fix: BUG-073 (broken imports), BUG-009 (contact folders id=None), BUG-014 (tags assign 500), BUG-016 (search performance use_ai), BUG-030 (user delete GRANT DELETE), BUG-052 (miniapps response), BUG-047 (approval_requests columns), BUG-037 (compliance refresh), prestart.sh GRANT DELETE

app/plugins/builtins/unified_search/routes.py

@@ -148,8 +148,13 @@ async def _do_search(
     user_id = uuid.UUID(current_user["user_id"])
     is_system_admin = current_user.get("is_system_admin", False)
 
-    # KI query understanding
-    query_analysis = await llm_analyze_query(req.query, db=db, tenant_id=tenant_id)
+    # KI query understanding (skip if use_ai=False for performance)
+    use_ai = getattr(req, "use_ai", True)
+    if use_ai:
+        query_analysis = await llm_analyze_query(req.query, db=db, tenant_id=tenant_id)
+    else:
+        from app.plugins.builtins.unified_search.query_understanding import _fallback_query_analysis
+        query_analysis = _fallback_query_analysis(req.query)
 
     # Hybrid search with visibility filtering
     results = await hybrid_search(
@@ -176,8 +181,12 @@ async def _do_search(
         "event": "calendar",
     }
 
-    # KI result aggregation
-    aggregation = await llm_aggregate_results(results, req.query, db=db, tenant_id=tenant_id)
+    # KI result aggregation (skip if use_ai=False for performance)
+    if use_ai:
+        aggregation = await llm_aggregate_results(results, req.query, db=db, tenant_id=tenant_id)
+    else:
+        from app.plugins.builtins.unified_search.query_understanding import _fallback_aggregate
+        aggregation = _fallback_aggregate(results, req.query)
 
     search_results = [
         SearchResult(