fix: restore mobile report scrolling and published product edits

Report pages now scroll inside the chat shell lock, and admin product save forks a draft or retires a published plan instead of rejecting with a generic constraint error.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/tests/admin-auth.test.ts

@@ -187,6 +187,19 @@ test("adminErrorResponse maps model provider configuration failures without expo
   }
 });
 
+test("adminErrorResponse maps product catalog failures without exposing details", async () => {
+  for (const [error, status, message] of [
+    [new Error("product_not_found"), 404, "商品不存在"],
+    [new Error("product_code_immutable"), 400, "商品代码不可修改"],
+    [new Error("product_draft_not_found"), 400, "只能编辑草稿。已发布商品请下架，或保存为新版本草稿后再发布"],
+    [{ code: "23503", message: "insert or update on table violates foreign key constraint" }, 409, "已有订单或订阅引用该商品，不能硬删除，请改为下架"],
+  ] as const) {
+    const response = adminErrorResponse(error);
+    assert.equal(response.status, status);
+    assert.deepEqual(await response.json(), { error: message });
+  }
+});
+
 test("adminErrorResponse preserves the sanitized authorization 503", async () => {
   const response = adminErrorResponse(
     new AdminAuthorizationError("后台服务暂时不可用", 503),