Initial commit: BountyBoard Android client

Native Kotlin + Jetpack Compose (Material 3) client for the BountyBoard
platform. Cookie-session + CSRF auth with a configurable base URL, the full
role-based feature set (admin / consultant / developer), local + OIDC SSO
sign-in, and background push notifications (WorkManager poll) for alerts and
messages. Bundles the app's editorial "ledger" design system and the original
Fraunces / Schibsted Grotesk / Spline Sans Mono typefaces.

Includes a prebuilt debug APK (BountyBoard-debug.apk) for side-loading.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,14 @@
+*.iml
+.gradle
+/local.properties
+/.idea
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
+/app/build
+/app/release
+*.apk
+*.aab