docs: add webhook preset templates and Telegram per-user push docs (#769)
Add Telegram Bot, WeChat Work, Discord webhook preset templates to
frontend and documentation. Add per-user mail push and global push
documentation for Telegram Bot.
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
- Add daily request limit per IP in blacklist settings (1-1,000,000/day)
- Refactor access control logic: merge blacklist and rate limit checks
- Remove RATE_LIMIT_API_DAILY_REQUESTS env var, use database config instead
- Move x-custom-auth check earlier in middleware chain
- Add comprehensive English documentation (31 new guide pages)
- Improve code structure and error handling
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-authored-by: Claude <noreply@anthropic.com>
