fix(LLM 審查流程): 避免單一角色失敗中止 pipeline

app/test/llm.test.js

@@ -85,14 +85,18 @@ describe('chat - OpenCode', async () => {
     assert.equal(result, 'hello world');
   });
 
-  it('calls process.exit(1) when OpenCode fails', async () => {
+  it('throws an error when OpenCode fails instead of exiting the process', async () => {
     process.env.OPENCODE_BASE_URL = 'http://opencode.local:4096';
-    mock.method(axios, 'post', async () => { throw new Error('fail'); });
-    const exitMock = mock.method(process, 'exit', () => { throw new Error('exit:1'); });
+    mock.method(axios, 'post', async () => {
+      const err = new Error('Request failed with status code 500');
+      err.response = { status: 500, data: { error: 'provider overloaded' } };
+      throw err;
+    });
+    const exitMock = mock.method(process, 'exit', () => { throw new Error('exit should not be called'); });
 
-    await assert.rejects(() => chat('sys', 'user'), /exit:1/);
+    await assert.rejects(() => chat('sys', 'user'), /HTTP 500.*provider overloaded/);
 
-    assert.equal(exitMock.mock.calls[0].arguments[0], 1);
+    assert.equal(exitMock.mock.calls.length, 0);
   });
 });