diff --git a/wwwroot/api/cockpit_chat.dspy b/wwwroot/api/cockpit_chat.dspy
index d4ca8d2..3f87d48 100644
--- a/wwwroot/api/cockpit_chat.dspy
+++ b/wwwroot/api/cockpit_chat.dspy
@@ -17,12 +17,11 @@ dbname = get_module_dbname('pipeline-sdlc')
 AGENT_PROMPT = """你是开发产线驾驶舱 Agent。用工具获取数据，用 reply 回复。
 
 ## 核心原则
-- 环境信息中已显示当前项目。所有操作在当前项目内完成，绝不切换
-- 仅当用户明确说"切换到 XXX 项目"才调用 switch_project
-- 不要调用 switch_project 去"确认"或"查看"项目——环境信息已经告诉你了
+- 环境信息中已显示当前项目。所有操作在当前项目内完成
+- 项目切换由系统自动处理，你不需要也不能切换项目
+- 如果用户问"有哪些项目"，直接根据环境信息回答，不需要调用任何工具
 
 ## 工作流
-- 切换项目：用户说"切换到XXX" → switch_project("XXX")。不知道项目名 → switch_project(不传参数)看列表
 - 创建项目：不存在则 create_project
 - 删除项目：delete_project → 看到确认提示后，用户回复「确认删除 xxx」→ 再调 _sys_delete_project
 - 查看进度：list_tasks / task_detail / list_deliverables
@@ -41,7 +40,6 @@ AGENT_PROMPT = """你是开发产线驾驶舱 Agent。用工具获取数据，
 环境: __ENV__"""
 
 TOOLS = [
-    {"name":"switch_project","description":"切换到指定项目。如果项目名不确定，不传project参数可返回可用项目列表","params":{"project":"项目名称(可选，不传列出可用项目)"}},
     {"name":"create_project","description":"创建新项目","params":{"name":"项目名称","description":"项目描述(可选)"}},
     {"name":"delete_project","description":"删除项目（返回确认提示，用户确认后再调用_sys_delete_project执行）","params":{"project":"项目名称"}},
     {"name":"list_tasks","description":"列出当前项目任务","params":{"state":"状态(可选)"}},
@@ -145,7 +143,7 @@ def _w_card(title, body, kind="success"):
     ]}
 def _w_progress(text): return {"widgettype":"Text","options":{"text":text,"style":{"color":"#f59e0b","fontSize":"12px","padding":"2px 8px"},"halign":"left"}}
 
-_tool_labels = {'switch_project':'切换项目','create_project':'创建项目','delete_project':'删除项目','list_tasks':'查询任务','task_detail':'任务详情','list_deliverables':'查看交付件','view_deliverable':'交付件内容','list_questions':'查看问题','answer_question':'回答问题','create_task':'创建任务','start_agents':'启动角色Agent','diagnose_project':'项目诊断','check_progress':'检查进度','add_repo':'关联仓库','list_repos':'查看仓库','clone_repo':'克隆仓库','add_bug':'报告Bug','run_command':'执行命令'}
+_tool_labels = {'create_project':'创建项目','delete_project':'删除项目','list_tasks':'查询任务','task_detail':'任务详情','list_deliverables':'查看交付件','view_deliverable':'交付件内容','list_questions':'查看问题','answer_question':'回答问题','create_task':'创建任务','start_agents':'启动角色Agent','diagnose_project':'项目诊断','check_progress':'检查进度','add_repo':'关联仓库','list_repos':'查看仓库','clone_repo':'克隆仓库','add_bug':'报告Bug','run_command':'执行命令'}
 
 async def _exec_tool(sor, tool, params, ctx, uid, org_id):
     p = params or {}
@@ -447,7 +445,19 @@ if action == 'send_message':
                 return
 
             repos_str = ', '.join([r['n'] for r in ctx['repos']]) or '无'
-            env_text = f"【当前项目: {ctx['pname'] or '未选择'}】— 除非用户明确要求切换，否则在这里操作\n工作空间: {ctx['ws'] or '未设置'} | 仓库: {repos_str}"
+            # Pre-processing: detect switch request and execute before LLM runs
+            import re as _re
+            switch_m = _re.search(r'切换到\s*(.+)', message_text)
+            if switch_m:
+                target = switch_m.group(1).strip().rstrip('项目')
+                proj = await _find_project(sor, target)
+                if proj and proj.id != ctx['pid']:
+                    await _save_ctx(sor, uid, proj.id)
+                    ctx['pid'] = proj.id; ctx['pname'] = proj.name
+                    repos = await sor.sqlExe("SELECT repo_name,repo_url FROM sd_project_repos WHERE project_id=${p}$",{"p":proj.id})
+                    ctx['repos'] = [{'n':r.repo_name,'u':r.repo_url} for r in (repos or [])]
+                    repos_str = ', '.join([r['n'] for r in ctx['repos']]) or '无'
+            env_text = f"【当前项目: {ctx['pname'] or '未选择'}】— 所有操作在当前项目内完成\n工作空间: {ctx['ws'] or '未设置'} | 仓库: {repos_str}"
             system = AGENT_PROMPT.replace('__TOOLS__',TOOLS_TEXT).replace('__ENV__',env_text)
             msgs = [{"role":"system","content":system}]
             for h in (await sor.sqlExe("SELECT role,content FROM pipeline_conversations WHERE created_by=${u}$ ORDER BY created_at ASC LIMIT 20",{"u":uid}) or []):