v2.0.0-b1: clean architecture refactor, 5-tab nav, expanded power-user surface

Architecture spine: core/dispatchers (DispatcherProvider) + core/result
(Outcome + AppError) + Konsist suite enforcing layer purity (domain
Android-free, no Dispatchers outside core/, repository contract).
Four UseCases (Install / Synthesize / RefreshCatalog / RecommendTier).
DeviceTierEstimator and UpdateChannel moved into their proper layers.

Navigation: NavigationBar with five tabs (Library / Browse / Studio /
Activity / Settings) replaces single-stack Library entry. Each tab keeps
its own back stack.

New surfaces:
- Activity tab: Downloads, Extractions, Live Generations (RTF telemetry
  via SynthesisTelemetryRepository), Request log, Cache stats.
- Studio tab: entry point for the Playground knobs + voice profiles +
  WAV export + SSML preprocessor (subset: prosody, break, say-as).
- Speak Selection: ACTION_PROCESS_TEXT activity for system-wide TTS.
- HayaiTtsNudge: foreground "speaking" notification with Stop action.
- UpdateCheckWorker: 12h periodic GitHub Releases poll.
- AltRuntime: pluggable seam for non-sherpa families.
- SherpaTtsRuntime.synthesizeBlend: Kokoro multi-speaker mixing.

Catalog: tools/catalog/build_catalog.py infers Piper voice gender from a
hand-curated table; Speaker carries genderConfidence (declared / inferred /
unknown) so Browse filters have real data.

Filters: domain-side BrowseFilters with seven dimensions (gender,
languages, families, tiers, licenses, sample-rate buckets, size buckets)
plus multi-speaker, available-only, requireKnownGender toggles. Loosen()
helper for the "no results" CTA.

Database: Room v3 -> v4. Three new tables: voice_profiles, pronunciations,
app_routes. MIGRATION_3_4 hand-written, empty on first run.

Library: family-tinted accent border on cards. Drag reorder no longer
collapses on a single fast frame. Dead 4th FAB button, hit-test bleed,
20-bar waveform mismatch, orphaned Help route, dead AnimatedVisibility,
JVM 17/21 toolchain skew all fixed.

Docs: CLAUDE.md (build + conventions) + docs/ARCHITECTURE.md (12-section
contract: layers, boundaries, DI, threading, errors, naming, testing,
forbidden patterns, finished migration table).

Tests: OutcomeTest (5 cases), BrowseFiltersTest (6 cases), Konsist
ArchitectureTest (7 rules). All green on testDebugUnitTest.

Version: 1.2.0-b1 -> 2.0.0-b1 (versionCode 200).

Author: Ahmed Mohamed

CLAUDE.md

@@ -0,0 +1,61 @@
+# CLAUDE.md — HayaiTTS
+
+Quick-reference for working in this repo. Detailed history and architecture
+live in [`ONBOARDING.md`](ONBOARDING.md) and
+[`docs/ARCHITECTURE.md`](docs/ARCHITECTURE.md).
+
+## Build
+
+```powershell
+.\gradlew assembleDebug -Dorg.gradle.java.home="C:\Program Files\Android\Android Studio\jbr"
+adb install -r app/build/outputs/apk/debug/app-debug.apk
+```
+
+JDK 21 (JBR shipped with Android Studio). Gradle toolchain is pinned, so any
+JDK 21 install works. Lint clean — keep it that way. `:app:test` runs the
+Konsist architecture suite; treat failures as build errors, not warnings.
+
+## Repo orientation
+
+- `app/` — single Gradle module, all production code.
+- `catalog/v1/models.json` — voice manifest, regenerated weekly by
+  [`tools/catalog/build_catalog.py`](tools/catalog/build_catalog.py) via the
+  [`catalog-refresh`](.github/workflows/catalog-refresh.yml) workflow.
+- `docs/ARCHITECTURE.md` — layering, naming, threading, error handling,
+  testing, forbidden patterns. **Read before adding a feature.**
+- `ONBOARDING.md` — build phase history, signing, CI architecture,
+  on-device smoke test.
+
+## Architecture in one paragraph
+
+UI → UseCase → Repository → Data source → sherpa-onnx runtime. Dependencies
+point one way. `domain/` is pure Kotlin (no `android.*`, no `androidx.*`
+except `androidx.annotation`); `data/` may import `domain` but not `ui`;
+`ui/` may import both. Threading goes through the injected
+[`DispatcherProvider`](app/src/main/java/dev/ahmedmohamed/hayaitts/core/dispatchers/DispatcherProvider.kt),
+not `Dispatchers.*` directly. Repository returns flow through
+[`Outcome<T>`](app/src/main/java/dev/ahmedmohamed/hayaitts/core/result/Outcome.kt)
+rather than thrown exceptions. Konsist tests in
+`app/src/test/java/.../core/konsist/` enforce these rules — break a rule and
+CI goes red.
+
+## Conventions
+
+- No `Co-Authored-By: Claude` trailers on commits, no robot emoji in PR
+  bodies. Just write the change.
+- Strings ship in all 10 supported locales. CI diffs the key sets across
+  `res/values-*/strings.xml`.
+- Voice teal (`#0E7C86`) is the brand color. Don't override the M3 Expressive
+  scheme; extend it.
+- For UI changes attach a screenshot or short recording — Compose previews
+  don't capture motion/haptics, which is most of where the UX lives.
+
+## Forbidden
+
+- Importing `kotlinx.coroutines.Dispatchers` outside `core/` (Workers and
+  Receivers excepted — they are framework-constructed).
+- Returning Room `*Entity` types from a `domain/` repo or referencing them
+  from a `@Composable`.
+- Throwing exceptions from a repository or use case — return `Outcome.Failure`.
+- Adding a `build.gradle` version literal — every version lives in
+  `gradle/libs.versions.toml`.

app/build.gradle.kts

@@ -15,7 +15,7 @@ plugins {
 kotlin {
     jvmToolchain(21)
     compilerOptions {
-        jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17)
+        jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_21)
         freeCompilerArgs.addAll(
             "-opt-in=androidx.compose.material3.ExperimentalMaterial3Api",
             "-opt-in=androidx.compose.material3.ExperimentalMaterial3ExpressiveApi",
@@ -31,8 +31,8 @@ android {
         applicationId = "dev.ahmedmohamed.hayaitts"
         minSdk = 26
         targetSdk = 36
-        versionCode = 120
-        versionName = "1.2.0-b1"
+        versionCode = 200
+        versionName = "2.0.0-b1"
 
         // Room schema export. KSP picks this up via the `room` argument and
         // writes JSON snapshots of each entity into app/schemas/. Schemas are
@@ -109,8 +109,8 @@ android {
     }
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_17
-        targetCompatibility = JavaVersion.VERSION_17
+        sourceCompatibility = JavaVersion.VERSION_21
+        targetCompatibility = JavaVersion.VERSION_21
     }
 
     // Note: kotlinOptions DSL was deprecated in Kotlin 2.2 — switched to the
@@ -207,6 +207,7 @@ dependencies {
     testImplementation(libs.junit4)
     testImplementation(libs.coroutines.test)
     testImplementation(libs.androidx.test.core)
+    testImplementation(libs.konsist)
 
     androidTestImplementation(libs.androidx.test.ext.junit)
     androidTestImplementation(libs.androidx.test.runner)