Enhance error handling in user intent retrieval

- Added a try-except block in the `get_or_create_user_intent` function to handle exceptions during the retrieval of user intent records from the database.
- This change ensures that if no record exists, the function can gracefully proceed to create a new intent record, improving robustness and reliability in intent management.

database.py

@@ -242,14 +242,19 @@ async def get_or_create_user_intent(session_id: str, wa_id: str) -> dict:
     """
     Fetch or create the intent record for this session.
     """
-    resp = supabase \
-        .table("user_intents") \
-        .select("*") \
-        .eq("session_id", session_id) \
-        .single() \
-        .execute()
-    if resp.data:
-        return resp.data
+    try:
+        resp = supabase \
+            .table("user_intents") \
+            .select("*") \
+            .eq("session_id", session_id) \
+            .single() \
+            .execute()
+        if resp.data:
+            return resp.data
+    except Exception as e:
+        # No record exists, create one
+        pass
+    
     new_intent = {
         "session_id":          session_id,
         "wa_id":               wa_id,