refactor: remove bottom navigation bar (#665 #666 #667 #668) (#672)

* refactor(nav): remove bottom NavigationBar from Scaffold (#665)

* refactor(theme): remove BottomNavDisplayMode enum (#666)

* refactor(settings): remove nav bar customization page (#667)

* chore: clean up unused imports after bottom nav removal (#668)

* chore: remove dead bottom nav infrastructure after removal

- Remove SettingsNavBar NavKey (NavigationKeys.kt)
- Remove bottomNavItems field from ServerStoreState + migration code
- Remove _bottomNavItemsFlow, getBottomNavItems, setBottomNavItems from AuthManager
- Remove bottomNavItems handling from selfHealed() (ServerCollectionOps)
- Remove redundant bottomBar={} from Scaffold (Navigation.kt)
- Remove unused nav bar strings from values/strings.xml + values-ko/strings.xml
- Remove content_desc_move_up/down/remove_item strings
- Update SettingsViewModelTest.kt (drop stale getBottomNavItems mock)
- Update ServerStoreTest.kt (remove bottomNavItems assertions)

---------

Co-authored-by: M57 <Hy4ri@users.noreply.github.com>

app/src/main/java/com/m57/hermescontrol/data/local/AuthManager.kt

@@ -16,7 +16,6 @@ import com.m57.hermescontrol.data.model.PinnedModel
 import com.m57.hermescontrol.data.remote.CleartextPolicy
 import com.m57.hermescontrol.data.remote.CookieManager
 import com.m57.hermescontrol.data.remote.ServerEndpoint
-import com.m57.hermescontrol.theme.BottomNavDisplayMode
 import com.m57.hermescontrol.theme.ThemePreference
 import com.m57.hermescontrol.theme.ThemePreset
 import kotlinx.coroutines.CoroutineScope
@@ -61,9 +60,6 @@ object AuthManager {
                 "AuthManager not initialized. Call init(context) first.",
             )
 
-    private val _bottomNavItemsFlow = MutableStateFlow<List<String>>(emptyList())
-    val bottomNavItemsFlow: StateFlow<List<String>> = _bottomNavItemsFlow.asStateFlow()
-
     private val _themePreferenceFlow = MutableStateFlow<ThemePreference>(ThemePreference.SYSTEM)
     val themePreferenceFlow: StateFlow<ThemePreference> = _themePreferenceFlow.asStateFlow()
 
@@ -73,9 +69,6 @@ object AuthManager {
     private val _themePresetFlow = MutableStateFlow<ThemePreset>(ThemePreset.DEFAULT)
     val themePresetFlow: StateFlow<ThemePreset> = _themePresetFlow.asStateFlow()
 
-    private val _bottomNavDisplayModeFlow = MutableStateFlow<BottomNavDisplayMode>(BottomNavDisplayMode.ICON_AND_TEXT)
-    val bottomNavDisplayModeFlow: StateFlow<BottomNavDisplayMode> = _bottomNavDisplayModeFlow.asStateFlow()
-
     private val _tokenFlow = MutableStateFlow<String?>(null)
     val tokenFlow: StateFlow<String?> = _tokenFlow.asStateFlow()
 
@@ -133,11 +126,9 @@ object AuthManager {
 
             scope.launch {
                 store.stateFlow.collect { state ->
-                    _bottomNavItemsFlow.value = state.bottomNavItems
                     _themePreferenceFlow.value = state.themePreference
                     _useDynamicColorsFlow.value = state.useDynamicColors
                     _themePresetFlow.value = state.themePreset
-                    _bottomNavDisplayModeFlow.value = state.bottomNavDisplayMode
                     // B7 (Jul 08 2026, kanban t_470): keep cookie scope aligned with active profile.
                     syncCookieStoreForProfile(state.selectedProfileId)
                 }
@@ -512,16 +503,6 @@ object AuthManager {
         )
     }
 
-    // ── Bottom nav bar items ──────────────────────────────────────────────
-
-    /** Returns the list of selected bottom-nav item keys (data-object names). */
-    fun getBottomNavItems(): List<String> = serverStore.getLatestState().bottomNavItems
-
-    /** Persist the ordered list of bottom-nav item keys (max 5, data-object names). */
-    fun setBottomNavItems(items: List<String>) {
-        serverStore.update { it.copy(bottomNavItems = items) }
-    }
-
     // ── Typing Effect ───────────────────────────────────────────────────
 
     fun isTypingEffectEnabled(): Boolean = serverStore.getLatestState().typingEffectEnabled
@@ -544,12 +525,4 @@ object AuthManager {
     fun setTypingEffectDelayMs(delayMs: Int) {
         serverStore.update { it.copy(typingEffectDelayMs = delayMs) }
     }
-
-    // ── Bottom Nav Display Mode ──────────────────────────────────────────
-
-    fun getBottomNavDisplayMode(): BottomNavDisplayMode = serverStore.getLatestState().bottomNavDisplayMode
-
-    fun setBottomNavDisplayMode(mode: BottomNavDisplayMode) {
-        serverStore.update { it.copy(bottomNavDisplayMode = mode) }
-    }
 }