Fix username autocomplete for Pleroma instances and remote users

- Enhanced API search limits from 10 to 40 users with remote resolution
- Added 'resolve: True' parameter to enable finding users from remote instances
- Improved filtering logic to match username parts before @ symbol
- Increased follower/following search limits from 50 to 100 each
- Added Pleroma compatibility with parameter validation and fallback endpoints
- Fixed state management for autocomplete re-triggering after API calls
- Now successfully finds remote users like storm@social.wolfe.casa

🤖 Generated with [Claude Code](https://claude.ai/code)

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

src/activitypub/client.py

@@ -198,14 +198,32 @@ class ActivityPubClient:
     
     def search_accounts(self, query: str, limit: int = 10) -> List[Dict]:
         """Search for accounts by username"""
+        # Ensure limit is a valid integer for Pleroma compatibility
+        limit = max(1, min(int(limit), 80))
+        
         params = {
             'q': query,
             'type': 'accounts',
-            'limit': limit
+            'limit': limit,
+            'resolve': True  # Enable remote user resolution
         }
         
-        result = self._make_request('GET', '/api/v2/search', params=params)
-        return result.get('accounts', [])
+        try:
+            # Try v2 search first (preferred)
+            result = self._make_request('GET', '/api/v2/search', params=params)
+            return result.get('accounts', [])
+        except Exception:
+            try:
+                # Fallback to v1 accounts search (Pleroma-friendly)
+                fallback_params = {
+                    'q': query,
+                    'limit': limit,
+                    'resolve': True
+                }
+                return self._make_request('GET', '/api/v1/accounts/search', params=fallback_params)
+            except Exception:
+                # Return empty list if both fail
+                return []
 
     def search(self, query: str, account_id: Optional[str] = None, 
               max_id: Optional[str] = None, min_id: Optional[str] = None,