diff --git a/wwwroot/api/cockpit_chat.dspy b/wwwroot/api/cockpit_chat.dspy
index 30fb53b..7ad2866 100644
--- a/wwwroot/api/cockpit_chat.dspy
+++ b/wwwroot/api/cockpit_chat.dspy
@@ -17,14 +17,12 @@ 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。绝大多数操作在当前项目内完成，不要切换
-- 仅当用户明确说出不同的项目名时才切换（如"切换到 XXX 项目"）
-- list_projects 仅当用户要求"列出项目"或需要切换但不知道项目名时才调用
-- 不要主动 list_projects 或 switch_project
+- 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
 
 ## 工作流
-- 项目操作：当前项目已在环境信息中。如果已在目标项目，直接操作，不需要切换
-- 切换项目：仅当需要切换时才 list_projects → switch_project
+- 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
@@ -43,8 +41,7 @@ AGENT_PROMPT = """你是开发产线驾驶舱 Agent。用工具获取数据，
 环境: __ENV__"""
 
 TOOLS = [
-    {"name":"list_projects","description":"列出所有可用项目","params":{}},
-    {"name":"switch_project","description":"切换到指定项目（需先list_projects确认项目名）","params":{"project":"项目名称"}},
+    {"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)"}},
@@ -142,20 +139,12 @@ 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 = {'list_projects':'列出项目','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 = {'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'}
 
 async def _exec_tool(sor, tool, params, ctx, uid, org_id):
     p = params or {}
     try:
-        if tool == 'list_projects':
-            allp = await sor.sqlExe("SELECT id,name,description,workspace_dir FROM sd_projects ORDER BY created_at DESC LIMIT 30",{})
-            if not allp: return '无项目'
-            lines = []
-            for r in allp:
-                marker = '★' if getattr(r,'id','') == ctx['pid'] else ' '
-                lines.append(f"{marker} {getattr(r,'name','')} | {getattr(r,'description','') or ''} | ws:{getattr(r,'workspace_dir','') or ''}")
-            return '\n'.join(lines)
-        elif tool == 'create_project':
+        if tool == 'create_project':
             name = (p.get('name','') or '').strip()
             if not name: return 'FAIL: 需要项目名称'
             ex = await sor.sqlExe("SELECT id FROM sd_projects WHERE name=${n}$",{"n":name})
@@ -201,7 +190,17 @@ async def _exec_tool(sor, tool, params, ctx, uid, org_id):
                 ctx['pid'] = ''; ctx['pname'] = ''; ctx['ws'] = ''; ctx['repos'] = []
             return f'OK: 已删除「{name}」及其所有关联数据'
         elif tool == 'switch_project':
-            proj = await _find_project(sor, p.get('project',''))
+            name = (p.get('project','') or '').strip()
+            if not name:
+                # No project specified — return available projects
+                allp = await sor.sqlExe("SELECT id,name FROM sd_projects ORDER BY created_at DESC LIMIT 20",{})
+                if not allp: return '无可用项目'
+                lines = []
+                for r in allp:
+                    marker = '★' if getattr(r,'id','') == ctx['pid'] else ' '
+                    lines.append(f"{marker} {getattr(r,'name','')}")
+                return '可用项目:\n'+'\n'.join(lines)
+            proj = await _find_project(sor, name)
             if not proj:
                 allp = await sor.sqlExe("SELECT name FROM sd_projects ORDER BY created_at DESC LIMIT 15",{})
                 return 'FAIL: 未找到。可用: '+', '.join([getattr(r,'name','') for r in (allp or [])])