feat: support minimal codex effort aliases

tests/unit/targets/codex-cliproxy-provider-config.test.ts

@@ -218,6 +218,18 @@ supports_websockets = false
     const rawText = fs.readFileSync(configPath, 'utf8');
     expect(rawText).toContain('model = "gpt-5.5"');
     expect(rawText).toContain('model_reasoning_effort = "xhigh"');
+  });
+
+  it('normalizes a native Codex minimal effort alias when adding the missing provider', async () => {
+    fs.mkdirSync(codexHome, { recursive: true });
+    fs.writeFileSync(configPath, 'model = "gpt-5.5-minimal"\n', 'utf8');
+
+    const result = await ensureCodexCliproxyProviderConfig(8317, env);
+
+    expect(result.changed).toBe(true);
+    const rawText = fs.readFileSync(configPath, 'utf8');
+    expect(rawText).toContain('model = "gpt-5.5"');
+    expect(rawText).toContain('model_reasoning_effort = "minimal"');
     expect(rawText).toContain('[model_providers.cliproxy]');
   });
 

tests/unit/targets/codex-runtime-integration.test.ts

@@ -819,6 +819,32 @@ process.exit(0);
     expect(codexConfig).not.toContain('gpt-5.5-high-fast');
   });
 
+  it('normalizes ccsxp native low Codex tuning aliases in config.toml', () => {
+    if (process.platform === 'win32') return;
+
+    const codexHome = path.join(tmpHome, '.codex');
+    fs.mkdirSync(codexHome, { recursive: true });
+    fs.writeFileSync(path.join(codexHome, 'config.toml'), 'model = "gpt-5.5-low-fast"\n');
+
+    const result = runCcsxpAlias(['fix failing tests'], {
+      ...process.env,
+      CI: '1',
+      NO_COLOR: '1',
+      HOME: tmpHome,
+      CCS_HOME: tmpHome,
+      CCS_CODEX_PATH: fakeCodexPath,
+      CCS_TEST_CODEX_ARGS_OUT: codexArgsLogPath,
+      CCS_TEST_CODEX_ENV_OUT: codexEnvLogPath,
+    });
+
+    expect(result.status).toBe(0);
+    const codexConfig = fs.readFileSync(path.join(codexHome, 'config.toml'), 'utf8');
+    expect(codexConfig).toContain('model = "gpt-5.5"');
+    expect(codexConfig).toContain('model_reasoning_effort = "low"');
+    expect(codexConfig).toContain('service_tier = "priority"');
+    expect(codexConfig).not.toContain('gpt-5.5-low-fast');
+  });
+
   it('loads the configured cliproxy provider env_key for ccsxp launches', () => {
     if (process.platform === 'win32') return;