refactor(android): reorganize codebase for easier navigation

- Split BibleDatabase (607 lines) into 7 domain DAOs:
  VerseDao, FavoritesDao, HighlightsDao, NotesDao,
  ReadingAnalyticsDao, InterlinearDao, LexiconDao.
  BibleDatabase now delegates to DAOs (zero API breakage).

- Split SettingsScreens (531 lines) into one file per screen:
  SettingsComponents, GatewaySettingsPage, AudioSettingsPage,
  ReaderSettingsPage, UpdateSettingsPage under ui/screens/settings/.

- Reorganized all 17 test files from flat root package to mirror
  main source structure (bible/, gateway/, models/, settings/, etc.)

- Added gradle/libs.versions.toml version catalog (centralized
  all 22 dependency versions, removed inline version strings).

- Removed enableJetifier=true (all deps are AndroidX-native).

- Updated mobile/README.md to reflect current gateway-based architecture.

Author: github-actions[bot]

mobile/README.md

@@ -1,45 +1,47 @@
-# Metanoia Mobile TTS (Pixel 9 Pro Offline)
+# Metanoia Mobile
 
-This is a Kotlin port of the Metanoia TTS server, designed to run **Qwen3-TTS-0.6B** and **Whisper** locally on Android using **ONNX Runtime (ORT)** and **Tensor G4 NNAPI**.
+Kotlin/Compose Bible study app with gateway-proxied AI services (TTS, STT, interlinear, lexicon) and full offline Bible caching.
 
-## Repository Structure & Large Files
-To keep the repository lightweight, large binary files are **ignored by Git**. This includes:
-- **Models:** Any `.bin`, `.onnx`, `.data`, or `.npy` files in `mobile/app/src/main/assets/` or `mobile/models/`.
-- **Build Artifacts:** Android `build/` directories, `.apk` files, and `.aar` libraries.
+## Architecture
 
-### Model Placement
-After converting your models (see below), place them in:
-- `mobile/app/src/main/assets/`: For models used directly by the Android app.
-- `mobile/models/`: For raw or intermediate ONNX models.
-
-Example required files (not in repo):
-- `mobile/app/src/main/assets/granite_350m_instruct.bin`
-- `mobile/models/vocoder.onnx`
-- `mobile/models/talker_decode.onnx.data`
+```
+mobile/app/src/main/java/com/bytecats/metanoia/
+├── bible/           Bible data layer (scraping, DB, analytics)
+│   └── dao/         Domain-specific database access objects
+├── gateway/         HTTP client for the Metanoia gateway server
+├── models/          Data classes and constants
+├── settings/        SharedPreferences wrapper
+├── stt/             Speech-to-text manager
+├── tts/             Text-to-speech manager and audio player
+├── update/          Nightly update checker and APK installer
+├── viewmodel/       MainViewModel (app-level state coordinator)
+└── ui/
+    ├── screens/     Full-screen Compose destinations
+    │   └── settings/  Settings sub-screens (one per file)
+    ├── components/  Reusable Compose components
+    │   └── bible/   Bible-specific UI (verse items, grids, sheets)
+    └── theme/       Material3 theme definition
+```
 
-## How to Port the Models
-The 0.6B PyTorch model cannot run directly in Kotlin. You must convert it to ONNX:
+## Build
 
-### 1. Convert Qwen3-TTS to ONNX
 ```bash
-python -m onnxruntime.tools.convert_onnx_models_to_ort 
-  --model_path qwen3_tts.onnx 
-  --output_dir app/src/main/assets/models/
-```
-*Note: Ensure you use INT8 quantization to keep the model under 700MB for mobile RAM.*
-
-### 2. Convert Whisper to TFLite/ONNX
-For the transcribe feature, use the `whisper.cpp` optimized Android models or OpenAI's official TFLite conversion.
-
-## Android Dependencies
-Add these to `build.gradle.kts`:
-```kotlin
-dependencies {
-    implementation("com.microsoft.onnxruntime:onnxruntime-android:latest")
-    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.7.3")
-    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.2")
-}
+cd mobile
+./gradlew assembleDebug
 ```
 
-## Hardware Optimization
-On the Pixel 9 Pro, the **Tensor G4** chip supports `NNAPI`. When initializing the ONNX Session in `TTSManager.kt`, ensure you add the `NNAPI` execution provider for 10x faster generation.
+Requires Android SDK with API 35 platform tools. The `debug.keystore` is pinned in the repo for CI build identity consistency — see `app/build.gradle.kts` for the rationale.
+
+## Dependencies
+
+Dependency versions are centralized in `gradle/libs.versions.toml`. To update a library version, edit the `[versions]` section — library and plugin references pick it up automatically.
+
+## Gateway
+
+The app connects to a Metanoia gateway server (default `192.168.122.2:8000`) for:
+- Bible API (chapters, interlinear, lexicon, search)
+- TTS (Kokoro neural, voice clone)
+- STT (Whisper transcription)
+- Nightly update checks (GitHub releases)
+
+Configure in Settings > Gateway Connection, or set `useGatewayBible = false` to fall back to direct web scraping for Bible text.

mobile/app/build.gradle.kts

@@ -1,7 +1,7 @@
 plugins {
-    id("com.android.application")
-    id("org.jetbrains.kotlin.android")
-    id("org.jetbrains.kotlin.plugin.compose")
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.compose)
 }
 
 android {
@@ -95,36 +95,36 @@ fun gitCommitCount(): Int = try {
 } catch (e: Exception) { 1 }
 
 dependencies {
-    implementation("androidx.core:core-ktx:1.15.0")
-    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.8.7")
-    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.8.7") // REQUIRED
-    implementation("androidx.activity:activity-compose:1.10.0")
-    implementation(platform("androidx.compose:compose-bom:2025.02.00"))
-    implementation("androidx.compose.ui:ui")
-    implementation("androidx.compose.ui:ui-graphics")
-    implementation("androidx.compose.ui:ui-tooling-preview")
-    implementation("androidx.compose.material3:material3")
-    implementation("androidx.compose.material:material-icons-extended")
-    implementation("androidx.navigation:navigation-compose:2.8.7")
-    implementation("androidx.core:core-splashscreen:1.0.1")
-    
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.lifecycle.runtime.ktx)
+    implementation(libs.androidx.lifecycle.viewmodel.compose)
+    implementation(libs.androidx.activity.compose)
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.compose.ui)
+    implementation(libs.androidx.compose.ui.graphics)
+    implementation(libs.androidx.compose.ui.tooling.preview)
+    implementation(libs.androidx.compose.material3)
+    implementation(libs.androidx.compose.material.icons.extended)
+    implementation(libs.androidx.navigation.compose)
+    implementation(libs.androidx.core.splashscreen)
+
     // --- CORE ENGINES ---
-    implementation("com.microsoft.onnxruntime:onnxruntime-mobile:1.18.0")
+    implementation(libs.onnxruntime.mobile)
 
     // --- UTILS ---
-    implementation("com.squareup.okhttp3:okhttp:4.12.0")
-    implementation("org.jsoup:jsoup:1.17.2")
-    
-    implementation("androidx.compose.ui:ui-text-google-fonts:1.7.8")
-    
-    testImplementation("junit:junit:4.13.2")
-    testImplementation("org.mockito:mockito-core:5.11.0")
-    testImplementation("org.mockito.kotlin:mockito-kotlin:5.2.1")
-    testImplementation("org.json:json:20240303")
-    androidTestImplementation("androidx.test.ext:junit:1.2.1")
-    androidTestImplementation("androidx.test.espresso:espresso-core:3.6.1")
-    androidTestImplementation(platform("androidx.compose:compose-bom:2025.02.00"))
-    androidTestImplementation("androidx.compose.ui:ui-test-junit4")
-    debugImplementation("androidx.compose.ui:ui-tooling")
-    debugImplementation("androidx.compose.ui:ui-test-manifest")
+    implementation(libs.okhttp)
+    implementation(libs.jsoup)
+
+    implementation(libs.androidx.compose.ui.text.google.fonts)
+
+    testImplementation(libs.junit)
+    testImplementation(libs.mockito.core)
+    testImplementation(libs.mockito.kotlin)
+    testImplementation(libs.org.json)
+    androidTestImplementation(libs.androidx.test.ext.junit)
+    androidTestImplementation(libs.androidx.test.espresso.core)
+    androidTestImplementation(platform(libs.androidx.compose.bom))
+    androidTestImplementation(libs.androidx.compose.ui.test.junit4)
+    debugImplementation(libs.androidx.compose.ui.tooling)
+    debugImplementation(libs.androidx.compose.ui.test.manifest)
 }

mobile/app/src/main/java/com/bytecats/metanoia/MainActivity.kt

@@ -16,6 +16,7 @@ import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
 import com.bytecats.metanoia.bible.DeepLink
 import com.bytecats.metanoia.ui.screens.*
+import com.bytecats.metanoia.ui.screens.settings.*
 import com.bytecats.metanoia.ui.theme.MetanoiaTheme
 import com.bytecats.metanoia.viewmodel.MainViewModel
 import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen