allow proxy auto model selection

src/test/preflight.test.js

@@ -4,7 +4,7 @@ import axios from 'axios';
 import { checkRequiredEnv, verifyGiteaToken, verifyCommentToken, verifyLLM, fetchLLMModels, runPreflight } from '../preflight.js';
 
 const LLM_ENV_KEYS = [
-  'CLI_PROXY_API', 'CLI_PROXY_API_KEY', 'INPUT_CLI_PROXY_API', 'INPUT_CLI_PROXY_API_KEY',
+  'CLI_PROXY_API', 'CLI_PROXY_API_KEY', 'CLI_PROXY_API_MODEL', 'INPUT_CLI_PROXY_API', 'INPUT_CLI_PROXY_API_KEY',
   'MODEL', 'OPENCODE_MODEL', 'INPUT_MODEL',
 ];
 
@@ -164,6 +164,22 @@ describe('verifyLLM', () => {
     assert.deepEqual(result.models, ['gpt-5.5', 'gpt-5.4-mini']);
   });
 
+  it('passes when no model is specified and the proxy is reachable', async () => {
+    clearLLMEnv();
+    process.env.CLI_PROXY_API = 'https://proxy.example';
+    process.env.CLI_PROXY_API_KEY = 'secret';
+
+    const result = await verifyLLM({
+      fetchLLMModelsFn: async () => ({ ok: true, slugs: ['gpt-5.5', 'gpt-5.4-mini'] }),
+    });
+
+    assert.equal(result.ok, true);
+    assert.equal(result.provider, 'cliproxyapi');
+    assert.equal(result.command, null);
+    assert.equal(result.model, null);
+    assert.deepEqual(result.models, ['gpt-5.5', 'gpt-5.4-mini']);
+  });
+
   it('fails when proxy auth is invalid', async () => {
     clearLLMEnv();
     process.env.CLI_PROXY_API = 'https://proxy.example';