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/androidMain/kotlin/com/example/mycrib/MainActivity.kt

@@ -22,10 +22,10 @@ import coil3.memory.MemoryCache
 import coil3.request.crossfade
 import coil3.util.DebugLogger
 import okio.FileSystem
-import com.mycrib.storage.TokenManager
-import com.mycrib.storage.TokenStorage
-import com.mycrib.storage.TaskCacheManager
-import com.mycrib.storage.TaskCacheStorage
+import com.example.mycrib.storage.TokenManager
+import com.example.mycrib.storage.TokenStorage
+import com.example.mycrib.storage.TaskCacheManager
+import com.example.mycrib.storage.TaskCacheStorage
 import com.example.mycrib.fcm.FCMManager
 import kotlinx.coroutines.launch
 
@@ -78,21 +78,21 @@ class MainActivity : ComponentActivity(), SingletonImageLoader.Factory {
         try {
             val authToken = TokenStorage.getToken()
             if (authToken != null) {
-                val notificationApi = com.mycrib.shared.network.NotificationApi()
-                val request = com.mycrib.shared.models.DeviceRegistrationRequest(
+                val notificationApi = com.example.mycrib.network.NotificationApi()
+                val request = com.example.mycrib.models.DeviceRegistrationRequest(
                     registrationId = fcmToken,
                     platform = "android"
                 )
 
                 when (val result = notificationApi.registerDevice(authToken, request)) {
-                    is com.mycrib.shared.network.ApiResult.Success -> {
+                    is com.example.mycrib.network.ApiResult.Success -> {
                         Log.d("MainActivity", "Device registered successfully: ${result.data}")
                     }
-                    is com.mycrib.shared.network.ApiResult.Error -> {
+                    is com.example.mycrib.network.ApiResult.Error -> {
                         Log.e("MainActivity", "Failed to register device: ${result.message}")
                     }
-                    is com.mycrib.shared.network.ApiResult.Loading,
-                    is com.mycrib.shared.network.ApiResult.Idle -> {
+                    is com.example.mycrib.network.ApiResult.Loading,
+                    is com.example.mycrib.network.ApiResult.Idle -> {
                         // These states shouldn't occur for direct API calls
                     }
                 }

composeApp/src/androidMain/kotlin/com/example/mycrib/MyFirebaseMessagingService.kt

@@ -30,23 +30,23 @@ class MyFirebaseMessagingService : FirebaseMessagingService() {
         // Note: In a real app, you might want to use WorkManager for reliable delivery
         CoroutineScope(Dispatchers.IO).launch {
             try {
-                val authToken = com.mycrib.storage.TokenStorage.getToken()
+                val authToken = com.example.mycrib.storage.TokenStorage.getToken()
                 if (authToken != null) {
-                    val notificationApi = com.mycrib.shared.network.NotificationApi()
-                    val request = com.mycrib.shared.models.DeviceRegistrationRequest(
+                    val notificationApi = com.example.mycrib.network.NotificationApi()
+                    val request = com.example.mycrib.models.DeviceRegistrationRequest(
                         registrationId = token,
                         platform = "android"
                     )
 
                     when (val result = notificationApi.registerDevice(authToken, request)) {
-                        is com.mycrib.shared.network.ApiResult.Success -> {
+                        is com.example.mycrib.network.ApiResult.Success -> {
                             Log.d(TAG, "Device registered successfully with new token")
                         }
-                        is com.mycrib.shared.network.ApiResult.Error -> {
+                        is com.example.mycrib.network.ApiResult.Error -> {
                             Log.e(TAG, "Failed to register device with new token: ${result.message}")
                         }
-                        is com.mycrib.shared.network.ApiResult.Loading,
-                        is com.mycrib.shared.network.ApiResult.Idle -> {
+                        is com.example.mycrib.network.ApiResult.Loading,
+                        is com.example.mycrib.network.ApiResult.Idle -> {
                             // These states shouldn't occur for direct API calls
                         }
                     }

composeApp/src/androidMain/kotlin/com/example/mycrib/network/ApiClient.android.kt

@@ -1,4 +1,4 @@
-package com.mycrib.shared.network
+package com.example.mycrib.network
 
 import io.ktor.client.*
 import io.ktor.client.engine.okhttp.*

composeApp/src/androidMain/kotlin/com/example/mycrib/platform/ImageLoader.android.kt

@@ -1,4 +1,4 @@
-package com.mycrib.android.platform
+package com.example.mycrib.platform
 
 import android.content.Context
 import coil3.ImageLoader

composeApp/src/androidMain/kotlin/com/example/mycrib/platform/ImagePicker.android.kt

@@ -1,4 +1,4 @@
-package com.mycrib.platform
+package com.example.mycrib.platform
 
 import android.content.Context
 import android.net.Uri

composeApp/src/androidMain/kotlin/com/example/mycrib/storage/TaskCacheManager.android.kt

@@ -1,4 +1,4 @@
-package com.mycrib.storage
+package com.example.mycrib.storage
 
 import android.content.Context
 import android.content.SharedPreferences

composeApp/src/androidMain/kotlin/com/example/mycrib/storage/TaskCacheStorage.android.kt

@@ -1,4 +1,4 @@
-package com.mycrib.storage
+package com.example.mycrib.storage
 
 internal actual fun getPlatformTaskCacheManager(): TaskCacheManager? {
     // Android requires context, so must use initialize() method

composeApp/src/androidMain/kotlin/com/example/mycrib/storage/TokenManager.android.kt

@@ -1,4 +1,4 @@
-package com.mycrib.storage
+package com.example.mycrib.storage
 
 import android.content.Context
 import android.content.SharedPreferences

composeApp/src/androidMain/kotlin/com/example/mycrib/storage/TokenStorage.android.kt

@@ -1,4 +1,4 @@
-package com.mycrib.storage
+package com.example.mycrib.storage
 
 internal actual fun getPlatformTokenManager(): TokenManager? {
     // Android requires context, so must use initialize() method

composeApp/src/androidMain/kotlin/com/example/mycrib/util/ImageCompressor.android.kt

@@ -1,8 +1,8 @@
-package com.mycrib.util
+package com.example.mycrib.util
 
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
-import com.mycrib.platform.ImageData
+import com.example.mycrib.platform.ImageData
 import java.io.ByteArrayOutputStream
 
 /**

composeApp/src/androidMain/kotlin/com/mycrib/android/ui/components/TaskSummaryCard.kt

@@ -1,4 +1,4 @@
-package com.mycrib.android.ui.components
+package com.example.mycrib.ui.components
 
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.*
@@ -10,8 +10,8 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
-import com.mycrib.shared.models.TaskSummary
-import com.mycrib.shared.models.TaskColumnCategory
+import com.example.mycrib.models.TaskSummary
+import com.example.mycrib.models.TaskColumnCategory
 
 /**
  * Displays a task summary with dynamic categories from the backend.