feat: 完成项目助手与监控演示并修复聊天及云部署配置

backend/services/assistant_settings.py

@@ -0,0 +1,9 @@
+"""Server-side release switches; included in each frozen run."""
+import os
+
+
+def flags():
+    return {"assistant": os.getenv("XINGBANG_ASSISTANT_ENABLED", "1") != "0",
+            "demo": os.getenv("XINGBANG_ASSISTANT_DEMO_ENABLED", "1") != "0",
+            "experiences": os.getenv("XINGBANG_ASSISTANT_EXPERIENCES", "1") != "0",
+            "evaluation": os.getenv("XINGBANG_ASSISTANT_EVALUATION", "1") != "0"}