Fix broken CLI

trustgraph-cli/scripts/tg-invoke-agent

@@ -75,7 +75,7 @@ async def question(
 
             obj = json.loads(msg)
 
-            if obj["error"]:
+            if "error" in obj:
                 raise RuntimeError(obj["error"])
 
             if obj["id"] != mid:

trustgraph-cli/scripts/tg-invoke-llm

@@ -57,7 +57,7 @@ def main():
 
         query(
             url=args.url,
-            flow = args.flow_id,
+            flow_id = args.flow_id,
             system=args.system[0],
             prompt=args.prompt[0],
         )