fix(proxy): strip client fetch metadata upstream

electron/api/routes/ai-proxy.ts

@@ -22,6 +22,7 @@ const SKIPPED_REQUEST_HEADERS = new Set([
   'keep-alive',
   'proxy-authenticate',
   'proxy-authorization',
+  'sec-fetch-mode',
   'te',
   'trailer',
   'transfer-encoding',

scripts/run-pi-subagent-packaged-smoke.mjs

@@ -20,6 +20,7 @@ function parseArgs(argv, projectRoot = process.cwd()) {
   };
   for (let index = 0; index < argv.length; index += 1) {
     const argument = argv[index];
+    if (argument === '--') continue;
     const value = argv[index + 1];
     if (!value || value.startsWith('--')) throw new Error(`${argument} requires a value`);
     if (argument === '--runtime-root') options.runtimeRoot = resolve(value);
@@ -306,11 +307,15 @@ export async function runPackagedProductProof(options) {
       || beforeSubmitText.includes('正在重新连接本地 Agent')) {
       throw new Error(`Packaged proxy first Conversation exposed a runtime banner: ${beforeSubmitText}`);
     }
-    await page.getByTestId('coding-message-composer').evaluate(
-      (form) => form.requestSubmit(),
-    );
+    await page.getByRole('button', { name: '发送' }).click({ timeout: 30_000 });
 
-    const proxyStatus = await waitForActiveProxyProof(electronApplication);
+    let proxyStatus;
+    try {
+      proxyStatus = await waitForActiveProxyProof(electronApplication);
+    } catch (error) {
+      const bodyText = await page.locator('body').innerText().catch(() => '<unavailable>');
+      throw new Error(`${error instanceof Error ? error.message : String(error)}; UI=${bodyText}`);
+    }
     assertPackagedMain(proxyStatus);
     assertProxyStatus(proxyStatus.proxy);
     await evaluateProof(electronApplication, 'proxy.release-child');

tests/unit/ai-proxy-routes.test.ts

@@ -134,7 +134,9 @@ describe('ai proxy routes', () => {
     const response = createResponse();
 
     const handled = await handleAiProxyRoutes(
-      createRequest('POST', { model: 'deepseek-chat', messages: [] }),
+      createRequest('POST', { model: 'deepseek-chat', messages: [] }, {
+        'sec-fetch-mode': 'cors',
+      }),
       response.res,
       new URL('http://127.0.0.1:13210/api/ai-proxy/v1/chat/completions?trace=1'),
       {} as never,
@@ -155,6 +157,7 @@ describe('ai proxy routes', () => {
     const forwardedHeaders = fetchMock.mock.calls[0][1].headers as Record<string, string>;
     expect(forwardedHeaders.authorization).toBeUndefined();
     expect(forwardedHeaders.host).toBeUndefined();
+    expect(forwardedHeaders['sec-fetch-mode']).toBeUndefined();
     expect(response.statusCode).toBe(200);
     expect(response.header('content-type')).toBe('application/json');
     expect(response.body()).toBe(JSON.stringify({ id: 'chatcmpl_1' }));