feat(core, cli): add rate limit throttling retry with countdown UI

- Refactor retry utility to support GLM rate limit errors (code 1302) and TPM throttling
- Add getRateLimitRetryInfo() for unified rate-limit error detection
- Add exponential backoff for non-TPM rate limit errors
- Extend StreamEventType.RETRY with RetryInfo payload for UI feedback
- Add RetryCountdownMessage component for visual retry countdown
- Update useGeminiStream hook to handle retry events with countdown timer
- Add i18n support for rate limit messages (en/zh)

packages/cli/src/i18n/locales/zh.js

@@ -1198,4 +1198,11 @@ export default {
     '正在浏览器中打开扩展页面：{{url}}',
   'Failed to open browser. Check out the extensions gallery at {{url}}':
     '打开浏览器失败。请访问扩展市场：{{url}}',
+
+  // ============================================================================
+  // Retry / Rate Limit
+  // ============================================================================
+  'Rate limit error: {{reason}}': '触发限流：{{reason}}',
+  'Retrying in {{seconds}} seconds… (attempt {{attempt}}/{{maxRetries}})':
+    '将于 {{seconds}} 秒后重试…（第 {{attempt}}/{{maxRetries}} 次）',
 };