diff --git a/agent/agent_config.py b/agent/agent_config.py
index 9cd7412..6a84cb0 100644
--- a/agent/agent_config.py
+++ b/agent/agent_config.py
@@ -308,8 +308,12 @@ class AgentConfig:
         enable_thinking = bot_config.get("enable_thinking", False)
         enable_memori = bot_config.get("enable_memori", False)
 
+        # 通用智能体按用户隔离：用 project_dir_key 覆盖 bot_id，
+        # 使 workspace / system_prompt 路径 / skills 目录都落到 projects/robot/{bot_id}-{user}
+        effective_bot_id = bot_config.get("project_dir_key") or request.bot_id
+
         config = cls(
-            bot_id=request.bot_id,
+            bot_id=effective_bot_id,
             api_key=bot_config.get("api_key", ""),
             model_name=bot_config.get("model", "qwen/qwen3-next-80b-a3b-instruct"),
             model_server=bot_config.get("model_server", ""),