fix(nav): resolve the menu layout in core:domain so page order actually applies

用户报告"把 AMSAT 从更多菜单移到主菜单没生效"。排查后发现这是两个互相
掩盖的 bug, 其中一个会让用户永久无法进入设置页。

## Bug 1 (致命): 移任意页进主菜单 -> 设置入口从所有菜单消失

对"主菜单上限 5"的定义两处不一致:
- SettingsScreen.kt:892 判断 mainItems.filter { it != "Settings" }.size >= 5,
  上限是【不含 Settings 的 5 个】, 于是认为 [Satellites,Passes,Radar,Map]
  还有空位, 直接追加 -> 共 6 项
- MainScreen.kt:165 的 .take(5) 上限是【含 Settings 的前 5 个】, 而 Settings
  排在最后 -> 被截断丢弃

结果 Settings 既不在底栏也不在更多菜单(它不在 subMenuOrder 里), 用户再也
进不去设置页, 无法自行改回, 只能清数据或重装。

## Bug 2 (用户报告): AMSAT / WavelogLog 移到主菜单被静默撤销

MainScreen.kt:161-163 给老用户补新页面的迁移逻辑【无条件执行】:

    .let { list -> if ("AMSAT" in list) list else list + "AMSAT" }

用户把 AMSAT 移出子菜单后 subMenuOrder 里没有它, 这段又加回去, 第 165 行
filter { it.screenId !in subOrder } 于是永远过滤掉 AMSAT。

副作用: 这个 bug 恰好把主菜单拉回 5 项内, 反而掩盖了 Bug 1 —— 所以用户只
看到"AMSAT 移不过去", 没触发"设置锁死"。

## Bug 3: 溢出页面凭空消失而非落入更多菜单

.take(5) 直接丢弃超出的页面, 它们既不在底栏也不在更多菜单。

## Bug 4: 设置页展示顺序与底栏实际顺序不一致 (WYSIWYG 失效)

两处各自实现排序: 设置页不做 take(5)、用 sortedWith 把 Settings 钉最后;
MainScreen 做 take(5)、Settings 位置由 screenOrder 决定。

## Bug 5: 更多菜单里 AMSAT / Roaming 当前页不高亮

MoreMenuPopup.kt:69-79 的 when (currentKey) 缺 AmSat 与 Roaming 分支,
MainScreen.kt:188-198 缺 Roaming 分支, 靠 else -> false 兜底, 新增页面时
不会有编译错误提醒。Screen 子类都是 data object, 直接用 currentKey == screen
即可, 新增页面自动生效。

## Bug 6: 设置页主菜单区不过滤 hiddenScreens

MainScreen 会过滤隐藏页, 设置页不过滤, 于是隐藏的页面仍占据设置页的位置且
"移出主菜单"按钮可点, 与底栏实际情况不符。

## 改动

新增 core/domain/navigation/MenuLayout.kt (纯 Kotlin, 为 KMP 就绪) 作为菜单
布局的唯一入口:
- resolve(): 持久化偏好 -> 底栏 + 更多菜单。先给 Settings 预留名额再截断,
  溢出页面落入更多菜单而非丢弃; 两个列表都没提到的页面按默认归位(升级不丢页)
- moveToMain() / moveToMore(): 移动语义集中一处, 拒绝把 Settings 移出

MainScreen 与 SettingsScreen 改为共用它, 删除双份实现与无条件迁移逻辑。

## 死代码清理 (每项已 grep 全仓库确认零引用)

- SettingsAction.ResetScreenOrder: 无任何派发点, 仅定义与 when 分支
- UiSettingsCard 的 onReorder 参数: 函数体内两个 DragOrderList 的 onReorder
  实参都调 onUpdateMenu, 从未调用该参数
- SettingsAction.ReorderScreens: 唯一引用是上面那个死参数
- MainScreen 的 navigateToRadar 参数: 函数体内唯一出现是注释掉的一行
- Navigation.kt 的 defaultScreenOrder / defaultSubMenuOrder: 迁移后零引用,
  默认值已在 MenuLayout 内

保留 entry<RadarDestination> 分支不动 —— RadarDestination NavKey 被
PassDetailsMatcher deeplink 使用。

## 验证

- MenuLayoutTest 13 个新测试全绿, 每个对应上面一个 bug 场景
- :core:domain:test 全量 100 个测试 0 失败 0 错误
  (DataParser 19 / Doppler 17 / Qth 8 / Transponder 7 / CwCtc 7 /
   CwDeepBuffer 13 / CwGolden 3 / CwSpectrogram 8 / MenuLayout 13 /
   WaveLogApi 5)
- :core:domain:compileKotlin + :core:presentation + :app +
  :feature:settings compileDebugKotlin => BUILD SUCCESSFUL
- 用 Python 复刻新规则重跑当初失败的全部场景: 5 个页面逐一移入主菜单,
  设置入口全部保住、页面无丢失; 隐藏页 + 移动组合无页面丢失; 幂等性通过

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

@@ -80,6 +80,7 @@ import androidx.navigation3.runtime.rememberSaveableStateHolderNavEntryDecorator
 import androidx.navigation3.ui.NavDisplay
 import com.rtbishop.look4sat.core.domain.repository.IContainerProvider
 import com.rtbishop.look4sat.core.domain.repository.MutualPassData
+import com.rtbishop.look4sat.core.domain.navigation.MenuLayout
 import com.rtbishop.look4sat.core.presentation.DeeplinkResolver
 import com.rtbishop.look4sat.core.presentation.ElevationThresholds
 import com.rtbishop.look4sat.core.presentation.LocalElevationThresholds
@@ -124,7 +125,7 @@ fun NavRoot(deeplink: String? = null) {
             rememberViewModelStoreNavEntryDecorator() // Required for ViewModel scoping per entry
         ),
         entryProvider = entryProvider {
-            entry<Screen.Passes> { MainScreen(navigateToRadar = { rootBackStack.add(RadarDestination) }) }
+            entry<Screen.Passes> { MainScreen() }
             entry<RadarDestination> {
                 Scaffold { innerPadding ->
                     RadarDestination(navigateUp = navigateBack)
@@ -136,7 +137,7 @@ fun NavRoot(deeplink: String? = null) {
 }
 
 @Composable
-fun MainScreen(navigateToRadar: () -> Unit = {}) {
+fun MainScreen() {
     val backStack = rememberNavBackStack(Screen.Passes)
     val currentKey = backStack.lastOrNull()
     val navigateBack: () -> Unit = { backStack.removeLastOrNull() }
@@ -145,27 +146,27 @@ fun MainScreen(navigateToRadar: () -> Unit = {}) {
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
     val trackingState by container.radioTrackingService.state.collectAsStateWithLifecycle()
     val otherSettings by container.settingsRepo.otherSettings.collectAsStateWithLifecycle()
-    // UI settings: sort by screenOrder (empty = default order), then filter by hiddenScreens (Settings always kept)
-    val allNavItems = listOf(Screen.Satellites, Screen.Passes, Screen.Radar, Screen.Mutual, Screen.Roaming, Screen.CwDecode, Screen.WavelogLog, Screen.AmSat, Screen.Map, Screen.Settings)
-        .sortedBy { screen ->
-            // Unknown pages (e.g. CwDecode not in old persisted order): use default-order position (Roaming<->Map), then fall back to last
-            val idx = otherSettings.screenOrder.indexOf(screen.screenId)
-            if (idx != -1) idx
-            else com.rtbishop.look4sat.core.presentation.defaultScreenOrder.indexOf(screen.screenId).let {
-                if (it != -1) it else Int.MAX_VALUE
-            }
-        }
-        .filter { it.screenId !in otherSettings.hiddenScreens || it is Screen.Settings }
-    // 4.5.1 foldable menu: main menu (5 bottom-bar slots) + More menu (overflow page)
-    // Legacy migration: persisted subMenuOrder lacks new pages (WavelogLog) -> append to the sub-menu tail
-    val subOrder = (otherSettings.subMenuOrder.ifEmpty { com.rtbishop.look4sat.core.presentation.defaultSubMenuOrder })
-        .let { list -> if ("WavelogLog" in list) list else list + "WavelogLog" }
-        .let { list -> if ("AMSAT" in list) list else list + "AMSAT" }
-    val mainNavItems = remember(allNavItems, subOrder) {
-        allNavItems.filter { it.screenId !in subOrder }.take(5)
+    // Menu layout is resolved in core:domain so the bar and the settings editor
+    // cannot disagree, and so Settings can never be pushed out of both menus.
+    val allNavItems = listOf(
+        Screen.Satellites, Screen.Passes, Screen.Radar, Screen.Mutual, Screen.Roaming,
+        Screen.CwDecode, Screen.WavelogLog, Screen.AmSat, Screen.Map, Screen.Settings
+    )
+    val menuLayout = remember(
+        otherSettings.screenOrder, otherSettings.subMenuOrder, otherSettings.hiddenScreens
+    ) {
+        MenuLayout.resolve(
+            allScreenIds = allNavItems.map { it.screenId },
+            screenOrder = otherSettings.screenOrder,
+            subMenuOrder = otherSettings.subMenuOrder,
+            hiddenScreenIds = otherSettings.hiddenScreens
+        )
     }
-    val moreNavItems = remember(allNavItems, subOrder) {
-        subOrder.mapNotNull { id -> allNavItems.find { it.screenId == id } }
+    val mainNavItems = remember(menuLayout) {
+        menuLayout.mainIds.mapNotNull { id -> allNavItems.find { it.screenId == id } }
+    }
+    val moreNavItems = remember(menuLayout) {
+        menuLayout.moreIds.mapNotNull { id -> allNavItems.find { it.screenId == id } }
     }
     var moreExpanded by remember { mutableStateOf(false) }
     // Intercept Back while the More menu is open: close the menu first
@@ -185,18 +186,9 @@ fun MainScreen(navigateToRadar: () -> Unit = {}) {
         NavigationSuiteScaffold(
             navigationSuiteItems = {
                 mainNavItems.forEach { screen ->
-                    val isSelected = when (currentKey) {
-                        is Screen.Satellites -> screen is Screen.Satellites
-                        is Screen.Passes -> screen is Screen.Passes
-                        is Screen.Radar -> screen is Screen.Radar
-                        is Screen.Mutual -> screen is Screen.Mutual
-                        is Screen.CwDecode -> screen is Screen.CwDecode
-                        is Screen.WavelogLog -> screen is Screen.WavelogLog
-                        is Screen.AmSat -> screen is Screen.AmSat
-                        is Screen.Map -> screen is Screen.Map
-                        is Screen.Settings -> screen is Screen.Settings
-                        else -> false
-                    }
+                    // Screen subclasses are data objects, so identity is enough and
+                    // newly added pages highlight without touching this call site.
+                    val isSelected = currentKey == screen
                     item(
                         icon = { Icon(painterResource(screen.iconResId), stringResource(screen.titleResId)) },
                         label = { Text(stringResource(screen.titleResId)) },
@@ -257,7 +249,6 @@ fun MainScreen(navigateToRadar: () -> Unit = {}) {
                                     container.setMutualPassData(MutualPassData())
                                     container.satelliteRepo.selectPass(catNum, aosTime)
                                     backStack.add(Screen.Radar)
-    //                            navigateToRadar()
                                 }
                             }
                             entry<Screen.Radar> {

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

@@ -66,17 +66,10 @@ fun MoreMenuPopup(
         ) {
             Column(modifier = Modifier.padding(vertical = 4.dp)) {
                 items.forEach { screen ->
-                    val isSelected = when (currentKey) {
-                        is Screen.Satellites -> screen is Screen.Satellites
-                        is Screen.Passes -> screen is Screen.Passes
-                        is Screen.Radar -> screen is Screen.Radar
-                        is Screen.Mutual -> screen is Screen.Mutual
-                        is Screen.CwDecode -> screen is Screen.CwDecode
-                        is Screen.WavelogLog -> screen is Screen.WavelogLog
-                        is Screen.Map -> screen is Screen.Map
-                        is Screen.Settings -> screen is Screen.Settings
-                        else -> false
-                    }
+                    // Screen subclasses are data objects, so identity is enough. The
+                    // old per-type when was missing AmSat and Roaming, leaving those
+                    // pages unhighlighted while open.
+                    val isSelected = currentKey == screen
                     Row(
                         verticalAlignment = Alignment.CenterVertically,
                         modifier = Modifier