fix: use # comments, remove broken _w_line function

wwwroot/api/cockpit_chat.dspy

@@ -1,4 +1,4 @@
-// cockpit_chat.dspy - SDLC Agent Loop v3.1 (streaming NDJSON)
+# cockpit_chat.dspy - SDLC Agent Loop v3.1 (streaming NDJSON)
 import aiohttp, json, os
 
 action = (params_kw or {}).get('action', 'list_messages')
@@ -105,10 +105,6 @@ def _w_card(title, body, kind="success"):
         body
     ]}
 def _w_progress(text): return {"widgettype":"Text","options":{"text":text,"css":"agent-progress","style":{"color":"#f59e0b","fontSize":"12px","padding":"2px 8px"}}}
-def _w_line():
-    parts = []
-    parts.append(json.dumps({"type":"widget","widget":w}, ensure_ascii=False))
-    return '\n'.join(parts)
 
 _tool_labels = {'switch_project':'切换项目','create_task':'创建任务','check_progress':'检查进度','list_tasks':'查询任务','add_repo':'关联仓库','list_repos':'查看仓库','add_bug':'报告Bug'}