Merge master branch improvements into dev/floating-window-wip

Resolved conflicts:
- CLAUDE.md: Updated documentation to match master branch structure
- main.dart: Hybrid overlay sizing - proportional with reasonable limits (280-400w, 140-300h)

This brings the layout improvements from master (better flex ratios and sizing)
into the advanced floating window development branch.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

CLAUDE.md

@@ -33,17 +33,21 @@ Permissions: Location services + SYSTEM_ALERT_WINDOW for overlay functionality
 
 ## Recent Updates (v2.1.0)
 
-### ✅ Completed Features
+### ✅ Completed Features (Master Branch - Stable)
 - [x] **Split Decimal Display**: Main speed prominent with smaller, faded decimal fraction for better readability
 - [x] **Optimized Content Sizing**: Maximized readability with improved responsive layout and flex ratios
+- [x] **Basic Floating Window**: Simple overlay with "GPS SPEEDO" text and close button (stable implementation)
+- [x] **Navigation Icon Trigger**: Tap compass/navigation area to launch floating window overlay
+- [x] **Multiple Close Options**: Overlay close button and long-press navigation area for easy dismissal
+- [x] **Android System Integration**: SYSTEM_ALERT_WINDOW permissions and foreground service configuration
 
-### 🚧 Work in Progress Features (Seriously WIP - Dev Branch)
-- [ ] **Floating Window Overlay**: System-level overlay window - basic functionality works but seriously buggy
+### 🚧 Work in Progress Features (dev/floating-window-wip Branch - Seriously Buggy)
+- [ ] **Advanced Floating Window Overlay**: System-level overlay with live GPS data - basic functionality works but seriously buggy
   - GPS data synchronization implemented but unreliable
   - Theme/unit sync between main app and overlay works partially
   - Proportional sizing and positioning needs major refinement
   - Close button functionality works but overlay behavior inconsistent
-  - Android SYSTEM_ALERT_WINDOW permissions configured
+  - Performance may impact main app, needs optimization
 
 ### Previous Updates (v1.1)
 - [x] **Portrait/Landscape Support**: Automatic orientation detection implemented  
@@ -52,17 +56,19 @@ Permissions: Location services + SYSTEM_ALERT_WINDOW for overlay functionality
 
 ## TODO - Future Improvements
 
-### Known Issues (Dev Branch - Floating Window WIP)
+### Known Issues
+
+**Master Branch (v2.1.0 - Stable):**
+- [ ] **Dependency Updates**: Update packages to latest compatible versions
+- [ ] **Orientation Override**: Fix auto-rotate to work regardless of system toggle status
+
+**Dev Branch (floating-window-wip - Seriously Buggy):**
 - [ ] **Floating Window Reliability**: Overlay behavior inconsistent across different devices and Android versions
 - [ ] **GPS Data Sync**: Real-time GPS synchronization between main app and overlay unreliable
 - [ ] **Theme/Unit Sync**: Setting synchronization works partially but not consistently
 - [ ] **Overlay Positioning**: Poor positioning stability, sizing calculations need major work
 - [ ] **Performance**: Overlay may impact main app performance, needs optimization
 
-### Critical Issues
-- [ ] **Dependency Updates**: Update packages to latest compatible versions
-- [ ] **Orientation Override**: Fix auto-rotate to work regardless of system toggle status
-
 ### UI/UX Enhancements
 - [ ] **Background Customization**: Custom background color selection
 - [ ] **Interface Rearrangement**: User-defined layout customization
@@ -85,6 +91,11 @@ Permissions: Location services + SYSTEM_ALERT_WINDOW for overlay functionality
 - **Memory**: Project uses automatic Claude Code memory - this file for major decisions only
 - **Git**: Active repository at `https://github.com/mikkelimatlock/gps_speedo`
 
+## Branch Strategy
+- **master**: Stable releases, ready for production APK builds
+- **dev/floating-window-wip**: Advanced floating window development (seriously buggy, not for release)
+- Tagged releases: v2.1.0 on master branch contains stable basic floating window
+
 ## Code Patterns to Maintain
 - Provider pattern for state management
 - Separate widgets for reusability  

lib/main.dart

@@ -191,7 +191,7 @@ class _SpeedometerScreenState extends State<SpeedometerScreen> with WidgetsBindi
         'screenHeight': screenSize.height,
       });
 
-      // Show the overlay with proportional sizing
+      // Show the overlay with hybrid sizing - proportional but with reasonable limits
       await FlutterOverlayWindow.showOverlay(
         enableDrag: true,
         overlayTitle: "GPS Speedometer",
@@ -199,8 +199,9 @@ class _SpeedometerScreenState extends State<SpeedometerScreen> with WidgetsBindi
         flag: OverlayFlag.defaultFlag,
         visibility: NotificationVisibility.visibilityPublic,
         positionGravity: PositionGravity.none,
-        width: overlayWidth,
-        height: overlayHeight,
+        // Use proportional sizing with minimum reasonable dimensions
+        width: overlayWidth.clamp(280, 400),
+        height: overlayHeight.clamp(140, 300),
       );
     } catch (e) {
       // Silent error handling - floating window issues shouldn't crash main app
@@ -296,7 +297,7 @@ class _SpeedometerScreenState extends State<SpeedometerScreen> with WidgetsBindi
       children: [
         // Speed area - takes most space, precise tap targets on text only
         Expanded(
-          flex: 7,
+          flex: 65,
           child: Container(
             width: double.infinity,
             color: Colors.transparent,
@@ -351,7 +352,7 @@ class _SpeedometerScreenState extends State<SpeedometerScreen> with WidgetsBindi
         ),
         // Compass area - compact but fully tappable for floating window
         Expanded(
-          flex: 3,
+          flex: 32,
           child: GestureDetector(
             onTap: _showFloatingWindow, // Tap navigation icon to show floating window
             onLongPress: _closeFloatingWindow, // Long press to close floating window