fix(apps): 修复云超服市场单段 slug 商品下载链路

- 前端 buildMarketDownloadUrl：id 拆分不到 owner/name 两段时，
  不再产生 owner/undefined，统一按 pineagents/<id> 处理
- 后端 _fetch_market_bundle_bytes：owner/name 精确匹配失败后，
  回退按 name 单段精确匹配，兼容历史未补 owner 前缀的商品
  （如 creator、公众号爆款封面生成）

配套：server-core 侧已把存量单段 slug 数据规范化为 pineagents/<slug>

console/src/api/modules/pluginMarket.ts

@@ -94,7 +94,10 @@ export function buildMarketDownloadUrl(
   source?: string,
 ): string {
   const id = entry.id.startsWith("@") ? entry.id.slice(1) : entry.id;
-  const [owner, name] = id.split("/");
+  const parts = id.split("/");
+  // 单段 id（历史数据未补 owner 前缀）：统一按 pineagents/<id> 处理，避免 owner/undefined
+  const owner = parts[0] || "pineagents";
+  const name = parts[1] || parts[0];
   // 云超服市场源：下载指向本端代理（带登录态转发到 server-core bundle）。
   if (source === "pineagents") {
     return getApiUrl(`/plugins/market/download/${owner}/${name}`);

src/pineagents/app/routers/plugins.py

@@ -1232,6 +1232,23 @@ async def _fetch_market_bundle_bytes(
                 (it["id"] for it in items2 if it.get("slug") == slug),
                 None,
             )
+        if item_id is None:
+            # 兼容历史单段 slug（未补 owner 前缀，如 "creator"、"公众号爆款封面生成"）：
+            # 按 name 单独精确匹配，覆盖 owner/name 与 name 两种存储形态。
+            for it_type in ("plugin", "app"):
+                find3 = await client.get(
+                    "/market/items",
+                    params={"q": name, "item_type": it_type, "page_size": 20},
+                    headers=headers,
+                )
+                find3.raise_for_status()
+                items3 = (find3.json().get("items") or [])
+                item_id = next(
+                    (it["id"] for it in items3 if it.get("slug") in (name, f"{owner}/{name}")),
+                    None,
+                )
+                if item_id is not None:
+                    break
         if item_id is None:
             raise HTTPException(status_code=404, detail=f"云超服市场未找到商品 {slug}")