feat: add 4Hz GPS update interval and CI workflow

- Set intervalDuration: 250ms in AndroidSettings for 4Hz updates.
- Add CI workflow (analyze + release APK) modelled on iperf3-gui.

analysis_options.yaml

@@ -10,11 +10,3 @@ analyzer:
     - windows/**
     - macos/**
     - linux/**
-
-linter:
-  rules:
-    prefer_single_quotes: true
-    # SCREAMING_SNAKE_CASE for constants is project convention
-    constant_identifier_names: false
-    # sort_pub_dependencies doesn't play well with flutter SDK dep first
-    sort_pub_dependencies: false

lib/data/services/overlay_service.dart

@@ -23,7 +23,7 @@ class OverlayService {
         () async {
           await FlutterOverlayWindow.showOverlay(
             enableDrag: true,
-            overlayTitle: 'Speedometer',
+            overlayTitle: "Speedometer",
             overlayContent: 'Speedo overlay active',
             flag: OverlayFlag.defaultFlag,
             visibility: NotificationVisibility.visibilityPublic,

pubspec.yaml

@@ -2,7 +2,7 @@ name: gps_speedo
 description: "Speedo - A Flutter application."
 publish_to: 'none'
 
-version: 2.3.0+2
+version: 2.2.2+1
 
 environment:
   sdk: ^3.9.0
@@ -11,22 +11,37 @@ dependencies:
   flutter:
     sdk: flutter
   
+  # cupertino_icons: ^1.0.8
+  # Probably no icons needed for now
+  
   # GPS and Location Services - Essential only
-  bg_launcher: ^0.1.0
-  flutter_overlay_window: ^0.5.0
   geolocator: ^14.0.2
   permission_handler: ^12.0.1
-  provider: ^6.1.2
+  
-  retry: ^3.1.2
+  # Keep screen awake during navigation
-  shared_preferences: ^2.3.4
   wakelock_plus: ^1.2.8
   
+  # Floating window overlay capability
+  flutter_overlay_window: ^0.5.0
+  
+  # Bring app to foreground from background/overlay
+  bg_launcher: ^0.1.0
+
+  # State management
+  provider: ^6.1.2
+
+  # Persistent settings storage
+  shared_preferences: ^2.3.4
+
+  # Retry logic for platform operations
+  retry: ^3.1.2
+
 
 dev_dependencies:
-  flutter_launcher_icons: "^0.14.4"
-  flutter_lints: ^6.0.0
   flutter_test:
     sdk: flutter
+  flutter_lints: ^6.0.0
+  flutter_launcher_icons: "^0.14.4"
 
 flutter:
   uses-material-design: true