fix: handle AgentIO JSON body (params.prompt/model_id), auto-detect action

wwwroot/api/cockpit_chat.dspy

@@ -2,6 +2,16 @@
 import aiohttp
 
 action = (params_kw or {}).get('action', 'list_messages')
+# AgentIO sends JSON body without action field — detect from message_text presence
+if action != 'send_message':
+    p = params_kw or {}
+    msg = (p.get('message_text') or '').strip()
+    if not msg:
+        inner = p.get('params', {})
+        if isinstance(inner, dict):
+            msg = (inner.get('prompt') or inner.get('message_text') or '').strip()
+    if msg:
+        action = 'send_message'
 dbname = get_module_dbname('pipeline-sdlc')
 
 AGENT_PROMPT = """你是开发产线驾驶舱 Agent。需要数据时调工具，最终用 reply 回复。
@@ -177,8 +187,17 @@ async def _exec_tool(sor, tool, params, ctx, uid, org_id):
 
 
 if action == 'send_message':
-    message_text = (params_kw or {}).get('message_text','').strip()
+    # AgentIO sends JSON: {"params":{"prompt":"...","model_id":"..."},...}
-    user_model_id = (params_kw or {}).get('model_id','')
+    # FormData sends: action=send_message&message_text=...&model_id=...
+    p = params_kw or {}
+    message_text = (p.get('message_text') or '').strip()
+    user_model_id = p.get('model_id', '')
+    # Try JSON body from AgentIO
+    if not message_text:
+        inner = p.get('params', {})
+        if isinstance(inner, dict):
+            message_text = (inner.get('prompt') or inner.get('message_text') or '').strip()
+            user_model_id = inner.get('model_id') or inner.get('llmid') or user_model_id
     if not message_text: return json.dumps({"error":"message_text is required"},ensure_ascii=False)
 
     blocked, reason = _security_scan(message_text)