feat: regex fallback for verification code extraction without Workers AI (#1048)

feat: add regex fallback for verification code extraction without Workers AI

When AI email extraction is enabled but no Workers AI binding is available,
fall back to a built-in, zero-dependency regex extractor so self-hosted
deployments without Workers AI still surface verification codes in Telegram
notifications and webhooks.

- Add worker/src/email/extract_code.ts: rule-based multilingual
  (English / Chinese / Japanese / Korean) verification-code extractor with
  year and YYYYMMDD date rejection to avoid false positives.
- ai_extract.ts: share the allowlist check and content parsing across both
  paths, extract a saveExtractMetadata helper, and use the regex fallback
  when env.AI is absent.
- Reuse the existing aiExtractResult pipeline (auth_code type), so Telegram
  and webhook output need no changes.
- Update bilingual CHANGELOG and AI-extract feature docs.
This commit is contained in:
Gene Dai
2026-06-02 15:35:43 +08:00
committed by GitHub
parent bf786947e3
commit b7718100c5
6 changed files with 158 additions and 26 deletions
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@@ -10,6 +10,7 @@
### Features
- feat: |AI 识别| 未配置 Workers AI 绑定时,自动回退到内置正则提取验证码(支持中英日韩,并排除年份与 `YYYYMMDD` 日期误判),让无 Workers AI 的自部署用户也能在 Telegram 推送与 Webhook 中拿到验证码
- feat: |Telegram| Telegram 新邮件推送与 `/mails` 历史邮件查看支持展示 AI 提取结果,包含验证码、验证链接、服务链接、订阅链接等关键信息
- feat: |Webhook| 邮件 Webhook 模板支持填充 AI 提取结果占位符,包括 `aiExtractType``aiExtractResult``aiExtractResultText`
- feat: |Frontend| 新增 `DISABLE_SHOW_GITHUB_FOR_USER` 配置,可仅对普通用户隐藏 Header 的 GitHub/版本入口,admin 仍可见(issue #1041