feat(android)!: replace the Capacitor wrapper with a native Kotlin/Compose app

Fresh Kotlin 2.2 + Jetpack Compose app at feature parity with web/
(game logic, settings contract, voice semantics ported one-to-one with
twinned tests; 104 unit + 9 instrumentation tests). Fully offline:
VIBRATE is the only permission; Media3's ACCESS_NETWORK_STATE is
stripped. Voice clips mount from web/static/audio at build time.

Same applicationId, signing env contract, and Play alpha track;
versionCode 7 / 0.2.0. CI Android job is Gradle-only (lint, test,
debug + R8 release APK) and the release workflow fails fast on an
unbumped versionCode.

BREAKING CHANGE: WebView localStorage (settings, in-progress round)
is not migrated; wrapper users start clean.

web/README.md

@@ -7,8 +7,9 @@ No runtime TTS or server required.
 
 Live: [tiennm99.github.io/loto](https://tiennm99.github.io/loto)
 
-Android port: [`android/`](../android) — a Capacitor wrapper that bundles this
-app into a fully-offline APK.
+Android port: [`android/`](../android) — a native Kotlin + Jetpack Compose
+app at feature parity with this one (this app is the behavioral spec). It
+mounts `static/audio/` straight into its APK, so the voice clips exist once.
 
 ---
 

web/docs/deployment-guide.md

@@ -145,11 +145,11 @@ One workflow, `.github/workflows/ci.yml`, covers PRs and pushes to `main`:
 - **`deploy-pages`** — canonical deploy; publishes `web-build-gh`.
 - **`deploy-firebase`** / **`preview-firebase`** — Firebase live channel on
   `main`, preview channel on same-repo PRs; both consume `web-build`.
-- **`android-debug`** — syncs `web-build` into the Capacitor project and
-  assembles an unsigned APK.
+- **`android-debug`** — independent of the web build: lints, tests and
+  assembles the native app's unsigned APK straight from the checkout.
 
-Tags run `.github/workflows/android-release.yml` instead, which builds the
-web app itself because no `ci` run exists to take artifacts from.
+Tags run `.github/workflows/android-release.yml` instead, which builds
+standalone because no `ci` run exists to take artifacts from.
 
 ## Performance Checklist