fix(v3-vision): prevent process hang on lu_ tables missing id_random

app/lib_redis_helpers.py

@@ -112,13 +112,27 @@ def get_id_random(
     """
     Looks up the 'id_random' for a given internal integer ID.
     """
-    from app.db_sql import sql_select
+    from app.db_sql import sql_select, get_last_sql_error
     log.setLevel(log_lvl)
 
+    # Hardened check: Skip lookups for tables known to not have random IDs (e.g. lu_ tables)
+    if not table_name or table_name.startswith('lu_') or table_name.startswith('v_lu_'):
+        return None
+
     data = { 'id': record_id }
     sql = f"SELECT id_random FROM `{table_name}` AS `table` WHERE `table`.id = :id;"
 
-    if select_results := sql_select(sql=sql, data=data):
+    select_results = sql_select(sql=sql, data=data)
+
+    # Check for "Unknown column 'id_random'" error if sql_select failed
+    if select_results is False:
+        err = str(get_last_sql_error())
+        if "1054" in err and "id_random" in err:
+            log.info(f"Table '{table_name}' does not have an 'id_random' column. Skipping.")
+            return None
+        return False
+
+    if select_results:
         if isinstance(select_results, dict):
             if record_id_random := select_results.get('id_random'):
                 return str(record_id_random)

app/models/event_file_models.py

@@ -68,7 +68,6 @@ class Event_File_Base(BaseModel):
             ('event_presenter_id', 'event_presenter'),
             ('event_session_id', 'event_session'),
             ('event_track_id', 'event_track'),
-            ('lu_file_purpose_id', 'lu_file_purpose'),
         ]
         
         # 2a. Handle specific relational fields