refactor: share handler

ios/ShareExtension/Info.plist

@@ -31,6 +31,8 @@
                 <integer>10</integer>
                 <key>NSExtensionActivationSupportsText</key>
                 <true/>
+                <key>NSExtensionActivationSupportsFileWithMaxCount</key>
+                <integer>20</integer>
             </dict>
 	    <key>PHSupportedMediaTypes</key>
 	    <array>

lib/core/services/share_receiver_service.dart

@@ -9,6 +9,7 @@ import '../../features/auth/providers/unified_auth_providers.dart';
 import '../../features/chat/providers/chat_providers.dart';
 import '../../features/chat/services/file_attachment_service.dart';
 import '../../core/providers/app_providers.dart';
+// No server chat creation here; follow chat flow on first send
 
 /// Lightweight payload for a share event
 class SharedPayload {
@@ -160,11 +161,16 @@ Future<void> _processPayload(Ref ref, SharedPayload payload) async {
       }
     }
 
-    // Prefill text in the composer (do not auto-send)
+    // Prefill text in the composer (do not auto-send) and request focus
     final text = payload.text?.trim();
     if (text != null && text.isNotEmpty) {
       ref.read(prefilledInputTextProvider.notifier).state = text;
+      // Bump focus trigger to ensure input focuses after navigation/build
+      final current = ref.read(inputFocusTriggerProvider);
+      ref.read(inputFocusTriggerProvider.notifier).state = current + 1;
     }
+    // Do NOT create a placeholder server chat here. The drawer will refresh
+    // when the user sends their first message, matching in-app behavior.
     // This allows the user to add a caption before sending
   } catch (e) {
     debugPrint('ShareReceiver: failed to process payload: $e');

lib/features/chat/providers/chat_providers.dart

@@ -24,6 +24,9 @@ final isLoadingConversationProvider = StateProvider<bool>((ref) => false);
 // Prefilled input text (e.g., when sharing text from other apps)
 final prefilledInputTextProvider = StateProvider<String?>((ref) => null);
 
+// Trigger to request focus on the chat input (increment to signal)
+final inputFocusTriggerProvider = StateProvider<int>((ref) => 0);
+
 class ChatMessagesNotifier extends StateNotifier<List<ChatMessage>> {
   final Ref _ref;
   StreamSubscription? _messageStream;
@@ -533,7 +536,14 @@ Future<void> _sendMessageInternal(
         // Invalidate conversations provider to refresh the list
         // Adding a small delay to prevent rapid invalidations that could cause duplicates
         Future.delayed(const Duration(milliseconds: 100), () {
-          ref.invalidate(conversationsProvider);
+          try {
+            // Guard against using ref after widget disposal
+            if (ref.mounted == true) {
+              ref.invalidate(conversationsProvider);
+            }
+          } catch (_) {
+            // If ref doesn't support mounted or is disposed, skip
+          }
         });
       } catch (e) {
         // Still add the message locally
@@ -1742,7 +1752,11 @@ Future<void> _saveConversationToServer(dynamic ref) async {
     // Refresh conversations list to show the updated conversation
     // Adding a small delay to prevent rapid invalidations that could cause duplicates
     Future.delayed(const Duration(milliseconds: 100), () {
-      ref.invalidate(conversationsProvider);
+      try {
+        if (ref.mounted == true) {
+          ref.invalidate(conversationsProvider);
+        }
+      } catch (_) {}
     });
   } catch (e) {
     // Fallback to local storage

lib/features/chat/widgets/enhanced_attachment.dart

@@ -204,6 +204,18 @@ class _EnhancedAttachmentState extends ConsumerState<EnhancedAttachment> {
         .toString();
     final size = _fileInfo?['size'];
     final sizeLabel = size is num ? _formatSize(size.toInt()) : null;
+    final lowerName = filename.toLowerCase();
+    final fileExtension = lowerName.contains('.')
+        ? lowerName.split('.').last
+        : '';
+    final List<String> metaParts = [];
+    if (fileExtension.isNotEmpty) {
+      metaParts.add('.${fileExtension.toUpperCase()}');
+    }
+    if (sizeLabel != null) {
+      metaParts.add(sizeLabel);
+    }
+    final metaLabel = metaParts.join(' • ');
 
     final card = Container(
       constraints: widget.constraints,
@@ -217,15 +229,14 @@ class _EnhancedAttachmentState extends ConsumerState<EnhancedAttachment> {
         ),
       ),
       child: Row(
-        mainAxisSize: MainAxisSize.min,
+        mainAxisSize: MainAxisSize.max,
         children: [
           Text(
             _fileIconFor(filename),
             style: const TextStyle(fontSize: AppTypography.headlineLarge),
           ),
           const SizedBox(width: Spacing.sm),
-          ConstrainedBox(
+          Expanded(
-            constraints: const BoxConstraints(maxWidth: 220),
             child: Column(
               crossAxisAlignment: CrossAxisAlignment.start,
               mainAxisSize: MainAxisSize.min,
@@ -240,9 +251,9 @@ class _EnhancedAttachmentState extends ConsumerState<EnhancedAttachment> {
                     fontWeight: FontWeight.w600,
                   ),
                 ),
-                if (sizeLabel != null)
+                if (metaLabel.isNotEmpty)
                   Text(
-                    sizeLabel,
+                    metaLabel,
                     style: TextStyle(
                       color: context.conduitTheme.textSecondary.withValues(
                         alpha: 0.7,

lib/features/chat/widgets/modern_chat_input.dart

@@ -342,6 +342,16 @@ class _ModernChatInputState extends ConsumerState<ModernChatInput>
       orElse: () => false,
     );
 
+    // React to external focus requests (e.g., from share prefill)
+    final focusTick = ref.watch(inputFocusTriggerProvider);
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted) return;
+      if (focusTick > 0) {
+        _ensureFocusedIfEnabled();
+        if (!_isExpanded) _setExpanded(true);
+      }
+    });
+
     return Container(
       // Transparent wrapper so rounded corners are visible against page background
       color: Colors.transparent,