feat: enhance AI settings management with local model support and error handling

.gitignore

@@ -40,3 +40,4 @@ CLAUDE.md
 markdown.xml
 .vscode/
 .agents/
+.claude/

app/build.gradle.kts

@@ -275,7 +275,7 @@ dependencies {
 
     // UI Utilities & Extra
     implementation(libs.timber)
-    implementation(libs.generativeai)
+    implementation("com.google.genai:google-genai:${libs.versions.googleGenai.get()}")
     implementation(libs.smooth.corner.rect.android.compose)
     implementation(libs.reorderables)
     implementation(libs.codeview)
@@ -294,6 +294,22 @@ dependencies {
         exclude(group = "androidx.compose.ui")
     }
 
+    // Local AI: TensorFlow Lite
+    implementation(libs.tensorflow.lite)
+    implementation(libs.tensorflow.lite.support) {
+        exclude(group = "com.google.ai.edge.litert", module = "litert-support-api")
+    }
+    implementation(libs.tensorflow.lite.gpu)
+    implementation(libs.tensorflow.lite.task.text) {
+        // Prevent duplicate runtime classes from mixing LiteRT and tensorflow-lite-api artifacts.
+        exclude(group = "org.tensorflow", module = "tensorflow-lite-api")
+        exclude(group = "org.tensorflow", module = "tensorflow-lite-support-api")
+    }
+
+    // Local AI: ML Kit
+    implementation(libs.mlkit.translate)
+    implementation(libs.mlkit.language.id)
+
     // Projects
     implementation(project(":shared"))
 

app/proguard-rules.pro

@@ -213,3 +213,17 @@
     public static int d(...);
     public static int i(...);
 }
+# TensorFlow Lite
+-keep class org.tensorflow.lite.** { *; }
+-dontwarn org.tensorflow.lite.**
+
+# TensorFlow Lite GPU Delegate
+-keep class org.tensorflow.lite.gpu.GpuDelegateFactory$Options { *; }
+-keep class org.tensorflow.lite.gpu.GpuDelegateFactory$Options$GpuBackend { *; }
+
+# TensorFlow Lite Support
+-keep class org.tensorflow.lite.support.label.Category { *; }
+-keep class org.tensorflow.lite.support.** { *; }
+
+# TensorFlow Lite Task
+-keep class org.tensorflow.lite.task.** { *; }

app/src/main/baseline-prof.txt

@@ -30668,7 +30668,6 @@ SPLcom/theveloper/pixelplay/DaggerPixelPlayApplication_HiltComponents_SingletonC
 Lcom/theveloper/pixelplay/DaggerPixelPlayApplication_HiltComponents_SingletonC$SingletonCImpl;
 SPLcom/theveloper/pixelplay/DaggerPixelPlayApplication_HiltComponents_SingletonC$SingletonCImpl;->-$$Nest$fgetapplicationContextModule(Lcom/theveloper/pixelplay/DaggerPixelPlayApplication_HiltComponents_SingletonC$SingletonCImpl;)Ldagger/hilt/android/internal/modules/ApplicationContextModule;
 SPLcom/theveloper/pixelplay/DaggerPixelPlayApplication_HiltComponents_SingletonC$SingletonCImpl;-><init>(Ldagger/hilt/android/internal/modules/ApplicationContextModule;)V
-SPLcom/theveloper/pixelplay/DaggerPixelPlayApplication_HiltComponents_SingletonC$SingletonCImpl;->aiMetadataGenerator()Lcom/theveloper/pixelplay/data/ai/AiMetadataGenerator;
 SPLcom/theveloper/pixelplay/DaggerPixelPlayApplication_HiltComponents_SingletonC$SingletonCImpl;->aiPlaylistGenerator()Lcom/theveloper/pixelplay/data/ai/AiPlaylistGenerator;
 SPLcom/theveloper/pixelplay/DaggerPixelPlayApplication_HiltComponents_SingletonC$SingletonCImpl;->aiUsageDao()Lcom/theveloper/pixelplay/data/database/AiUsageDao;
 SPLcom/theveloper/pixelplay/DaggerPixelPlayApplication_HiltComponents_SingletonC$SingletonCImpl;->hiltWorkerFactory()Landroidx/hilt/work/HiltWorkerFactory;
@@ -31184,22 +31183,19 @@ SPLcom/theveloper/pixelplay/data/DailyMixManager$readEngagements$1;-><init>(Lcom
 SPLcom/theveloper/pixelplay/data/DailyMixManager$readEngagements$1;->invokeSuspend(Ljava/lang/Object;)Ljava/lang/Object;
 Lcom/theveloper/pixelplay/data/DailyMixManager$statsType$1;
 SPLcom/theveloper/pixelplay/data/DailyMixManager$statsType$1;-><init>()V
-Lcom/theveloper/pixelplay/data/ai/AiMetadataGenerator;
-SPLcom/theveloper/pixelplay/data/ai/AiMetadataGenerator;-><clinit>()V
-SPLcom/theveloper/pixelplay/data/ai/AiMetadataGenerator;-><init>(Lcom/theveloper/pixelplay/data/ai/AiOrchestrator;Lkotlinx/serialization/json/Json;)V
 Lcom/theveloper/pixelplay/data/ai/AiNotificationManager;
 SPLcom/theveloper/pixelplay/data/ai/AiNotificationManager;-><clinit>()V
 SPLcom/theveloper/pixelplay/data/ai/AiNotificationManager;-><init>(Landroid/content/Context;)V
 SPLcom/theveloper/pixelplay/data/ai/AiNotificationManager;->createChannel()V
 Lcom/theveloper/pixelplay/data/ai/AiNotificationManager$Companion;
 SPLcom/theveloper/pixelplay/data/ai/AiNotificationManager$Companion;-><init>()V
 SPLcom/theveloper/pixelplay/data/ai/AiNotificationManager$Companion;-><init>(Lkotlin/jvm/internal/DefaultConstructorMarker;)V
-Lcom/theveloper/pixelplay/data/ai/AiOrchestrator;
-SPLcom/theveloper/pixelplay/data/ai/AiOrchestrator;-><clinit>()V
-SPLcom/theveloper/pixelplay/data/ai/AiOrchestrator;-><init>(Lcom/theveloper/pixelplay/data/preferences/AiPreferencesRepository;Lcom/theveloper/pixelplay/data/ai/provider/AiClientFactory;Lcom/theveloper/pixelplay/data/database/AiCacheDao;Lcom/theveloper/pixelplay/data/database/AiUsageDao;Lcom/theveloper/pixelplay/data/ai/AiSystemPromptEngine;Lkotlinx/coroutines/CoroutineScope;)V
+Lcom/theveloper/pixelplay/data/ai/AiHandler;
+SPLcom/theveloper/pixelplay/data/ai/AiHandler;-><clinit>()V
+SPLcom/theveloper/pixelplay/data/ai/AiHandler;-><init>(Lcom/theveloper/pixelplay/data/preferences/AiPreferencesRepository;Lcom/theveloper/pixelplay/data/ai/provider/AiClientFactory;Lcom/theveloper/pixelplay/data/database/AiCacheDao;Lcom/theveloper/pixelplay/data/database/AiUsageDao;Lcom/theveloper/pixelplay/data/ai/AiSystemPromptEngine;Lkotlinx/coroutines/CoroutineScope;)V
 Lcom/theveloper/pixelplay/data/ai/AiPlaylistGenerator;
 SPLcom/theveloper/pixelplay/data/ai/AiPlaylistGenerator;-><clinit>()V
-SPLcom/theveloper/pixelplay/data/ai/AiPlaylistGenerator;-><init>(Lcom/theveloper/pixelplay/data/DailyMixManager;Lcom/theveloper/pixelplay/data/ai/AiOrchestrator;Lcom/theveloper/pixelplay/data/ai/UserProfileDigestGenerator;Lcom/theveloper/pixelplay/data/preferences/AiPreferencesRepository;Lkotlinx/serialization/json/Json;)V
+SPLcom/theveloper/pixelplay/data/ai/AiPlaylistGenerator;-><init>(Lcom/theveloper/pixelplay/data/DailyMixManager;Lcom/theveloper/pixelplay/data/ai/AiHandler;Lcom/theveloper/pixelplay/data/ai/UserProfileDigestGenerator;Lcom/theveloper/pixelplay/data/preferences/AiPreferencesRepository;Lcom/theveloper/pixelplay/data/stats/PlaybackStatsRepository;Lkotlinx/serialization/json/Json;)V
 Lcom/theveloper/pixelplay/data/ai/AiSystemPromptEngine;
 SPLcom/theveloper/pixelplay/data/ai/AiSystemPromptEngine;-><clinit>()V
 SPLcom/theveloper/pixelplay/data/ai/AiSystemPromptEngine;-><init>()V
@@ -37714,15 +37710,13 @@ Lcom/theveloper/pixelplay/presentation/viewmodel/AccountsViewModel_HiltModules_K
 SPLcom/theveloper/pixelplay/presentation/viewmodel/AccountsViewModel_HiltModules_KeyModule_Provide_LazyMapKey;-><clinit>()V
 Lcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;
 SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;-><clinit>()V
-SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;-><init>(Landroid/content/Context;Lcom/theveloper/pixelplay/data/ai/AiPlaylistGenerator;Lcom/theveloper/pixelplay/data/ai/AiMetadataGenerator;Lcom/theveloper/pixelplay/data/DailyMixManager;Lcom/theveloper/pixelplay/data/preferences/PlaylistPreferencesRepository;Lcom/theveloper/pixelplay/presentation/viewmodel/DailyMixStateHolder;Lcom/theveloper/pixelplay/data/ai/AiNotificationManager;)V
+SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;-><init>(Landroid/content/Context;Lcom/theveloper/pixelplay/data/ai/AiPlaylistGenerator;Lcom/theveloper/pixelplay/data/DailyMixManager;Lcom/theveloper/pixelplay/data/preferences/PlaylistPreferencesRepository;Lcom/theveloper/pixelplay/presentation/viewmodel/DailyMixStateHolder;Lcom/theveloper/pixelplay/data/ai/AiNotificationManager;Lcom/theveloper/pixelplay/data/ai/AiHandler;)V
 SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;->getAiError()Lkotlinx/coroutines/flow/StateFlow;
-SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;->getAiMetadataSuccess()Lkotlinx/coroutines/flow/StateFlow;
 SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;->getAiStatus()Lkotlinx/coroutines/flow/StateFlow;
 SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;->getAiSuccess()Lkotlinx/coroutines/flow/StateFlow;
 SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;->getShowAiPlaylistSheet()Lkotlinx/coroutines/flow/StateFlow;
 SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;->initialize(Lkotlinx/coroutines/CoroutineScope;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function0;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function0;)V
 SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;->isGeneratingAiPlaylist()Lkotlinx/coroutines/flow/StateFlow;
-SPLcom/theveloper/pixelplay/presentation/viewmodel/AiStateHolder;->isGeneratingMetadata()Lkotlinx/coroutines/flow/StateFlow;
 Lcom/theveloper/pixelplay/presentation/viewmodel/AiUiSnapshot;
 SPLcom/theveloper/pixelplay/presentation/viewmodel/AiUiSnapshot;-><init>(ZZLjava/lang/String;Ljava/lang/String;Z)V
 SPLcom/theveloper/pixelplay/presentation/viewmodel/AiUiSnapshot;->isGeneratingAiMetadata()Z

app/src/main/java/com/theveloper/pixelplay/data/DailyMixManager.kt

@@ -45,7 +45,9 @@ class DailyMixManager @Inject constructor(
     data class SongEngagementStats(
         val playCount: Int = 0,
         val totalPlayDurationMs: Long = 0L,
-        val lastPlayedTimestamp: Long = 0L
+        val lastPlayedTimestamp: Long = 0L,
+        val skipCount: Int = 0,
+        val completedCount: Int = 0
     )
 
     init {
@@ -118,7 +120,9 @@ class DailyMixManager @Inject constructor(
             entity.songId to SongEngagementStats(
                 playCount = entity.playCount,
                 totalPlayDurationMs = entity.totalPlayDurationMs,
-                lastPlayedTimestamp = entity.lastPlayedTimestamp
+                lastPlayedTimestamp = entity.lastPlayedTimestamp,
+                skipCount = entity.skipCount,
+                completedCount = entity.completedCount
             )
         }
     }
@@ -237,7 +241,9 @@ class DailyMixManager @Inject constructor(
         return stats.copy(
             playCount = stats.playCount.coerceAtLeast(0),
             totalPlayDurationMs = stats.totalPlayDurationMs.coerceAtLeast(0L),
-            lastPlayedTimestamp = stats.lastPlayedTimestamp.coerceAtLeast(0L)
+            lastPlayedTimestamp = stats.lastPlayedTimestamp.coerceAtLeast(0L),
+            skipCount = stats.skipCount.coerceAtLeast(0),
+            completedCount = stats.completedCount.coerceAtLeast(0)
         )
     }
 
@@ -257,6 +263,24 @@ class DailyMixManager @Inject constructor(
         )
     }
 
+    suspend fun recordEngagement(
+        songId: String,
+        playInc: Int,
+        songDurationMs: Long = 0L,
+        timestamp: Long = System.currentTimeMillis(),
+        skipInc: Int = 0,
+        completedInc: Int = 0
+    ) {
+        engagementDao.recordEngagement(
+            songId = songId,
+            playInc = playInc,
+            durationMs = songDurationMs.coerceAtLeast(0L),
+            timestamp = timestamp.coerceAtLeast(0L),
+            skipInc = skipInc,
+            completedInc = completedInc
+        )
+    }
+
     suspend fun incrementScore(songId: String) {
         recordPlay(songId)
     }
@@ -270,7 +294,9 @@ class DailyMixManager @Inject constructor(
             SongEngagementStats(
                 playCount = entity.playCount,
                 totalPlayDurationMs = entity.totalPlayDurationMs,
-                lastPlayedTimestamp = entity.lastPlayedTimestamp
+                lastPlayedTimestamp = entity.lastPlayedTimestamp,
+                skipCount = entity.skipCount,
+                completedCount = entity.completedCount
             )
         }
     }
@@ -282,7 +308,7 @@ class DailyMixManager @Inject constructor(
     private suspend fun computeRankedSongs(
         allSongs: List<Song>,
         favoriteSongIds: Set<String>,
-        random: java.util.Random
+        random: kotlin.random.Random
     ): List<RankedSong> {
         if (allSongs.isEmpty()) return emptyList()
 
@@ -367,7 +393,7 @@ class DailyMixManager @Inject constructor(
 
         val calendar = Calendar.getInstance()
         val seed = calendar.get(Calendar.YEAR) * 1000 + calendar.get(Calendar.DAY_OF_YEAR)
-        val random = java.util.Random(seed.toLong())
+        val random = kotlin.random.Random(seed.toLong())
 
         val rankedSongs = computeRankedSongs(allSongs, favoriteSongIds, random)
         if (rankedSongs.isEmpty()) {
@@ -398,7 +424,7 @@ class DailyMixManager @Inject constructor(
 
         val calendar = Calendar.getInstance()
         val seed = calendar.get(Calendar.YEAR) * 1000 + calendar.get(Calendar.DAY_OF_YEAR) + 17
-        val random = java.util.Random(seed.toLong())
+        val random = kotlin.random.Random(seed.toLong())
         val rankedSongs = computeRankedSongs(allSongs, favoriteSongIds, random)
 
         if (rankedSongs.isEmpty()) {
@@ -466,7 +492,7 @@ class DailyMixManager @Inject constructor(
         // if called multiple times in one day, preserving prompt caching.
         val calendar = Calendar.getInstance()
         val seed = calendar.get(Calendar.YEAR) * 1000 + calendar.get(Calendar.DAY_OF_YEAR) + 42
-        val random = java.util.Random(seed.toLong())
+        val random = kotlin.random.Random(seed.toLong())
 
         val rankedSongs = computeRankedSongs(allSongs, favoriteSongIds, random)
         if (rankedSongs.isEmpty()) {