docs: make Android native app the primary target

docs/ROADMAP.md

@@ -18,7 +18,7 @@ Goal: empty but runnable monorepo.
 
 Deliverables:
 - pnpm workspace
-- `apps/mobile` Vite React PWA
+- `apps/mobile` Vite React app with Capacitor Android target and PWA fallback
 - `apps/companion` Fastify server
 - shared TypeScript package for event/API schemas
 - basic app shell with bottom nav
@@ -66,10 +66,10 @@ Deliverables:
 Goal: close phone and get told when done.
 
 Deliverables:
-- PWA service worker
-- Web Push subscription management
+- Native Android push path or ntfy/Web Push fallback
+- PWA service worker fallback
 - notification provider abstraction
-- ntfy fallback
+- notification permission onboarding
 - completion/failure/approval notifications
 
 ## Phase 6 — Cron + Approvals
@@ -102,11 +102,13 @@ Goal: feels native.
 Deliverables:
 - refined Happy-inspired UI
 - animations/microinteractions
+- Capacitor Android build pipeline
 - adaptive icons/splash
+- native status/navigation bars
 - share target
 - haptics
 - offline shell polish
-- optional Capacitor wrapper evaluation
+- APK release/signing flow
 
 ## Phase 9 — Deep Hermes Integration