Add Android theme system and fix package naming issues

This commit adds a comprehensive theming system to Android matching iOS, and fixes package declarations throughout the codebase to match directory structure.

Theme System Additions:
- Added 11 themes matching iOS: Default, Teal, Ocean, Forest, Sunset, Monochrome, Lavender, Crimson, Midnight, Desert, Mint
- Created ThemeColors.kt with exact iOS color values for light/dark modes
- Added ThemeManager.kt for dynamic theme switching
- Created Spacing.kt with standardized spacing constants (xs/sm/md/lg/xl)
- Added ThemePickerDialog.kt for theme selection UI
- Integrated theme switching in ProfileScreen.kt
- Updated App.kt to observe ThemeManager for reactive theming

Component Library:
- Added StandardCard.kt and CompactCard.kt for consistent card styling
- Added FormTextField.kt with error/helper text support
- Added FormSection.kt for grouping related form fields
- Added StandardEmptyState.kt for empty state UI

Package Migration:
- Fixed all package declarations to match directory structure (com.example.mycrib.*)
- Updated package declarations in commonMain, androidMain, and iosMain
- Fixed all import statements across entire codebase
- Ensures compilation on both Android and iOS platforms

iOS Theme Rename:
- Renamed "Default" theme to "Teal" in iOS
- Renamed "Bright" theme to "Default" in iOS to make vibrant colors the default

Build Status:
- ✅ Android builds successfully
- ✅ iOS builds successfully

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

composeApp/src/commonMain/kotlin/com/example/mycrib/App.kt

@@ -16,20 +16,20 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import com.mycrib.android.ui.screens.AddResidenceScreen
-import com.mycrib.android.ui.screens.EditResidenceScreen
-import com.mycrib.android.ui.screens.EditTaskScreen
-import com.mycrib.android.ui.screens.ForgotPasswordScreen
-import com.mycrib.android.ui.screens.HomeScreen
-import com.mycrib.android.ui.screens.LoginScreen
-import com.mycrib.android.ui.screens.RegisterScreen
-import com.mycrib.android.ui.screens.ResetPasswordScreen
-import com.mycrib.android.ui.screens.ResidenceDetailScreen
-import com.mycrib.android.ui.screens.ResidencesScreen
-import com.mycrib.android.ui.screens.TasksScreen
-import com.mycrib.android.ui.screens.VerifyEmailScreen
-import com.mycrib.android.ui.screens.VerifyResetCodeScreen
-import com.mycrib.android.viewmodel.PasswordResetViewModel
+import com.example.mycrib.ui.screens.AddResidenceScreen
+import com.example.mycrib.ui.screens.EditResidenceScreen
+import com.example.mycrib.ui.screens.EditTaskScreen
+import com.example.mycrib.ui.screens.ForgotPasswordScreen
+import com.example.mycrib.ui.screens.HomeScreen
+import com.example.mycrib.ui.screens.LoginScreen
+import com.example.mycrib.ui.screens.RegisterScreen
+import com.example.mycrib.ui.screens.ResetPasswordScreen
+import com.example.mycrib.ui.screens.ResidenceDetailScreen
+import com.example.mycrib.ui.screens.ResidencesScreen
+import com.example.mycrib.ui.screens.TasksScreen
+import com.example.mycrib.ui.screens.VerifyEmailScreen
+import com.example.mycrib.ui.screens.VerifyResetCodeScreen
+import com.example.mycrib.viewmodel.PasswordResetViewModel
 import androidx.lifecycle.viewmodel.compose.viewModel
 import org.jetbrains.compose.resources.painterResource
 import org.jetbrains.compose.ui.tooling.preview.Preview
@@ -38,20 +38,21 @@ import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.rememberNavController
 import androidx.navigation.compose.composable
 import androidx.navigation.toRoute
-import com.mycrib.android.ui.screens.MainScreen
-import com.mycrib.android.ui.screens.ProfileScreen
-import com.mycrib.android.ui.theme.MyCribTheme
-import com.mycrib.navigation.*
-import com.mycrib.repository.LookupsRepository
-import com.mycrib.shared.models.Residence
-import com.mycrib.shared.models.TaskCategory
-import com.mycrib.shared.models.TaskDetail
-import com.mycrib.shared.models.TaskFrequency
-import com.mycrib.shared.models.TaskPriority
-import com.mycrib.shared.models.TaskStatus
-import com.mycrib.shared.network.ApiResult
-import com.mycrib.shared.network.AuthApi
-import com.mycrib.storage.TokenStorage
+import com.example.mycrib.ui.screens.MainScreen
+import com.example.mycrib.ui.screens.ProfileScreen
+import com.example.mycrib.ui.theme.MyCribTheme
+import com.example.mycrib.ui.theme.ThemeManager
+import com.example.mycrib.navigation.*
+import com.example.mycrib.repository.LookupsRepository
+import com.example.mycrib.models.Residence
+import com.example.mycrib.models.TaskCategory
+import com.example.mycrib.models.TaskDetail
+import com.example.mycrib.models.TaskFrequency
+import com.example.mycrib.models.TaskPriority
+import com.example.mycrib.models.TaskStatus
+import com.example.mycrib.network.ApiResult
+import com.example.mycrib.network.AuthApi
+import com.example.mycrib.storage.TokenStorage
 
 import mycrib.composeapp.generated.resources.Res
 import mycrib.composeapp.generated.resources.compose_multiplatform
@@ -95,7 +96,9 @@ fun App(
         isCheckingAuth = false
     }
 
-    MyCribTheme {
+    val currentTheme by remember { derivedStateOf { ThemeManager.currentTheme } }
+
+    MyCribTheme(themeColors = currentTheme) {
         if (isCheckingAuth) {
             // Show loading screen while checking auth
             Surface(