Chat language:
- Added language_code field to TelegramChat model + migration
- Saved from message.from.language_code on webhook/polling
- Displayed as badge on bot chat cards and target receiver items
- Resolved from DB in target API response (works for existing receivers)
- Shown in chat picker dropdown (desc includes language)
EntitySelect improvements:
- Tracker-target link selector shows all targets, already-linked ones
appear disabled with "Already linked" hint
- Receiver chat picker shows already-added chats as disabled
Dev scripts:
- scripts/restart-backend.sh and restart-frontend.sh
- Updated .claude/docs/dev-servers.md to reference scripts
alexei.dolgolyov
82e400ddcd