fix: unmaximize window before entering fullscreen on Windows

lib/screens/video_player_screen.dart

@@ -26,6 +26,7 @@ import '../models/companion_remote/remote_command_type.dart';
 import '../providers/companion_remote_provider.dart';
 import '../services/companion_remote/companion_remote_receiver.dart';
 import '../services/macos_window_service.dart';
+import '../services/fullscreen_state_manager.dart';
 import '../services/discord_rpc_service.dart';
 import '../services/episode_navigation_service.dart';
 import '../services/media_controls_manager.dart';
@@ -1270,16 +1271,7 @@ class VideoPlayerScreenState extends State<VideoPlayerScreen> with WidgetsBindin
 
   Future<void> _toggleFullscreen() async {
     if (PlatformDetector.isMobile(context)) return;
-    final isCurrentlyFullscreen = await windowManager.isFullScreen();
-    if (Platform.isMacOS) {
-      if (isCurrentlyFullscreen) {
-        await MacOSWindowService.exitFullscreen();
-      } else {
-        await MacOSWindowService.enterFullscreen();
-      }
-    } else {
-      await windowManager.setFullScreen(!isCurrentlyFullscreen);
-    }
+    await FullscreenStateManager().toggleFullscreen();
   }
 
   /// Exit fullscreen before leaving the player (Windows/Linux only).
@@ -1289,7 +1281,7 @@ class VideoPlayerScreenState extends State<VideoPlayerScreen> with WidgetsBindin
     if (Platform.isWindows || Platform.isLinux) {
       final isFullscreen = await windowManager.isFullScreen();
       if (isFullscreen) {
-        await windowManager.setFullScreen(false);
+        await FullscreenStateManager().exitFullscreen();
         await Future.delayed(const Duration(milliseconds: 100));
       }
     }

lib/services/fullscreen_state_manager.dart

@@ -1,6 +1,7 @@
 import 'dart:io' show Platform;
 import 'package:flutter/foundation.dart';
 import 'package:window_manager/window_manager.dart';
+import 'macos_window_service.dart';
 
 /// Global manager for tracking fullscreen state across the app
 class FullscreenStateManager extends ChangeNotifier with WindowListener {
@@ -12,6 +13,7 @@ class FullscreenStateManager extends ChangeNotifier with WindowListener {
 
   bool _isFullscreen = false;
   bool _isListening = false;
+  bool _wasMaximized = false;
 
   bool get isFullscreen => _isFullscreen;
 
@@ -23,6 +25,46 @@ class FullscreenStateManager extends ChangeNotifier with WindowListener {
     }
   }
 
+  /// Toggle fullscreen state, handling maximized-to-fullscreen transition on Windows/Linux
+  Future<void> toggleFullscreen() async {
+    final isCurrentlyFullscreen = await windowManager.isFullScreen();
+
+    if (Platform.isMacOS) {
+      if (isCurrentlyFullscreen) {
+        await MacOSWindowService.exitFullscreen();
+      } else {
+        await MacOSWindowService.enterFullscreen();
+      }
+    } else {
+      if (isCurrentlyFullscreen) {
+        await windowManager.setFullScreen(false);
+        if (_wasMaximized) {
+          await windowManager.maximize();
+          _wasMaximized = false;
+        }
+      } else {
+        _wasMaximized = await windowManager.isMaximized();
+        if (_wasMaximized) {
+          await windowManager.unmaximize();
+        }
+        await windowManager.setFullScreen(true);
+      }
+    }
+  }
+
+  /// Exit fullscreen, restoring maximized state if needed
+  Future<void> exitFullscreen() async {
+    if (Platform.isMacOS) {
+      await MacOSWindowService.exitFullscreen();
+    } else {
+      await windowManager.setFullScreen(false);
+      if (_wasMaximized) {
+        await windowManager.maximize();
+        _wasMaximized = false;
+      }
+    }
+  }
+
   /// Start monitoring fullscreen state
   void startMonitoring() {
     if (!_shouldMonitor() || _isListening) return;

lib/widgets/video_controls/video_controls.dart

@@ -15,6 +15,7 @@ import 'package:flutter/services.dart'
         KeyEvent,
         KeyDownEvent,
         HardwareKeyboard;
+import '../../services/fullscreen_state_manager.dart';
 import '../../services/macos_window_service.dart';
 import '../../services/pip_service.dart';
 import 'package:window_manager/window_manager.dart';
@@ -1236,27 +1237,7 @@ class _PlexVideoControlsState extends State<PlexVideoControls> with WindowListen
 
   Future<void> _toggleFullscreen() async {
     if (!PlatformDetector.isMobile(context)) {
-      // Query actual window state to determine what action to take
-      // This ensures we always toggle correctly regardless of local state
-      final isCurrentlyFullscreen = await windowManager.isFullScreen();
-
-      if (Platform.isMacOS) {
-        // Use native macOS fullscreen - titlebar is handled automatically
-        // Window listener will update _isFullscreen for UI
-        if (isCurrentlyFullscreen) {
-          await MacOSWindowService.exitFullscreen();
-        } else {
-          await MacOSWindowService.enterFullscreen();
-        }
-      } else {
-        // For Windows/Linux, use window_manager
-        // Window listener will update _isFullscreen for UI
-        if (isCurrentlyFullscreen) {
-          await windowManager.setFullScreen(false);
-        } else {
-          await windowManager.setFullScreen(true);
-        }
-      }
+      await FullscreenStateManager().toggleFullscreen();
     }
   }