Refresh the Flutter snapshot: UI-01 through UI-09, plus a fresh installable APK

Full UI redesign pass complete: persistent tab shell with an always-visible
background map, Modern Professional Dark theme, monochrome dark map tiles,
offline skeleton map, a shared GlassPanel/FloatingPill component kit,
customizable HUD telemetry widgets, and the Map HUD / Plan & Route Planning /
Rides History screen rebuilds. 374 tests passing, up from 316.

The APK is a fresh release build (debug-signed, no release signing config
exists yet).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012Xki7YAcc2TiN2PRZJ2tXr

rippr-flutter-src/test/map_connectivity_test.dart

@@ -0,0 +1,116 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:rippr/src/tiles/map_connectivity.dart';
+
+/// UI-02: exercises the failure-count/threshold/probe logic with a fake probe -- no
+/// real network -- mirroring V3-11's `tile_downloader_test.dart` pattern of injecting
+/// fake fetch outcomes rather than hitting a real tile host from a test.
+void main() {
+  late bool probeResult;
+  late int probeCalls;
+  late MapConnectivityState state;
+
+  setUp(() {
+    probeResult = false;
+    probeCalls = 0;
+    state = MapConnectivityState(
+      probe: () async {
+        probeCalls++;
+        return probeResult;
+      },
+      probeInterval: const Duration(milliseconds: 20),
+    );
+  });
+
+  tearDown(() {
+    state.dispose();
+  });
+
+  test('starts in live mode', () {
+    expect(state.skeletonMode, isFalse);
+  });
+
+  test('fewer than the threshold of failures stays live', () {
+    state.reportFailure();
+    state.reportFailure();
+    expect(state.skeletonMode, isFalse);
+  });
+
+  test('reaching the threshold of consecutive failures switches to skeleton mode', () {
+    for (var i = 0; i < skeletonFailureThreshold; i++) {
+      state.reportFailure();
+    }
+    expect(state.skeletonMode, isTrue);
+  });
+
+  test('a success before the threshold resets the failure count', () {
+    state.reportFailure();
+    state.reportFailure();
+    state.reportSuccess();
+    state.reportFailure();
+    state.reportFailure();
+    expect(state.skeletonMode, isFalse,
+        reason: 'the success should have reset the run -- two more failures is not '
+            'the same as four in a row');
+  });
+
+  test('notifies listeners exactly when skeletonMode actually changes', () {
+    var notifications = 0;
+    state.addListener(() => notifications++);
+
+    state.reportFailure();
+    state.reportFailure();
+    expect(notifications, 0, reason: 'still below threshold -- no state change yet');
+
+    state.reportFailure();
+    expect(notifications, 1);
+    expect(state.skeletonMode, isTrue);
+  });
+
+  test('a single success while already in skeleton mode recovers immediately', () {
+    for (var i = 0; i < skeletonFailureThreshold; i++) {
+      state.reportFailure();
+    }
+    expect(state.skeletonMode, isTrue);
+
+    state.reportSuccess();
+    expect(state.skeletonMode, isFalse);
+  });
+
+  test('further failures are ignored once already in skeleton mode', () {
+    for (var i = 0; i < skeletonFailureThreshold; i++) {
+      state.reportFailure();
+    }
+    var notifications = 0;
+    state.addListener(() => notifications++);
+
+    // Recovery is the probe loop's job from here -- more failure reports (e.g. from a
+    // TileLayer that hadn't yet unmounted) must not do anything further.
+    state.reportFailure();
+    state.reportFailure();
+
+    expect(notifications, 0);
+    expect(state.skeletonMode, isTrue);
+  });
+
+  test('the probe loop recovers automatically once it starts succeeding', () async {
+    for (var i = 0; i < skeletonFailureThreshold; i++) {
+      state.reportFailure();
+    }
+    expect(state.skeletonMode, isTrue);
+
+    probeResult = true;
+    // Give the periodic probe timer a couple of intervals to fire.
+    await Future<void>.delayed(const Duration(milliseconds: 60));
+
+    expect(state.skeletonMode, isFalse);
+    expect(probeCalls, greaterThan(0));
+  });
+
+  test('the probe loop does not run while already live', () async {
+    await Future<void>.delayed(const Duration(milliseconds: 60));
+    expect(probeCalls, 0,
+        reason: 'a TileLayer that is live and working generates its own fetch '
+            'reports -- a periodic probe on top of that would be exactly the '
+            'excess-request behaviour this ticket exists to avoid');
+  });
+}