diff --git a/pipeline_service/sdlc_ability.py b/pipeline_service/sdlc_ability.py
index 65a581b..29512a8 100644
--- a/pipeline_service/sdlc_ability.py
+++ b/pipeline_service/sdlc_ability.py
@@ -1602,11 +1602,46 @@ async def _slash_diagnose(args, ctx):
     return r or "无诊断数据"
 
 
+async def _slash_download(args, ctx):
+    """下载项目实时 tgz：打包 + 生成下载链接，弹窗带下载按钮。"""
+    ex = ctx.get("executor")
+    base = (ctx.get("base_url") or "").rstrip("/")
+    pid = ctx.get("project_id") or ""
+    if not pid:
+        return {"widgettype": "Message", "options": {"title": "错误", "message": "请先切换到项目"}}
+
+    # 实时打包 tgz（复用 backup_project）
+    r = await ex._execute_ability_tool("backup_project", {"project_id": pid}) if ex else None
+    if not r or r.startswith("ERROR"):
+        return {"widgettype": "Message", "options": {"title": "错误", "message": r or "打包失败"}}
+
+    # r 格式："OK: /d/pipeline/workspaces/0/_archive/xxx.tgz"
+    tgz_path = (r[4:].strip() if r.startswith("OK: ") else "").strip()
+    if not tgz_path:
+        return {"widgettype": "Message", "options": {"title": "错误", "message": "打包结果异常: " + r}}
+
+    from urllib.parse import quote
+    dl_url = f"{base}/pipeline-sdlc/api/download_project.dspy?path={quote(tgz_path)}"
+    fname = tgz_path.split('/')[-1]
+
+    return {
+        "widgettype": "PopupWindow",
+        "options": {"title": "项目备份下载", "cwidth": 60, "cheight": 12, "auto_open": True},
+        "subwidgets": [
+            {"widgettype": "Text", "options": {"text": f"项目备份已生成：{fname}", "cfontsize": 1.0}},
+            {"widgettype": "Button", "options": {"label": "点击下载 tgz", "css": "filler"},
+             "binds": [{"wid": "self", "event": "click", "actiontype": "script", "target": "self",
+                        "script": f"window.location.href='{dl_url}';"}]},
+        ],
+    }
+
+
 def register_sdlc_slash_commands():
     for cmd in [
         SlashCommand("tasks", "列出任务（可按角色筛选）", _slash_tasks, "pipeline", "sdlc_general"),
         SlashCommand("task", "任务树+输入输出（弹窗）", _slash_task, "pipeline", "sdlc_general"),
         SlashCommand("diagnose", "诊断项目状态", _slash_diagnose, "pipeline", "sdlc_general"),
+        SlashCommand("download", "下载项目tgz备份（生成下载链接）", _slash_download, "pipeline", "sdlc_general"),
     ]:
         register_slash_command(cmd)