Follow Qwen native environment authentication selection

Detect inferred OAuth and provider modes using the CLI precedence so credential filtering and readiness match invocation.

Checks: 114 native configuration and readiness tests; git diff --check.

desktop/src/agents/cli/qwen-native-config.cjs

@@ -65,6 +65,13 @@ function qwenNativeSelection(options = {}) {
         }
       }
     }
+    if (!auth) {
+      if (env.QWEN_OAUTH) auth = 'qwen-oauth'
+      else if (env.OPENAI_API_KEY && env.OPENAI_MODEL && env.OPENAI_BASE_URL) auth = 'openai'
+      else if (env.GEMINI_API_KEY && env.GEMINI_MODEL) auth = 'gemini'
+      else if (env.GOOGLE_API_KEY && env.GOOGLE_MODEL) auth = 'vertex-ai'
+      else if (env.ANTHROPIC_API_KEY && env.ANTHROPIC_MODEL && env.ANTHROPIC_BASE_URL) auth = 'anthropic'
+    }
     auth ||= typeof env.QWEN_DEFAULT_AUTH_TYPE === 'string' ? env.QWEN_DEFAULT_AUTH_TYPE : ''
     if (!auth) return { keys: [], unsupported: false, authType: '' }
     const selected = model ? (providers.get(auth) || []).filter(entry => entry?.id === model) : []

desktop/test/agents/cli/qwen-native-config.test.cjs

@@ -135,3 +135,17 @@ test('Qwen OAuth readiness ignores unrelated provider keys', t => {
   fs.writeFileSync(path.join(root, 'oauth_creds.json'), JSON.stringify({ access_token: 'oauth-token' }))
   assert.deepEqual(nativeCredentialState('qwen', { home, env }), { state: 'ready', source: 'native-credential' })
 })
+
+test('Qwen infers native auth from complete environment combinations', t => {
+  const home = fs.mkdtempSync(path.join(os.tmpdir(), 'meldwork-qwen-env-auth-'))
+  t.after(() => fs.rmSync(home, { recursive: true, force: true }))
+  const env = { HOME: home, QWEN_CODE_SYSTEM_SETTINGS_PATH: path.join(home, 'missing.json'),
+    OPENAI_API_KEY: 'unrelated', OPENAI_MODEL: 'model', OPENAI_BASE_URL: 'https://example.test' }
+  assert.deepEqual(qwenDeclaredCredentialKeys({ home, env }), ['OPENAI_API_KEY'])
+  const oauthEnv = { ...env, QWEN_OAUTH: '1' }
+  assert.deepEqual(qwenDeclaredCredentialKeys({ home, env: oauthEnv }), [])
+  assert.deepEqual(nativeCredentialState('qwen', { home, env: oauthEnv }), { state: 'unknown', source: 'unverified' })
+  fs.mkdirSync(path.join(home, '.qwen'))
+  fs.writeFileSync(path.join(home, '.qwen', 'settings.json'), JSON.stringify({ security: { auth: { selectedType: 'openai' } } }))
+  assert.deepEqual(qwenDeclaredCredentialKeys({ home, env: oauthEnv }), ['OPENAI_API_KEY'])
+})

desktop/test/agents/native-config-summary.test.cjs

@@ -42,6 +42,7 @@ test('Qwen summary follows native system, user, default and environment preceden
     QWEN_CODE_SYSTEM_DEFAULTS_PATH: defaults, QWEN_DEFAULT_AUTH_TYPE: 'environment' } }
   const write = (file, selectedType) => fs.writeFileSync(file, JSON.stringify({ security: { auth: { selectedType } } }))
   assert.deepEqual(nativeUserConfigSummary('qwen', options), { authType: 'environment' })
+  assert.deepEqual(nativeUserConfigSummary('qwen', { ...options, env: { ...options.env, QWEN_OAUTH: '1' } }), { authType: 'qwen-oauth' })
   write(defaults, 'default')
   assert.deepEqual(nativeUserConfigSummary('qwen', options), { authType: 'default' })
   write(user, 'user')