Implement iOS permissions, navigation improvements, and UI fixes

Add comprehensive iOS permission handling and enhance navigation UX:

iOS Permissions Setup:
- Configure Podfile with permission macros (PERMISSION_LOCATION, PERMISSION_CAMERA, PERMISSION_PHOTOS)
- Add camera and photo library usage descriptions to Info.plist
- Enable location, camera, and photos permissions for permission_handler plugin
- Clean rebuild of iOS dependencies with updated configuration

Navigation Enhancements:
- Implement Google Navigation dark mode with custom map styling
- Add loading overlay during navigation initialization with progress messages
- Fix navigation flow with proper session initialization and error handling
- Enable followMyLocation API for continuous driver location tracking
- Auto-recenter camera on driver location when navigation starts
- Add mounted checks to prevent unmounted widget errors

UI/UX Improvements:
- Fix layout overlapping issues between map, header, and footer
- Add dynamic padding (110px top/bottom) to accommodate navigation UI elements
- Reposition navigation buttons to prevent overlap with turn-by-turn instructions
- Wrap DeliveriesPage body with SafeArea for proper system UI handling
- Add loading states and disabled button behavior during navigation start

Technical Details:
- Enhanced error logging with debug messages for troubleshooting
- Implement retry logic for navigation session initialization (30 retries @ 100ms)
- Apply dark mode style with 500ms delay for proper map rendering
- Use CameraPerspective.tilted for optimal driving view
- Remove manual camera positioning in favor of native follow mode

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

lib/pages/deliveries_page.dart

@@ -70,7 +70,8 @@ class _DeliveriesPageState extends ConsumerState<DeliveriesPage> {
         title: Text(widget.routeName),
         elevation: 0,
       ),
-      body: deliveriesData.when(
+      body: SafeArea(
+        child: deliveriesData.when(
         data: (deliveries) {
           // Auto-scroll to first pending delivery when page loads or route changes
           if (_lastRouteFragmentId != widget.routeFragmentId) {
@@ -167,6 +168,7 @@ class _DeliveriesPageState extends ConsumerState<DeliveriesPage> {
           child: Text('Error: $error'),
         ),
       ),
+      ),
     );
   }
 
@@ -286,6 +288,7 @@ class UnifiedDeliveryListView extends StatelessWidget {
       child: ListView.builder(
         controller: scrollController,
         padding: const EdgeInsets.symmetric(vertical: 8),
+        physics: const AlwaysScrollableScrollPhysics(),
         itemCount: deliveries.length,
         itemBuilder: (context, index) {
           final delivery = deliveries[index];