootprint(it, view) }
+                        uiState.positions?.let { setPositions(it, view) { item -> onAction(MapAction.SelectItem(item)) } }
+                        setTerminator(uiState.sunLatDeg, uiState.sunLonDeg, view)
+                        setSubSolarPoint(uiState.sunLatDeg, uiState.sunLonDeg, view)
+                        setMoonPosition(uiState.moonLatDeg, uiState.moonLonDeg, view)
+                    }
                     view.invalidate()
                 }
                 uiState.mapData?.let { mapData ->
-                    if (isVertical) MapDataCard(mapData) else MapDataCards(mapData)
+                    if (!uiState.isGridMode) {
+                        if (isVertical) MapDataCard(mapData) else MapDataCards(mapData)
+                    }
+                }
+                GridModeToggle(
+                    isGridMode = uiState.isGridMode,
+                    onToggle = { onAction(MapAction.ToggleGridMode(it)) },
+                    modifier = Modifier
+                        .align(Alignment.TopEnd)
+                        .padding(8.dp)
+                )
+            }
+        }
+    }
+    // Centered dialog listing the tapped worked grid's confirmed satellite QSOs.
+    // Dismissed by tapping outside (no explicit close button).
+    selectedGrid?.let { grid ->
+        WorkedGridQsoDialog(
+            grid = grid,
+            qsos = uiState.workedGridQsos[grid].orEmpty().sortedBy { it.epochMs },
+            isUtc = uiState.isUtc,
+            onDismiss = { selectedGrid = null }
+        )
+    }
+}
+
+// region Worked-grid QSO dialog
+
+@Composable
+private fun WorkedGridQsoDialog(
+    grid: String,
+    qsos: List<com.rtbishop.look4sat.core.domain.model.GridQso>,
+    isUtc: Boolean,
+    onDismiss: () -> Unit
+) {
+    androidx.compose.ui.window.Dialog(onDismissRequest = onDismiss) {
+        // Centered card, ~85% width, internal scroll for long lists.
+        Card(
+            colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surfaceContainerLow),
+            modifier = Modifier.fillMaxWidth(0.88f)
+        ) {
+            Column {
+                // Header: grid + counts
+                Column(Modifier.padding(horizontal = 16.dp, vertical = 10.dp)) {
+                    Text(
+                        text = grid,
+                        style = MaterialTheme.typography.titleLarge,
+                        color = MaterialTheme.colorScheme.primary,
+                        fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace
+                    )
+                    val distinctCalls = qsos.map { it.call }.distinct().size
+                    Text(
+                        text = stringResource(R.string.grid_qso_calls_count, distinctCalls, qsos.size),
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                    )
+                }
+                androidx.compose.material3.HorizontalDivider()
+                if (qsos.isEmpty()) {
+                    Text(
+                        text = stringResource(R.string.grid_qso_no_sat),
+                        style = MaterialTheme.typography.bodySmall,
+                        modifier = Modifier.padding(16.dp)
+                    )
+                } else {
+                    // Group by callsign preserving first-contact order (list is
+                    // already sorted oldest-first); expandable rows.
+                    val grouped = remember(qsos) {
+                        qsos.groupBy { it.call }.entries.sortedBy { it.value.first().epochMs }
+                    }
+                    Column(
+                        Modifier
+                            .heightIn(max = 380.dp)
+                            .verticalScroll(rememberScrollState())
+                    ) {
+                        grouped.forEach { (call, callQsos) ->
+                            WorkedGridCallRow(call, callQsos = callQsos, isUtc = isUtc)
+                            androidx.compose.material3.HorizontalDivider(color = MaterialTheme.colorScheme.outlineVariant.copy(alpha = 0.3f))
+                        }
+                    }
                 }
             }
         }
     }
 }
 
+@Composable
+private fun WorkedGridCallRow(
+    call: String,
+    callQsos: List<com.rtbishop.look4sat.core.domain.model.GridQso>,
+    isUtc: Boolean,
+) {
+    var expanded by remember { mutableStateOf(false) }
+    val first = callQsos.first()
+    Column(Modifier.fillMaxWidth().padding(horizontal = 16.dp, vertical = 8.dp)) {
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier
+                .fillMaxWidth()
+                .clickable { expanded = !expanded }
+        ) {
+            Text(
+                text = call,
+                style = MaterialTheme.typography.titleMedium,
+                fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
+                color = MaterialTheme.colorScheme.tertiary,
+                modifier = Modifier.weight(1f)
+            )
+            Text(
+                text = formatDate(first.epochMs, isUtc),
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant
+            )
+            Text(
+                text = if (expanded) " ▴" else " ▾",
+                fontSize = 18.sp,
+                color = MaterialTheme.colorScheme.primary
+            )
+        }
+        // First-QSO summary line, always visible.
+        Text(
+            text = stringResource(R.string.grid_qso_first) + " · " + qsoSummary(first, isUtc),
+            style = MaterialTheme.typography.bodySmall,
+            modifier = Modifier.padding(top = 3.dp)
+        )
+        // Subsequent QSOs in this grid, revealed on expand. No ordinal prefix;
+        // each line carries its own date (the first QSO's date already sits in
+        // the header row).
+        if (expanded && callQsos.size > 1) {
+            callQsos.drop(1).forEach { qso ->
+                Text(
+                    text = formatDate(qso.epochMs, isUtc) + " · " + qsoSummary(qso, isUtc),
+                    style = MaterialTheme.typography.bodySmall,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    modifier = Modifier.padding(top = 3.dp)
+                )
+            }
+        }
+    }
+}
+
+private fun qsoSummary(qso: com.rtbishop.look4sat.core.domain.model.GridQso, isUtc: Boolean): String {
+    val sat = qso.satName.ifBlank { "?" }
+    val mode = qso.mode.ifBlank { "?" }
+    val band = qso.bandLabel
+    val time = formatTime(qso.epochMs, isUtc)
+    return listOf(sat, mode, band, time).filter { it.isNotBlank() }.joinToString(" · ")
+}
+
+private fun formatDate(epochMs: Long, isUtc: Boolean): String {
+    if (epochMs <= 0L) return "--"
+    val zone = if (isUtc) java.time.ZoneOffset.UTC else java.time.ZoneId.systemDefault()
+    return java.time.Instant.ofEpochMilli(epochMs).atZone(zone)
+        .format(java.time.format.DateTimeFormatter.ofPattern("yyyy-MM-dd"))
+}
+
+private fun formatTime(epochMs: Long, isUtc: Boolean): String {
+    if (epochMs <= 0L) return "--:--"
+    val zone = if (isUtc) java.time.ZoneOffset.UTC else java.time.ZoneId.systemDefault()
+    return java.time.Instant.ofEpochMilli(epochMs).atZone(zone)
+        .format(java.time.format.DateTimeFormatter.ofPattern(if (isUtc) "HH:mm'Z'" else "HH:mm"))
+}
+// endregion
+
 // region Map data composables
 @Composable
 private fun MapDataCard(data: MapData) {
@@ -233,7 +496,8 @@ private fun MapDataCards(data: MapData) {
                 Text(text = stringResource(R.string.map_elevation, data.elevation))
             }
         }
-        Card(colors = cardColors, modifier = Modifier.align(Alignment.TopEnd)) {
+        // Top-end card is offset down to make room for the grid-mode toggle pill.
+        Card(colors = cardColors, modifier = Modifier.align(Alignment.TopEnd).padding(top = 60.dp)) {
             Column(horizontalAlignment = Alignment.End, modifier = paddingMod) {
                 Text(text = stringResource(R.string.map_altitude, data.altitude), color = textColor)
                 Text(text = stringResource(R.string.map_distance, data.range))
@@ -260,7 +524,195 @@ private fun MapDataCards(data: MapData) {
 }
 // endregion
 
+// region Grid mode toggle pill
+
+/**
+ * Award filter chips row shown in grid mode (replaces the satellite-selection
+ * top bar). "All" = plain worked-grid view; each award chip carries its live
+ * progress (count/target) and selecting it switches the map to the award's
+ * boundary view.
+ */
+@Composable
+private fun AwardChipsRow(
+    progress: List<AwardProgress>,
+    selected: AwardType?,
+    onSelect: (AwardType?) -> Unit
+) {
+    LazyRow(
+        horizontalArrangement = Arrangement.spacedBy(6.dp),
+        modifier = Modifier.fillMaxWidth()
+    ) {
+        // No "All" chip: it was redundant with VUCC — both show the plain
+        // worked-grid map (VUCC never enters the boundary-overlay mode).
+        items(progress) { p ->
+            FilterChip(
+                selected = selected == p.type,
+                onClick = { onSelect(p.type) },
+                label = {
+                    Text(
+                        text = "${p.type.name} ${p.count}/${p.target}",
+                        fontSize = 12.sp
+                    )
+                },
+                colors = FilterChipDefaults.filterChipColors()
+            )
+        }
+    }
+}
+
+/**
+ * Compact pill toggle for switching between satellite view and grid mode,
+ * floated over the map's top-right corner. The label reflects the active
+ * mode ("Grid mode" when ON, "Satellite mode" when OFF). Semi-transparent
+ * background keeps the map readable underneath.
+ */
+@Composable
+private fun GridModeToggle(
+    isGridMode: Boolean,
+    onToggle: (Boolean) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Surface(
+        color = ComposeColor.Black.copy(alpha = 0.45f),
+        shape = RoundedCornerShape(percent = 50),
+        modifier = modifier
+    ) {
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier.padding(start = 12.dp, end = 6.dp, top = 2.dp, bottom = 2.dp)
+        ) {
+            Text(
+                text = stringResource(
+                    if (isGridMode) R.string.map_grid_mode else R.string.map_satellite_mode
+                ),
+                color = ComposeColor.White,
+                fontSize = 12.sp,
+                modifier = Modifier.padding(end = 2.dp)
+            )
+            Switch(
+                checked = isGridMode,
+                onCheckedChange = onToggle,
+                modifier = Modifier.scale(0.75f)
+            )
+        }
+    }
+}
+
+// endregion
+
 // region Map overlay helpers
+
+/**
+ * Switches the grid-slot overlay to the award boundary view for the given
+ * award: loads the boundary asset once (cached), paints worked regions green.
+ * Satellite-related layers are hidden exactly like grid mode. VUCC keeps the
+ * plain Maidenhead grid overlay (the grid view IS the VUCC view).
+ */
+private fun setAwardMode(award: AwardType, workedCodes: Set<String>, mapView: MapView) {
+    val asset = when (award) {
+        AwardType.WAPC -> AwardBoundaryData.AwardAsset.WAPC
+        AwardType.WAJA -> AwardBoundaryData.AwardAsset.WAJA
+        AwardType.WAZ -> AwardBoundaryData.AwardAsset.WAZ
+        AwardType.WAS -> AwardBoundaryData.AwardAsset.WAS
+        AwardType.DXCC -> AwardBoundaryData.AwardAsset.DXCC
+        AwardType.VUCC -> return
+    }
+    val overlay = mapView.overlays.getOrNull(OVERLAY_GRID)
+    if (overlay is AwardBoundaryOverlay) {
+        overlay.isEnabled = true
+        overlay.regions = AwardBoundaryData.load(mapView.context, asset)
+        overlay.workedCodes = workedCodes
+    } else {
+        mapView.overlays[OVERLAY_GRID] = AwardBoundaryOverlay().apply {
+            isEnabled = true
+            regions = AwardBoundaryData.load(mapView.context, asset)
+            this.workedCodes = workedCodes
+        }
+    }
+    for (index in OVERLAY_STATION..OVERLAY_MOON) {
+        mapView.overlays.getOrNull(index)?.isEnabled = false
+    }
+}
+
+/** Toggle the grid-mode layer visibility on/off without recreating any overlay. */
+private fun setGridMode(
+    gridMode: Boolean,
+    workedGrids: Set<String>,
+    roamedGrids: Set<String>,
+    mapView: MapView,
+    stationPosition: GeoPos?,
+    centerOnStation: Boolean = false
+) {
+    try {
+        val gridOverlay = mapView.overlays[OVERLAY_GRID]
+        if (gridOverlay is MaidenheadGridOverlay) {
+            gridOverlay.isEnabled = gridMode
+            gridOverlay.workedGrids = workedGrids
+            gridOverlay.roamedGrids = roamedGrids
+            // ownGrid must be set on EVERY update — the position is available
+            // regardless of whether this frame centers (centering happens only
+            // on entry, but passing null here would wipe the bold outline).
+            gridOverlay.ownGrid = ownGridOf(stationPosition)
+        } else {
+            mapView.overlays[OVERLAY_GRID] = MaidenheadGridOverlay().apply {
+                isEnabled = gridMode
+                this.workedGrids = workedGrids
+                this.roamedGrids = roamedGrids
+                this.ownGrid = ownGridOf(stationPosition)
+            }
+        }
+        // Satellite-related layers are hidden in grid mode; the grid overlay
+        // itself is controlled by its own enabled flag.
+        for (index in OVERLAY_STATION..OVERLAY_MOON) {
+            mapView.overlays.getOrNull(index)?.isEnabled = !gridMode
+        }
+        // Entering grid mode: center on the station's current grid square,
+        // keeping the current zoom level unchanged. post{} is essential: on the
+        // first composition this runs before MapView's first layout, and a
+        // setCenter issued pre-layout is discarded when the view lays out —
+        // the map then keeps its default center forever.
+        if (gridMode && centerOnStation) {
+            val pos = stationPosition ?: return
+            val lat = pos.latitude
+            val lon = pos.longitude
+            // Maidenhead field indices: field 0 spans -90..-80° lat and
+            // -180..-160° lon, so the field-center must be offset by those
+            // bases — omitting them maps e.g. OL62's field center to
+            // 115°N/290°E (an ocean a hemisphere away) instead of 25°N/110°E.
+            val fieldLat = ((lat + 90.0) / 10.0).toInt().coerceIn(0, 17)
+            val fieldLon = ((lon + 180.0) / 20.0).toInt().coerceIn(0, 17)
+            val centerLat = fieldLat * 10.0 + 5.0 - 90.0
+            val centerLon = fieldLon * 20.0 + 10.0 - 180.0
+            mapView.post { mapView.controller.setCenter(GeoPoint(centerLat, centerLon)) }
+        }
+    } catch (e: Exception) {
+        println(e)
+    }
+}
+
+/** The station's 4-char Maidenhead gridsquare, e.g. "OL62", or null without a position. */
+private fun ownGridOf(stationPosition: GeoPos?): String? {
+    val pos = stationPosition ?: return null
+    val lat = pos.latitude
+    val lon = pos.longitude
+    val fieldLat = ((lat + 90.0) / 10.0).toInt().coerceIn(0, 17)
+    val fieldLon = ((lon + 180.0) / 20.0).toInt().coerceIn(0, 17)
+    val subLat = ((lat + 90.0) % 10.0).toInt()
+    val subLon = ((lon + 180.0) % 20.0 / 2.0).toInt()
+    return "${'A' + fieldLon}${'A' + fieldLat}$subLon$subLat"
+}
+
+/** The 4-char Maidenhead gridsquare containing the given point, or null outside the grid. */
+private fun gridOfPoint(latitude: Double, longitude: Double): String? {
+    if (latitude < -90.0 || latitude >= 90.0) return null
+    val lon = ((longitude + 180.0) % 360.0 + 360.0) % 360.0 - 180.0
+    val fieldLat = ((latitude + 90.0) / 10.0).toInt().coerceIn(0, 17)
+    val fieldLon = ((lon + 180.0) / 20.0).toInt().coerceIn(0, 17)
+    val subLat = ((latitude + 90.0) % 10.0).toInt()
+    val subLon = ((lon + 180.0) % 20.0 / 2.0).toInt()
+    return "${'A' + fieldLon}${'A' + fieldLat}$subLon$subLat"
+}
+
 private fun setStationPosition(stationPos: GeoPos, mapView: MapView) {
     try {
         val overlay = mapView.overlays[OVERLAY_STATION]
@@ -489,6 +941,11 @@ private fun rememberMapViewWithLifecycle(): MapView {
         MapView(context).apply {
             setMultiTouchControls(true)
             setUseDataConnection(false)
+            // Vertical map repetition wraps points below the viewport up to the
+            // top edge (osmdroid Y-wrap). Antarctica's full-circle ring then
+            // draws a full-height artifact line whenever its X range crosses
+            // the screen at low zoom. The map must never repeat vertically.
+            setVerticalMapRepetitionEnabled(false)
             setTileSource(tileSource)
             minZoomLevel = getMinZoom(resources.displayMetrics.heightPixels, isVertical)
             maxZoomLevel = 7.0
@@ -500,6 +957,7 @@ private fun rememberMapViewWithLifecycle(): MapView {
             overlayManager.tilesOverlay.setColorFilter(createColorFilter())
             setScrollableAreaLimitLatitude(maxLat, minLat, 0)
             overlays.addAll(Array(OVERLAY_COUNT) { FolderOverlay() })
+            overlays[OVERLAY_GRID] = MaidenheadGridOverlay()
         }
     }
     val lifecycleObserver = rememberMapViewLifecycleObserver(mapView)

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

@@ -26,6 +26,11 @@ data class MapState(
     val mapData: MapData? = null,
     val isLightUi: Boolean = false,
     val isUtc: Boolean = false,
+    val isGridMode: Boolean = false,
+    val workedGrids: Set<String> = emptySet(),
+    val workedGridQsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>> = emptyMap(),
+    /** 4-char gridsquares the station operated from (LoTW MY_GRIDSQUARE) — blue stripes. */
+    val roamedGrids: Set<String> = emptySet(),
     val stationPosition: GeoPos? = null,
     val orbitalPass: OrbitalPass,
     val track: List<List<GeoPos>>? = null,
@@ -42,6 +47,7 @@ sealed interface MapAction {
     data object SelectNext : MapAction
     data class SelectItem(val item: OrbitalObject) : MapAction
     data class SelectDefaultItem(val catnum: Int) : MapAction
+    data class ToggleGridMode(val value: Boolean) : MapAction
 }
 
 data class MapData(

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

@@ -74,11 +74,23 @@ class MapViewModel(
     init {
         viewModelScope.launch {
             settingsRepo.otherSettings.collectLatest { settings ->
-                _uiState.update { it.copy(isUtc = settings.stateOfUtc) }
+                _uiState.update { it.copy(isUtc = settings.stateOfUtc, isGridMode = settings.stateOfMapGrid) }
+            }
+        }
+        viewModelScope.launch {
+            settingsRepo.wavelogSettings.collectLatest { _ ->
+                _uiState.update {
+                    it.copy(
+                        workedGrids = settingsRepo.getWorkedGrids(),
+                        workedGridQsos = settingsRepo.getWorkedGridQsos(),
+                        roamedGrids = settingsRepo.getRoamedGrids()
+                    )
+                }
             }
         }
         val (selectedCatNum, _) = satelliteRepo.selectedPass.value
         selectDefaultSatellite(if (selectedCatNum != 0) selectedCatNum else -1)
+        getStationPosition()
     }
 
     fun onAction(action: MapAction) {
@@ -87,6 +99,7 @@ class MapViewModel(
             MapAction.SelectNext -> scrollSelection(false)
             is MapAction.SelectItem -> selectSatellite(action.item)
             is MapAction.SelectDefaultItem -> selectDefaultSatellite(action.catnum)
+            is MapAction.ToggleGridMode -> settingsRepo.updateOtherSettings { it.copy(stateOfMapGrid = action.value) }
         }
     }
 

feature/mutual/src/main/java/com/rtbishop/look4sat/feature/mutual/MutualScreen.kt

@@ -63,6 +63,7 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.rtbishop.look4sat.core.domain.repository.MutualPassData
 import com.rtbishop.look4sat.core.domain.repository.TrackSampleData
+import com.rtbishop.look4sat.core.presentation.GridTargetChip
 import com.rtbishop.look4sat.core.presentation.R
 import com.rtbishop.look4sat.core.presentation.ScreenColumn
 import com.rtbishop.look4sat.core.presentation.TopBar
@@ -88,7 +89,8 @@ fun MutualScreen(
                     Text(
                         text = stringResource(R.string.mutual_title),
                         style = MaterialTheme.typography.titleMedium,
-                        fontWeight = FontWeight.Bold
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(start = 12.dp)
                     )
                 },
                 bottomInfo = {
@@ -98,7 +100,9 @@ fun MutualScreen(
                         color = MaterialTheme.colorScheme.onSurfaceVariant,
                         maxLines = 1,
                         overflow = TextOverflow.Ellipsis,
-                        modifier = Modifier.weight(1f)
+                        modifier = Modifier
+                            .weight(1f)
+                            .padding(start = 12.dp)
                     )
                 },
                 endAction = {
@@ -114,7 +118,29 @@ fun MutualScreen(
                                 strokeWidth = 2.dp
                             )
                         }
-                        MutualStatusChip(state)
+                        // Target-grid chip: station B grid (station A defaults to
+                        // the user's own position), bearing/distance from A to B.
+                        val gridB = state.stationBGrid.trim().uppercase()
+                        val posA = com.rtbishop.look4sat.core.domain.utility.qthToPosition(state.stationAGrid)
+                            ?: state.stationALat.toDoubleOrNull()?.let { lat ->
+                                state.stationALon.toDoubleOrNull()?.let { lon ->
+                                    com.rtbishop.look4sat.core.domain.predict.GeoPos(lat, lon)
+                                }
+                            }
+                        val posB = com.rtbishop.look4sat.core.domain.utility.qthToPosition(gridB)
+                        if (posA != null && posB != null) {
+                            GridTargetChip(
+                                grid = gridB,
+                                distanceKm = com.rtbishop.look4sat.core.presentation.greatCircleDistanceKm(
+                                    posA.latitude, posA.longitude, posB.latitude, posB.longitude
+                                ),
+                                bearingDeg = com.rtbishop.look4sat.core.presentation.greatCircleBearingDeg(
+                                    posA.latitude, posA.longitude, posB.latitude, posB.longitude
+                                )
+                            )
+                        } else {
+                            GridTargetChip(grid = null, distanceKm = null, bearingDeg = null)
+                        }
                     }
                 }
             )

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

@@ -85,22 +85,20 @@ import java.util.TimeZone
 
 @Composable
 fun PassesDestination(
-    navigateToRadar: (Int, Long) -> Unit,
-    navigateToMap: () -> Unit
+    navigateToRadar: (Int, Long) -> Unit
 ) {
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
     val viewModel: PassesViewModel = viewModel(factory = PassesViewModel.factory(container))
     val uiState = viewModel.uiState.collectAsStateWithLifecycle().value
-    PassesScreen(uiState, viewModel::onAction, navigateToRadar, navigateToMap)
+    PassesScreen(uiState, viewModel::onAction, navigateToRadar)
 }
 
 @Composable
 private fun PassesScreen(
     uiState: PassesState,
     onAction: (PassesAction) -> Unit,
-    navigateToRadar: (Int, Long) -> Unit,
-    navigateToMap: () -> Unit
+    navigateToRadar: (Int, Long) -> Unit
 ) {
     if (uiState.isPassesDialogShown) {
         PassesFilterDialog(
@@ -158,7 +156,7 @@ private fun PassesScreen(
             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)
@@ -167,7 +165,7 @@ private fun PassesScreen(
                     NextPassRow(pass = uiState.nextPass, isUtc = uiState.isUtc)
                 },
                 endAction = {
-                    IconCard(action = navigateToMap, resId = R.drawable.ic_map)
+                    IconCard(action = { onAction(PassesAction.TogglePassesDialog) }, resId = R.drawable.ic_filter)
                 }
             )
         }

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

@@ -84,7 +84,7 @@ private enum class RadarPage(val title: String) {
 }
 
 @Composable
-fun RadarDestination(navigateUp: () -> Unit, navigateToMap: () -> Unit) {
+fun RadarDestination(navigateUp: () -> Unit) {
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
     val viewModel: RadarViewModel = viewModel(factory = RadarViewModel.factory(container))
@@ -96,12 +96,6 @@ fun RadarDestination(navigateUp: () -> Unit, navigateToMap: () -> Unit) {
         }
         navigateUp()
     }
-    val navigateToMapAndClearMutual = {
-        if (container.mutualPassData.value.endTime > 0L) {
-            container.setMutualPassData(MutualPassData())
-        }
-        navigateToMap()
-    }
     LaunchedEffect(mutualData.endTime) {
         if (mutualData.endTime <= 0L) return@LaunchedEffect
         while (true) {
@@ -127,7 +121,7 @@ fun RadarDestination(navigateUp: () -> Unit, navigateToMap: () -> Unit) {
         viewModel.onAction(RadarAction.SstvPermissionResult(granted))
         viewModel.onAction(RadarAction.CwPermissionResult(granted))
     }
-    RadarScreen(uiState, viewModel::onAction, navigateUpAndClearMutual, navigateToMapAndClearMutual, mutualData, requestMicPermission = {
+    RadarScreen(uiState, viewModel::onAction, navigateUpAndClearMutual, mutualData, requestMicPermission = {
         permissionLauncher.launch(Manifest.permission.RECORD_AUDIO)
     })
 }
@@ -137,11 +131,14 @@ private fun RadarScreen(
     uiState: RadarState,
     onAction: (RadarAction) -> Unit,
     navigateUp: () -> Unit,
-    navigateToMap: () -> Unit,
     mutualData: MutualPassData,
     requestMicPermission: () -> Unit
 ) {
     val upcomingPass = uiState.currentPass ?: getDefaultPass()
+    // 日程功能: 把当前过境写入系统日历(原仓库的 addToCalendar, ic_calendar 按钮)
+    val addToCalendar: () -> Unit = {
+        uiState.currentPass?.let { onAction(RadarAction.AddToCalendar(it.name, it.aosTime, it.losTime)) }
+    }
     // Station-B overlay: full track line (only where B's elevation > 0) + live position dot
     // at the current moment, same display mode as the local station.
     val trackB = remember(mutualData.trackSamples) {
@@ -177,7 +174,7 @@ private fun RadarScreen(
             TopBar {
                 IconCard(action = navigateUp, resId = R.drawable.ic_back)
                 TimerRow(timeString = uiState.currentTime, isTimeAos = uiState.isTimeAos)
-                IconCard(action = navigateToMap, resId = R.drawable.ic_map)
+                IconCard(action = addToCalendar, resId = R.drawable.ic_calendar)
             }
             TopBar { NextPassRow(pass = upcomingPass, isUtc = uiState.isUtc) }
         } else {
@@ -185,7 +182,7 @@ private fun RadarScreen(
                 IconCard(action = navigateUp, resId = R.drawable.ic_back)
                 TimerRow(timeString = uiState.currentTime, isTimeAos = uiState.isTimeAos)
                 NextPassRow(pass = upcomingPass, modifier = Modifier.weight(1f), isUtc = uiState.isUtc)
-                IconCard(action = navigateToMap, resId = R.drawable.ic_map)
+                IconCard(action = addToCalendar, resId = R.drawable.ic_calendar)
             }
         }
         if (isVertical) {

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

@@ -48,6 +48,8 @@ import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material3.Button
 import androidx.compose.material3.FilterChip
@@ -78,6 +80,7 @@ import androidx.compose.ui.draw.rotate
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.TextStyle
@@ -123,7 +126,21 @@ fun TransceiversPage(
                 }
             }
         }
-        LazyColumn(modifier = modifier.fillMaxSize(), state = listState) {
+        // contentPadding for the system navigation bar: the radar page is a
+        // full-screen destination, so on gesture-nav devices the translucent
+        // nav bar floats over the list bottom and covers the CW decoder's
+        // decoded-text output when the panel is scrolled to the end. Padding
+        // the last item above the bar fixes it (three-button nav already
+        // resizes the window, where this padding is a harmless no-op).
+        LazyColumn(
+            modifier = modifier.fillMaxSize(),
+            state = listState,
+            contentPadding = PaddingValues(
+                bottom = with(LocalDensity.current) {
+                    (WindowInsets.navigationBars.getBottom(this) / density).dp
+                }
+            )
+        ) {
             itemsIndexed(items = transceivers, key = { _, radio -> radio.uuid }) { _, radio ->
                 val isExpanded = radio.uuid == selectedUuid
                 TransceiverItem(

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

@@ -51,6 +51,7 @@ import androidx.compose.material3.FilterChip
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.TextButton
 import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
@@ -155,6 +156,136 @@ fun LocatorDialog(qthLocator: String, dismiss: () -> Unit, save: (String) -> Uni
     }
 }
 
+@Composable
+fun WavelogDialog(
+    initialSettings: com.rtbishop.look4sat.core.domain.model.WavelogSettings,
+    workedGridsCount: Int,
+    isSyncing: Boolean,
+    message: String?,
+    dismiss: () -> Unit,
+    onSave: (com.rtbishop.look4sat.core.domain.model.WavelogSettings) -> Unit,
+    onSync: (com.rtbishop.look4sat.core.domain.model.WavelogSettings) -> Unit
+) {
+    val url = rememberSaveable { mutableStateOf(initialSettings.url) }
+    val token = rememberSaveable { mutableStateOf(initialSettings.token) }
+    SharedDialog(
+        title = stringResource(R.string.prefs_wavelog_title),
+        onCancel = dismiss,
+        onAccept = {
+            onSave(com.rtbishop.look4sat.core.domain.model.WavelogSettings(url.value, token.value))
+            dismiss()
+        }
+    ) {
+        OutlinedTextField(
+            value = url.value,
+            onValueChange = { url.value = it },
+            label = { Text(text = stringResource(id = R.string.prefs_wavelog_url)) },
+            placeholder = { Text(text = "http://192.168.1.10") },
+            singleLine = true,
+            modifier = Modifier.fillMaxWidth().padding(horizontal = LocalSpacing.current.large),
+        )
+        OutlinedTextField(
+            value = token.value,
+            onValueChange = { token.value = it },
+            label = { Text(text = stringResource(id = R.string.prefs_wavelog_token)) },
+            placeholder = { Text(text = "abcdef123456:1") },
+            singleLine = true,
+            modifier = Modifier.fillMaxWidth().padding(horizontal = LocalSpacing.current.large),
+        )
+        Text(
+            text = stringResource(R.string.prefs_wavelog_hint, workedGridsCount),
+            style = MaterialTheme.typography.bodySmall,
+            modifier = Modifier.padding(horizontal = LocalSpacing.current.large)
+        )
+        if (message != null) {
+            Text(
+                text = message,
+                color = MaterialTheme.colorScheme.error,
+                style = MaterialTheme.typography.bodySmall,
+                modifier = Modifier.padding(horizontal = LocalSpacing.current.large)
+            )
+        }
+        // Sync uses the values typed in the fields directly — saving and syncing
+        // happen in one step, no need to close and reopen the dialog.
+        Row(
+            horizontalArrangement = Arrangement.End,
+            modifier = Modifier.fillMaxWidth().padding(horizontal = LocalSpacing.current.large)
+        ) {
+            TextButton(
+                onClick = { onSync(com.rtbishop.look4sat.core.domain.model.WavelogSettings(url.value, token.value)) },
+                enabled = !isSyncing
+            ) {
+                Text(text = if (isSyncing) stringResource(R.string.prefs_wavelog_syncing)
+                else stringResource(R.string.prefs_wavelog_sync))
+            }
+        }
+        Spacer(modifier = Modifier.height(0.dp))
+    }
+}
+
+@Composable
+fun LoTWDialog(
+    initialSettings: com.rtbishop.look4sat.core.domain.model.LoTWSettings,
+    workedGridsCount: Int,
+    isSyncing: Boolean,
+    message: String?,
+    dismiss: () -> Unit,
+    onSave: (com.rtbishop.look4sat.core.domain.model.LoTWSettings) -> Unit,
+    onSync: (com.rtbishop.look4sat.core.domain.model.LoTWSettings) -> Unit
+) {
+    val call = rememberSaveable { mutableStateOf(initialSettings.callsign) }
+    val pass = rememberSaveable { mutableStateOf(initialSettings.password) }
+    SharedDialog(
+        title = stringResource(R.string.prefs_lotw_title),
+        onCancel = dismiss,
+        // The confirm button IS the sync action: saving credentials and
+        // fetching confirmed grids happen in one step.
+        onAccept = {
+            onSync(com.rtbishop.look4sat.core.domain.model.LoTWSettings(call.value, pass.value))
+        },
+        acceptText = stringResource(if (isSyncing) R.string.prefs_lotw_syncing else R.string.prefs_lotw_sync),
+        acceptEnabled = !isSyncing
+    ) {
+        OutlinedTextField(
+            value = call.value,
+            onValueChange = { call.value = it.uppercase() },
+            label = { Text(text = stringResource(id = R.string.prefs_lotw_callsign)) },
+            placeholder = { Text(text = "BA7OPF") },
+            singleLine = true,
+            modifier = Modifier.fillMaxWidth().padding(horizontal = LocalSpacing.current.large),
+        )
+        OutlinedTextField(
+            value = pass.value,
+            onValueChange = { pass.value = it },
+            label = { Text(text = stringResource(id = R.string.prefs_lotw_password)) },
+            placeholder = { Text(text = "********") },
+            visualTransformation = androidx.compose.ui.text.input.PasswordVisualTransformation(),
+            singleLine = true,
+            modifier = Modifier.fillMaxWidth().padding(horizontal = LocalSpacing.current.large),
+        )
+        Text(
+            text = stringResource(R.string.prefs_lotw_hint, workedGridsCount),
+            style = MaterialTheme.typography.bodySmall,
+            modifier = Modifier.padding(horizontal = LocalSpacing.current.large)
+        )
+        Text(
+            text = stringResource(R.string.prefs_lotw_sync_duration_hint),
+            style = MaterialTheme.typography.bodySmall,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+            modifier = Modifier.padding(horizontal = LocalSpacing.current.large)
+        )
+        if (message != null) {
+            Text(
+                text = message,
+                color = MaterialTheme.colorScheme.error,
+                style = MaterialTheme.typography.bodySmall,
+                modifier = Modifier.padding(horizontal = LocalSpacing.current.large)
+            )
+        }
+        Spacer(modifier = Modifier.height(0.dp))
+    }
+}
+
 @Preview(showBackground = true)
 @Composable
 private fun TransceiversDialogPreview() {

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

@@ -63,6 +63,8 @@ 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.model.RadioControlSettings
+import com.rtbishop.look4sat.core.domain.model.WavelogSettings
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import com.rtbishop.look4sat.core.domain.repository.IContainerProvider
 import com.rtbishop.look4sat.core.presentation.CardButton
@@ -201,6 +203,17 @@ private fun SettingsScreen(uiState: SettingsState, onAction: (SettingsAction) ->
             onSave = { onAction(SettingsAction.UpdateRadioControl(it)) }
         )
     }
+    if (dialogs.lotw) {
+        LoTWDialog(
+            initialSettings = uiState.lotwSettings,
+            workedGridsCount = uiState.workedGridsCount,
+            isSyncing = uiState.lotwSyncing,
+            message = uiState.lotwMessage,
+            dismiss = { dialogs.lotw = false },
+            onSave = { onAction(SettingsAction.UpdateLoTW(it)) },
+            onSync = { onAction(SettingsAction.SyncLoTWGrids(it)) }
+        )
+    }
 
     // URLs for top bar
     val uriHandler = LocalUriHandler.current
@@ -305,6 +318,13 @@ private fun SettingsScreen(uiState: SettingsState, onAction: (SettingsAction) ->
                     onRadioControlClick = { dialogs.radioControl = true }
                 )
             }
+            item {
+                LoTWCard(
+                    settings = uiState.lotwSettings,
+                    workedGridsCount = uiState.workedGridsCount,
+                    showLoTWDialog = { dialogs.lotw = true }
+                )
+            }
             item { OtherCard(uiState.otherSettings, onAction) }
             item { CardCredits() }
             item(span = { GridItemSpan(maxLineSpan) }) {
@@ -489,6 +509,7 @@ private fun OtherCardPreview() = MainTheme {
         stateOfUtc = false,
         stateOfLightTheme = false,
         stateOfNightMode = false,
+        stateOfMapGrid = false,
         shouldSeeWarning = false,
         shouldSeeWhatsNew = false
     )
@@ -500,7 +521,7 @@ private fun OtherCard(settings: OtherSettings, onAction: (SettingsAction) -> Uni
     ElevatedCard(
         modifier = Modifier
             .fillMaxWidth()
-            .height(268.dp)
+            .height(312.dp)
     ) {
         Column(modifier = Modifier.padding(horizontal = 8.dp, vertical = 4.dp)) {
             Text(
@@ -522,6 +543,9 @@ private fun OtherCard(settings: OtherSettings, onAction: (SettingsAction) -> Uni
             SwitchRow(R.string.prefs_other_switch_night_mode, settings.stateOfNightMode) {
                 onAction(SettingsAction.ToggleNightMode(it))
             }
+            SwitchRow(R.string.prefs_other_switch_map_grid, settings.stateOfMapGrid) {
+                onAction(SettingsAction.ToggleMapGrid(it))
+            }
         }
     }
 }
@@ -538,6 +562,38 @@ private fun SwitchRow(labelResId: Int, checked: Boolean, onCheckedChange: (Boole
     }
 }
 
+@Composable
+private fun LoTWCard(
+    settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings,
+    workedGridsCount: Int,
+    showLoTWDialog: () -> Unit
+) {
+    ElevatedCard(modifier = Modifier.fillMaxWidth()) {
+        Column(modifier = Modifier.padding(horizontal = 8.dp, vertical = 4.dp)) {
+            Text(
+                text = stringResource(id = R.string.prefs_lotw_title),
+                color = MaterialTheme.colorScheme.primary
+            )
+            Spacer(modifier = Modifier.height(2.dp))
+            Text(
+                text = if (settings.isConfigured) {
+                    stringResource(R.string.prefs_lotw_configured, workedGridsCount)
+                } else {
+                    stringResource(R.string.prefs_lotw_not_configured)
+                },
+                style = MaterialTheme.typography.bodySmall,
+                maxLines = 2
+            )
+            Spacer(modifier = Modifier.height(4.dp))
+            CardButton(
+                onClick = showLoTWDialog,
+                text = stringResource(id = R.string.prefs_wavelog_configure),
+                modifier = Modifier.fillMaxWidth()
+            )
+        }
+    }
+}
+
 @Composable
 private fun formatUpdateTime(updateTime: Long): String {
     val timePattern = stringResource(id = R.string.prefs_updated_time)
@@ -657,6 +713,8 @@ private class DialogVisibility {
     var network by mutableStateOf(false)
     var bluetooth by mutableStateOf(false)
     var radioControl by mutableStateOf(false)
+    var wavelog by mutableStateOf(false)
+    var lotw by mutableStateOf(false)
 }
 
 @Composable
@@ -664,12 +722,13 @@ 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.wavelog, it.lotw)
             },
             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]; wavelog = it[6]
+                    lotw = it.getOrElse(7) { false }
                 }
             }
         )

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

@@ -22,6 +22,7 @@ import com.rtbishop.look4sat.core.domain.model.LatestRelease
 import com.rtbishop.look4sat.core.domain.model.OtherSettings
 import com.rtbishop.look4sat.core.domain.model.RCSettings
 import com.rtbishop.look4sat.core.domain.model.RadioControlSettings
+import com.rtbishop.look4sat.core.domain.model.WavelogSettings
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import java.io.File
 
@@ -54,6 +55,13 @@ data class SettingsState(
     val radioControlSettings: RadioControlSettings,
     val dataSourcesSettings: DataSourcesSettings,
     val dataSourcesStatus: Map<String, Int> = emptyMap(),
+    val wavelogSettings: WavelogSettings = WavelogSettings(),
+    val workedGridsCount: Int = 0,
+    val wavelogSyncing: Boolean = false,
+    val wavelogMessage: String? = null,
+    val lotwSettings: com.rtbishop.look4sat.core.domain.model.LoTWSettings = com.rtbishop.look4sat.core.domain.model.LoTWSettings(),
+    val lotwSyncing: Boolean = false,
+    val lotwMessage: String? = null,
     val updateChecker: UpdateCheckerState = UpdateCheckerState()
 )
 
@@ -77,6 +85,7 @@ sealed interface SettingsAction {
     data class ToggleSensor(val value: Boolean) : SettingsAction
     data class ToggleLightTheme(val value: Boolean) : SettingsAction
     data class ToggleNightMode(val value: Boolean) : SettingsAction
+    data class ToggleMapGrid(val value: Boolean) : SettingsAction
 
     // Remote control
     data class UpdateRC(val settings: RCSettings) : SettingsAction
@@ -85,6 +94,14 @@ sealed interface SettingsAction {
     // Data sources
     data class UpdateDataSources(val settings: DataSourcesSettings) : SettingsAction
 
+    // Wavelog worked grids
+    data class UpdateWavelog(val settings: WavelogSettings) : SettingsAction
+    data class SyncWorkedGrids(val settings: WavelogSettings) : SettingsAction
+
+    // LoTW confirmed grids
+    data class UpdateLoTW(val settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings) : SettingsAction
+    data class SyncLoTWGrids(val settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings) : SettingsAction
+
     // Update checker
     data object CheckForUpdate : SettingsAction
     data object DownloadUpdate : SettingsAction

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

@@ -23,9 +23,11 @@ import androidx.lifecycle.viewModelScope
 import androidx.lifecycle.viewmodel.initializer
 import androidx.lifecycle.viewmodel.viewModelFactory
 import com.rtbishop.look4sat.core.domain.repository.IDatabaseRepo
+import com.rtbishop.look4sat.core.domain.model.WavelogSettings
 import com.rtbishop.look4sat.core.domain.repository.IMainContainer
 import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
 import com.rtbishop.look4sat.core.domain.repository.IUpdateRepository
+import com.rtbishop.look4sat.core.domain.repository.IWavelogRepository
 import com.rtbishop.look4sat.core.domain.usecase.IShowToast
 import com.rtbishop.look4sat.core.domain.utility.VersionComparator
 import com.rtbishop.look4sat.core.presentation.R
@@ -39,6 +41,8 @@ class SettingsViewModel(
     private val databaseRepo: IDatabaseRepo,
     private val settingsRepo: ISettingsRepo,
     private val updateRepo: IUpdateRepository,
+    private val wavelogRepo: IWavelogRepository,
+    private val lotwRepo: com.rtbishop.look4sat.core.domain.repository.ILoTWRepository,
     private val apkFile: File,
     private val showToast: IShowToast
 ) : ViewModel() {
@@ -54,7 +58,9 @@ class SettingsViewModel(
             rcSettings = settingsRepo.rcSettings.value,
             radioControlSettings = settingsRepo.radioControlSettings.value,
             dataSourcesSettings = settingsRepo.dataSourcesSettings.value,
-            dataSourcesStatus = settingsRepo.dataSourcesStatus.value
+            dataSourcesStatus = settingsRepo.dataSourcesStatus.value,
+            wavelogSettings = settingsRepo.wavelogSettings.value,
+            workedGridsCount = settingsRepo.getWorkedGrids().size
         )
     )
 
@@ -107,6 +113,16 @@ class SettingsViewModel(
                 _uiState.update { it.copy(radioControlSettings = settings) }
             }
         }
+        viewModelScope.launch {
+            settingsRepo.wavelogSettings.collect { settings ->
+                _uiState.update { it.copy(wavelogSettings = settings) }
+            }
+        }
+        viewModelScope.launch {
+            settingsRepo.lotwSettings.collect { settings ->
+                _uiState.update { it.copy(lotwSettings = settings) }
+            }
+        }
     }
 
 
@@ -133,10 +149,17 @@ class SettingsViewModel(
             is SettingsAction.ToggleSensor -> settingsRepo.updateOtherSettings { it.copy(stateOfSensors = action.value) }
             is SettingsAction.ToggleLightTheme -> settingsRepo.updateOtherSettings { it.copy(stateOfLightTheme = action.value) }
             is SettingsAction.ToggleNightMode -> settingsRepo.updateOtherSettings { it.copy(stateOfNightMode = action.value) }
+            is SettingsAction.ToggleMapGrid -> settingsRepo.updateOtherSettings { it.copy(stateOfMapGrid = action.value) }
             // Remote control & data sources
             is SettingsAction.UpdateRC -> settingsRepo.updateRCSettings(action.settings)
             is SettingsAction.UpdateRadioControl -> settingsRepo.updateRadioControlSettings(action.settings)
             is SettingsAction.UpdateDataSources -> settingsRepo.updateDataSourcesSettings(action.settings)
+            // Wavelog worked grids
+            is SettingsAction.UpdateWavelog -> settingsRepo.updateWavelogSettings(action.settings)
+            is SettingsAction.SyncWorkedGrids -> syncWorkedGrids(action.settings)
+            // LoTW confirmed grids
+            is SettingsAction.UpdateLoTW -> settingsRepo.updateLoTWSettings(action.settings)
+            is SettingsAction.SyncLoTWGrids -> syncLoTWGrids(action.settings)
             // Update checker
             SettingsAction.CheckForUpdate -> checkForUpdate()
             SettingsAction.DownloadUpdate -> downloadUpdate()
@@ -146,6 +169,86 @@ class SettingsViewModel(
         }
     }
 
+    // region Wavelog worked grids
+
+    private fun syncWorkedGrids(settings: WavelogSettings) {
+        if (!settings.isConfigured) {
+            _uiState.update { it.copy(wavelogMessage = "Wavelog URL/token not configured") }
+            return
+        }
+        // Persist the credentials first, then sync with the freshly-typed values.
+        settingsRepo.updateWavelogSettings(settings)
+        _uiState.update { it.copy(wavelogSyncing = true, wavelogMessage = null) }
+        viewModelScope.launch {
+            val grids = wavelogRepo.fetchWorkedGrids(settings.url, settings.token)
+            _uiState.update {
+                if (grids != null) {
+                    settingsRepo.setWorkedGrids(grids)
+                    it.copy(wavelogSyncing = false, workedGridsCount = grids.size, wavelogMessage = null)
+                } else {
+                    it.copy(wavelogSyncing = false, wavelogMessage = "Sync failed — check URL/token/network")
+                }
+            }
+        }
+    }
+
+    private fun syncLoTWGrids(settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings) {
+        if (!settings.isConfigured) {
+            _uiState.update { it.copy(lotwMessage = "LoTW callsign/password not configured") }
+            return
+        }
+        // Persist the credentials first, then sync with the freshly-typed values.
+        settingsRepo.updateLoTWSettings(settings)
+        _uiState.update { it.copy(lotwSyncing = true, lotwMessage = null) }
+        viewModelScope.launch {
+            when (val result = lotwRepo.fetchConfirmedGridQsos(settings.callsign, settings.password)) {
+                is com.rtbishop.look4sat.core.domain.repository.LoTWResult.Success -> {
+                    // Wavelog entry removed: LoTW is now the only source, so the
+                    // synced set fully replaces the stored worked grids.
+                    settingsRepo.setWorkedGrids(result.grids)
+                    settingsRepo.setWorkedGridQsos(result.qsos)
+                    settingsRepo.setRoamedGrids(result.roamedGrids)
+                    _uiState.update { state ->
+                        state.copy(
+                            lotwSyncing = false, workedGridsCount = result.grids.size,
+                            lotwMessage = null
+                        )
+                    }
+                }
+                is com.rtbishop.look4sat.core.domain.repository.LoTWResult.BadCredentials ->
+                    _uiState.update { state ->
+                        state.copy(
+                            lotwSyncing = false,
+                            lotwMessage = "LoTW sync failed — callsign or password incorrect"
+                        )
+                    }
+                is com.rtbishop.look4sat.core.domain.repository.LoTWResult.RateLimited ->
+                    _uiState.update { state ->
+                        state.copy(
+                            lotwSyncing = false,
+                            lotwMessage = "LoTW sync failed — rate limited by server, wait a few minutes and retry"
+                        )
+                    }
+                is com.rtbishop.look4sat.core.domain.repository.LoTWResult.Timeout ->
+                    _uiState.update { state ->
+                        state.copy(
+                            lotwSyncing = false,
+                            lotwMessage = "LoTW sync failed — connection timed out, try another network"
+                        )
+                    }
+                is com.rtbishop.look4sat.core.domain.repository.LoTWResult.NetworkError ->
+                    _uiState.update { state ->
+                        state.copy(
+                            lotwSyncing = false,
+                            lotwMessage = "LoTW sync failed — network error (${result.detail})"
+                        )
+                    }
+            }
+        }
+    }
+
+    // endregion
+
     // region Update checker
 
     private fun checkForUpdate() {
@@ -267,6 +370,8 @@ class SettingsViewModel(
                     databaseRepo = container.databaseRepo,
                     settingsRepo = container.settingsRepo,
                     updateRepo = container.updateRepo,
+                    wavelogRepo = container.wavelogRepo,
+                    lotwRepo = container.lotwRepo,
                     apkFile = File(context.cacheDir, "look4sat-update.apk"),
                     showToast = container.provideShowToast()
                 )

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

@@ -19,7 +19,9 @@ package com.rtbishop.look4sat.feature.settings
 
 import android.content.Intent
 import android.net.Uri
+import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
@@ -29,6 +31,9 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.ElevatedCard
 import androidx.compose.material3.MaterialTheme
@@ -37,6 +42,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
 import androidx.compose.ui.draw.rotate
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.painterResource
@@ -126,7 +132,8 @@ fun UpdateCheckerScreen(
                 !state.hasUpdate -> StatusRow(showSpinner = false, message = stringResource(R.string.update_check_up_to_date))
                 else -> ReleaseCard(
                     state = state,
-                    onDownload = onDownload
+                    onDownload = onDownload,
+                    modifier = Modifier.weight(1f)
                 )
             }
         }
@@ -155,12 +162,12 @@ private fun StatusRow(showSpinner: Boolean, message: String? = null) {
 }
 
 @Composable
-private fun ReleaseCard(state: UpdateCheckerState, onDownload: () -> Unit) {
+private fun ReleaseCard(state: UpdateCheckerState, onDownload: () -> Unit, modifier: Modifier = Modifier) {
     val release = state.release ?: return
-    ElevatedCard(modifier = Modifier.fillMaxWidth()) {
+    ElevatedCard(modifier = modifier.fillMaxWidth()) {
         Column(
             modifier = Modifier
-                .fillMaxWidth()
+                .fillMaxSize()
                 .padding(horizontal = 12.dp, vertical = 10.dp)
         ) {
             Text(
@@ -183,11 +190,24 @@ private fun ReleaseCard(state: UpdateCheckerState, onDownload: () -> Unit) {
                     fontWeight = FontWeight.Medium,
                     fontSize = 13.sp
                 )
-                Text(
-                    text = release.body,
-                    fontSize = 12.sp,
-                    color = MaterialTheme.colorScheme.onSurfaceVariant
-                )
+                Box(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f)
+                        .padding(top = 4.dp)
+                        .clip(RoundedCornerShape(12.dp))
+                        .background(MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.45f))
+                        .verticalScroll(rememberScrollState())
+                        .padding(10.dp)
+                ) {
+                    Text(
+                        text = release.body,
+                        fontSize = 12.sp,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                    )
+                }
+            } else {
+                Spacer(modifier = Modifier.weight(1f))
             }
             Spacer(modifier = Modifier.height(10.dp))
             when {

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

@@ -608,12 +608,16 @@ private fun formatFetchedAt(utcMs: Long): String {
     val cal = Calendar.getInstance()
     cal.timeInMillis = utcMs
     val day = cal.get(Calendar.DAY_OF_MONTH)
-    val month = MONTH_ABBR[cal.get(Calendar.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 "$day$month $year - $hh:$mm:$ss"
+    return if (Locale.getDefault().language == Locale.CHINESE.language) {
+        "${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 {

gradle/libs.versions.toml

@@ -1,8 +1,8 @@
 [versions]
 #noinspection UnusedVersionCatalogEntry
-appVersionCode = "450"
+appVersionCode = "469"
 #noinspection UnusedVersionCatalogEntry
-appVersionName = "4.4.6-ba7opf.6"
+appVersionName = "4.4.6-ba7opf.10.4"
 #noinspection UnusedVersionCatalogEntry
 compileSdk = "37"
 #noinspection UnusedVersionCatalogEntry