test(cli): 添加文件上传E2E测试的环境变量调试信息

- 引入 isBailianE2EEnabled 方法用于调试
- 在 worker 进程中打印关键环境变量 DASHSCOPE_API_KEY
- 打印 isDashScopeE2EReady 与 isBailianE2EEnabled 的返回结果
- 方便排查文件上传相关E2E测试环境状态问题

packages/cli/tests/e2e/file-upload.e2e.test.ts

@@ -1,7 +1,7 @@
 import { describe, expect, test } from "vite-plus/test";
 import { dirname, join } from "path";
 import { fileURLToPath } from "url";
-import { isDashScopeE2EReady, parseStdoutJson, runCli } from "./helpers.ts";
+import { isBailianE2EEnabled, isDashScopeE2EReady, parseStdoutJson, runCli } from "./helpers.ts";
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 
@@ -24,6 +24,15 @@ describe("e2e: file upload", () => {
   });
 });
 
+// === DEBUG: worker 进程中的环境变量 ===
+console.log(
+  "[worker:file-upload] DASHSCOPE_API_KEY =",
+  JSON.stringify(process.env.DASHSCOPE_API_KEY),
+);
+console.log("[worker:file-upload] isDashScopeE2EReady() =", isDashScopeE2EReady());
+console.log("[worker:file-upload] isBailianE2EEnabled() =", isBailianE2EEnabled());
+// === DEBUG END ===
+
 describe.skipIf(!isDashScopeE2EReady())("e2e: file upload（DashScope）", () => {
   test("file upload 缺少 --file 时打印子命令帮助并退出 (0)", async () => {
     const { stderr, exitCode } = await runCli([