fix: keyboard close on modal opens

lib/features/chat/providers/chat_providers.dart

@@ -36,6 +36,9 @@ final prefilledInputTextProvider = StateProvider<String?>((ref) => null);
 // Trigger to request focus on the chat input (increment to signal)
 final inputFocusTriggerProvider = StateProvider<int>((ref) => 0);
 
+// Whether the chat composer currently has focus
+final composerHasFocusProvider = StateProvider<bool>((ref) => false);
+
 class ChatMessagesNotifier extends StateNotifier<List<ChatMessage>> {
   final Ref _ref;
   StreamSubscription? _messageStream;

lib/features/chat/views/chat_page.dart

@@ -1533,12 +1533,25 @@ class _ChatPageState extends ConsumerState<ChatPage> {
     WidgetRef ref,
     List<Model> models,
   ) {
+    // Ensure keyboard is closed before presenting modal
+    final hadFocus = ref.read(composerHasFocusProvider);
+    try {
+      FocusManager.instance.primaryFocus?.unfocus();
+      SystemChannels.textInput.invokeMethod('TextInput.hide');
+    } catch (_) {}
     showModalBottomSheet(
       context: context,
       isScrollControlled: true,
       backgroundColor: Colors.transparent,
       builder: (context) => _ModelSelectorSheet(models: models, ref: ref),
-    );
+    ).whenComplete(() {
+      if (!mounted) return;
+      if (hadFocus) {
+        // Bump focus trigger to restore composer focus + IME
+        final cur = ref.read(inputFocusTriggerProvider);
+        ref.read(inputFocusTriggerProvider.notifier).state = cur + 1;
+      }
+    });
   }
 
   // TODO: Implement chat options when needed

lib/features/chat/widgets/modern_chat_input.dart

@@ -250,6 +250,10 @@ class _ModernChatInputState extends ConsumerState<ModernChatInput>
       WidgetsBinding.instance.addPostFrameCallback((_) {
         if (!mounted || _isDeactivated) return;
         final hasFocus = _focusNode.hasFocus;
+        // Publish composer focus state
+        try {
+          ref.read(composerHasFocusProvider.notifier).state = hasFocus;
+        } catch (_) {}
         if (hasFocus) {
           if (!_isExpanded) _setExpanded(true);
         } else {
@@ -277,6 +281,9 @@ class _ModernChatInputState extends ConsumerState<ModernChatInput>
 
   @override
   void dispose() {
+    try {
+      ref.read(composerHasFocusProvider.notifier).state = false;
+    } catch (_) {}
     _controller.dispose();
     _focusNode.dispose();
     _expandController.dispose();
@@ -1286,7 +1293,13 @@ class _ModernChatInputState extends ConsumerState<ModernChatInput>
   void _showAttachmentOptions() {
     HapticFeedback.selectionClick();
     final prevCanRequest = _focusNode.canRequestFocus;
+    final wasFocused = _focusNode.hasFocus;
     _focusNode.canRequestFocus = false;
+    // Ensure keyboard is closed before presenting modal
+    try {
+      FocusScope.of(context).unfocus();
+      SystemChannels.textInput.invokeMethod('TextInput.hide');
+    } catch (_) {}
     showModalBottomSheet(
       context: context,
       backgroundColor: Colors.transparent,
@@ -1361,6 +1374,16 @@ class _ModernChatInputState extends ConsumerState<ModernChatInput>
     ).whenComplete(() {
       if (mounted) {
         _focusNode.canRequestFocus = prevCanRequest;
+        if (wasFocused && widget.enabled) {
+          if (!_isExpanded) _setExpanded(true);
+          WidgetsBinding.instance.addPostFrameCallback((_) {
+            if (!mounted) return;
+            _ensureFocusedIfEnabled();
+            try {
+              SystemChannels.textInput.invokeMethod('TextInput.show');
+            } catch (_) {}
+          });
+        }
       }
     });
   }
@@ -1368,7 +1391,13 @@ class _ModernChatInputState extends ConsumerState<ModernChatInput>
   void _showUnifiedToolsModal() {
     HapticFeedback.selectionClick();
     final prevCanRequest = _focusNode.canRequestFocus;
+    final wasFocused = _focusNode.hasFocus;
     _focusNode.canRequestFocus = false;
+    // Ensure keyboard is closed before presenting modal
+    try {
+      FocusScope.of(context).unfocus();
+      SystemChannels.textInput.invokeMethod('TextInput.hide');
+    } catch (_) {}
     showModalBottomSheet(
       context: context,
       backgroundColor: Colors.transparent,
@@ -1376,6 +1405,16 @@ class _ModernChatInputState extends ConsumerState<ModernChatInput>
     ).whenComplete(() {
       if (mounted) {
         _focusNode.canRequestFocus = prevCanRequest;
+        if (wasFocused && widget.enabled) {
+          if (!_isExpanded) _setExpanded(true);
+          WidgetsBinding.instance.addPostFrameCallback((_) {
+            if (!mounted) return;
+            _ensureFocusedIfEnabled();
+            try {
+              SystemChannels.textInput.invokeMethod('TextInput.show');
+            } catch (_) {}
+          });
+        }
       }
     });
   }