feat(android): UI redesign — light web-matching theme, dark top bar + bottom nav (Phase 28.7)

android/plan.md

@@ -227,10 +227,32 @@ android/
       (`PORTAL_TILE_URL`, zoom 0–19) so it works over cellular away from the hotspot
 - [ ] Video playback (stream endpoint) — deferred
 
-### 28.7 — Polish + distribution ⬜ NOT STARTED
-**Depends on: 28.1–28.6 (whichever subset ships).**
+### 28.7 — UI redesign: match the mobile web UI ✅ DONE (2026-08-15)
+**Depends on: 28.1–28.6. Renumbers the old 28.7 (polish) to 28.8.**
 
-#### 28.7.1 — App polish
+#### 28.7.1 — Theme
+- [x] Light theme matching `static/yaris.css`: content bg `#f4f6fb`, white cards,
+      primary `#4e73df`, accent/error red `#e63946`, text-muted `#6c757d`
+- [x] App defaults to light (matches the web; the web has no dark mode)
+
+#### 28.7.2 — Chrome (top bar + bottom nav)
+- [x] Global dark top bar (`YarisHeader`): `#1c1c1e`, white italic "YARIS-OBD"
+      wordmark + red underline, status-bar aware
+- [x] Dark bottom `NavigationBar` (`#1c1c1e`, white active / 55% white inactive)
+      mirroring the web's `.mobile-bottom-nav`
+- [x] Removed the per-screen `YarisHeader` in favour of the one global top bar
+- [x] Trip replay screen gets the same dark top bar
+
+#### 28.7.3 — Component polish (follow-up)
+- [ ] Card shadows (`shadow-sm`) + white card surfaces
+- [ ] Blue primary buttons (`btn-primary` #4e73df)
+- [ ] FontAwesome-style icons where they map to the web nav
+- [ ] Page titles (`h3 fw-bold`) at the top of each screen
+
+### 28.8 — Polish + distribution ⬜ NOT STARTED
+**Depends on: 28.1–28.7 (whichever subset ships).**
+
+#### 28.8.1 — App polish
 - [ ] App icon (adaptive icon: foreground + background layers)
 - [ ] Splash screen (Android 12+ SplashScreen API)
 - [ ] Dark theme verified on all screens (default, car-friendly)
@@ -238,7 +260,7 @@ android/
 - [ ] Accessibility: content descriptions on icons, reasonable touch targets (≥48dp)
 - [ ] Commit: `feat: app polish`
 
-#### 28.7.2 — Build + distribution
+#### 28.8.2 — Build + distribution
 - [ ] Release build signing key (keystore generated, not committed)
 - [ ] ProGuard/R8 rules verified (Retrofit, OkHttp, Coil, MapLibre keep rules)
 - [ ] APK output: `app/build/outputs/apk/release/app-release.apk`