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.
* fix: update AI extract default model
* fix: update e2e worker node version
* fix: use node lts for e2e worker
* fix: align AI model and CI node version
Add AI-powered email content extraction feature using Cloudflare Workers AI to automatically identify and extract important information from emails including verification codes, authentication links, service links, and subscription links.
Features:
- AI extraction with priority-based logic (auth_code > auth_link > service_link > subscription_link > other_link)
- Admin allowlist configuration with wildcard support (*@example.com)
- Frontend display in both email list (compact) and detail view (full mode)
- Bilingual documentation (Chinese/English)
- Database migration: add metadata field to raw_mails (v0.0.3 -> v0.0.4)
Technical highlights:
- Proper regex escaping for wildcard pattern matching
- Content truncation to avoid AI token limits
- Error handling that won't affect email receiving
- JSON schema validation for AI responses
- Type-safe TypeScript implementation
- Vue I18n support with special character escaping
References:
- Inspired by Alle Project: https://github.com/bestruirui/Alle
- Uses Cloudflare Workers AI JSON Mode
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>
Gene Dai