- Add proxy config field for Telegram channel to support HTTP/SOCKS proxies
- Use telego.WithHTTPClient to route all Telegram API requests through proxy
- Add FlexibleStringSlice type so allow_from accepts both strings and numbers
- Improve IsAllowed to match numeric ID, username, and @username formats
- Update config.example.json with proxy field
- Add at_seconds parameter for one-time reminders (e.g., "remind me in 10 minutes")
- Update every_seconds description to emphasize recurring-only usage
- Route cron delivery: deliver=true sends directly, deliver=false uses agent
- Fix cron data path from ~/.picoclaw/cron to workspace/cron
- Fix sessions path from workspace/../sessions to workspace/sessions
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
