Add Android OAuth support and fix map camera crash

- Add appAuthRedirectScheme manifest placeholder for flutter_appauth on Android
- Fix Google Maps camera animation crash on Android ("No valid view found")
- Add safety checks and retry mechanism for camera initialization
- Make action buttons always visible regardless of delivery selection

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

android/app/build.gradle.kts

@@ -24,10 +24,13 @@ android {
         applicationId = "com.goutezplanb.planb_logistic"
         // You can update the following values to match your application needs.
         // For more information, see: https://flutter.dev/to/review-gradle-config.
-        minSdk = 23  // Required for Google Navigation Flutter
+        minSdk = flutter.minSdkVersion  // Required for Google Navigation Flutter
         targetSdk = flutter.targetSdkVersion
         versionCode = flutter.versionCode
         versionName = flutter.versionName
+
+        // OAuth redirect scheme for flutter_appauth
+        manifestPlaceholders["appAuthRedirectScheme"] = "com.goutezplanb.delivery"
     }
 
     packagingOptions {

lib/components/dark_mode_map.dart

@@ -312,7 +312,7 @@ class _DarkModeMapComponentState extends State<DarkModeMapComponent> {
 
     // Calculate dynamic padding for bottom button bar
     final topPadding = 0.0;
-    final bottomPadding = widget.selectedDelivery != null ? 110.0 : 0.0;
+    final bottomPadding = 110.0;
 
     return Stack(
       children: [
@@ -327,10 +327,34 @@ class _DarkModeMapComponentState extends State<DarkModeMapComponent> {
               _navigationController = controller;
               // Apply dark mode style with a small delay to ensure map is ready
               await Future.delayed(const Duration(milliseconds: 500));
+
+              // Safety check: ensure widget is still mounted before proceeding
+              if (!mounted) return;
+
               await _applyDarkModeStyle();
-              controller.animateCamera(
+
-                CameraUpdate.newLatLngZoom(initialPosition, 12),
+              // Wrap camera animation in try-catch to handle "No valid view found" errors
-              );
+              // This can happen on Android when the view isn't fully ready
+              try {
+                if (mounted && _navigationController != null) {
+                  await controller.animateCamera(
+                    CameraUpdate.newLatLngZoom(initialPosition, 12),
+                  );
+                }
+              } catch (e) {
+                debugPrint('Camera animation error (view may not be ready): $e');
+                // Retry once after a longer delay
+                await Future.delayed(const Duration(milliseconds: 1000));
+                if (mounted && _navigationController != null) {
+                  try {
+                    await controller.animateCamera(
+                      CameraUpdate.newLatLngZoom(initialPosition, 12),
+                    );
+                  } catch (e2) {
+                    debugPrint('Camera animation retry failed: $e2');
+                  }
+                }
+              }
             },
             initialCameraPosition: CameraPosition(
               target: initialPosition,
@@ -338,9 +362,8 @@ class _DarkModeMapComponentState extends State<DarkModeMapComponent> {
             ),
           ),
         ),
-        // Bottom action button bar
+        // Bottom action button bar - 4 equal-width buttons (always visible)
-        if (widget.selectedDelivery != null)
+        Positioned(
-          Positioned(
             bottom: 0,
             left: 0,
             right: 0,
@@ -361,55 +384,49 @@ class _DarkModeMapComponentState extends State<DarkModeMapComponent> {
               ),
               child: Row(
                 children: [
-                  // Recenter button
+                  // Start button
                   Expanded(
                     child: _buildBottomActionButton(
-                      label: 'Recenter',
+                      label: _isNavigating ? 'Stop' : 'Start',
-                      icon: Icons.location_on,
+                      icon: _isNavigating ? Icons.stop : Icons.navigation,
-                      onPressed: _recenterMap,
+                      onPressed: _isStartingNavigation || _isInitializing || (widget.selectedDelivery == null && !_isNavigating)
+                          ? null
+                          : (_isNavigating ? _stopNavigation : _startNavigation),
+                      isDanger: _isNavigating,
                     ),
                   ),
-                  const SizedBox(width: 12),
+                  const SizedBox(width: 8),
-                  // Mark Complete button (if not already delivered)
+                  // Photo button
-                  if (!widget.selectedDelivery!.delivered)
+                  Expanded(
-                    Expanded(
+                    child: _buildBottomActionButton(
-                      child: _buildBottomActionButton(
+                      label: 'Photo',
-                        label: 'Mark Complete',
+                      icon: Icons.camera_alt,
-                        icon: Icons.check_circle,
+                      onPressed: () => widget.onAction?.call('photo'),
-                        onPressed: () => widget.onAction?.call('complete'),
-                        isPrimary: true,
-                      ),
                     ),
-                  if (widget.selectedDelivery!.delivered)
+                  ),
-                    Expanded(
+                  const SizedBox(width: 8),
-                      child: _buildBottomActionButton(
+                  // Note button
-                        label: _isInitializing ? 'Initializing...' : 'Start Navigation',
+                  Expanded(
-                        icon: Icons.directions,
+                    child: _buildBottomActionButton(
-                        onPressed: _isInitializing ? null : _startNavigation,
+                      label: 'Note',
-                        isPrimary: true,
+                      icon: Icons.note_add,
-                      ),
+                      onPressed: () => widget.onAction?.call('note'),
                     ),
-                  if (!_isNavigating && !widget.selectedDelivery!.delivered)
+                  ),
-                    const SizedBox(width: 12),
+                  const SizedBox(width: 8),
-                  if (!_isNavigating && !widget.selectedDelivery!.delivered)
+                  // Completed button
-                    Expanded(
+                  Expanded(
-                      child: _buildBottomActionButton(
+                    child: _buildBottomActionButton(
-                        label: _isStartingNavigation || _isInitializing ? 'Loading...' : 'Navigate',
+                      label: widget.selectedDelivery?.delivered == true ? 'Undo' : 'Completed',
-                        icon: Icons.directions,
+                      icon: widget.selectedDelivery?.delivered == true ? Icons.undo : Icons.check_circle,
-                        onPressed: _isStartingNavigation || _isInitializing ? null : _startNavigation,
+                      onPressed: widget.selectedDelivery != null
-                      ),
+                          ? () => widget.onAction?.call(
-                    ),
+                                widget.selectedDelivery!.delivered ? 'uncomplete' : 'complete',
-                  if (_isNavigating)
+                              )
-                    const SizedBox(width: 12),
+                          : null,
-                  if (_isNavigating)
+                      isPrimary: widget.selectedDelivery != null && !widget.selectedDelivery!.delivered,
-                    Expanded(
-                      child: _buildBottomActionButton(
-                        label: 'Stop',
-                        icon: Icons.stop,
-                        onPressed: _stopNavigation,
-                        isDanger: true,
-                      ),
                     ),
+                  ),
                 ],
               ),
             ),
@@ -486,12 +503,12 @@ class _DarkModeMapComponentState extends State<DarkModeMapComponent> {
     Color textColor = Colors.white;
 
     if (isDanger) {
-      backgroundColor = Colors.red.shade600;
+      backgroundColor = SvrntyColors.crimsonRed;
     } else if (isPrimary) {
       backgroundColor = SvrntyColors.crimsonRed;
     } else {
-      backgroundColor = Theme.of(context).colorScheme.surfaceContainerHighest;
+      // Use the same slateGray as delivery list badges
-      textColor = Theme.of(context).colorScheme.onSurface;
+      backgroundColor = SvrntyColors.slateGray;
     }
 
     // Reduce opacity when disabled
@@ -507,8 +524,8 @@ class _DarkModeMapComponentState extends State<DarkModeMapComponent> {
         borderRadius: BorderRadius.circular(8),
         child: Padding(
           padding: const EdgeInsets.symmetric(
-            horizontal: 12,
+            horizontal: 14,
-            vertical: 12,
+            vertical: 14,
           ),
           child: Row(
             mainAxisAlignment: MainAxisAlignment.center,
@@ -517,15 +534,15 @@ class _DarkModeMapComponentState extends State<DarkModeMapComponent> {
               Icon(
                 icon,
                 color: textColor,
-                size: 18,
+                size: 24,
               ),
-              const SizedBox(width: 6),
+              const SizedBox(width: 8),
               Text(
                 label,
                 style: TextStyle(
                   color: textColor,
-                  fontWeight: FontWeight.w500,
+                  fontWeight: FontWeight.w600,
-                  fontSize: 14,
+                  fontSize: 18,
                 ),
               ),
             ],