Update agent.py

agent.py

@@ -127,6 +127,7 @@ supabase: Client = create_client(
     os.environ.get("SUPABASE_URL"), 
     os.environ.get("SUPABASE_SERVICE_KEY"))
 # Initialize vector store without 'columns' parameter
+# Initialize vector store with explicit jsonb handling
 vector_store = SupabaseVectorStore(
     client=supabase,
     embedding=embeddings,
@@ -134,11 +135,14 @@ vector_store = SupabaseVectorStore(
     query_name="match_documents"
 )
 
-# Create retriever with proper search configuration
+# Create retriever with jsonb-compatible filters
 retriever = vector_store.as_retriever(
     search_kwargs={
         "k": 3,
-        "filter": {}
+        "filter": {},  # Will be automatically converted to jsonb
+        "query_parameters": {
+            "filter_params": {}  # Explicit empty jsonb filter
+        }
     }
 )