…R code display

Backend:
- Add database migration for new part fields
- Update TypeScript types for parts
- Update API endpoints (GET, POST, PATCH) to include new fields
- Add validation for new fields in PartValidator
- Update MCP server parts tool schema

Frontend:
- Add qrcode.react library for QR code generation
- Create CncProgramQrCode component for terminal view
- Update PartDetailModal with editable fields and QR preview
- Update DetailPanel to show QR code when CNC program is set
- Update JobRow with bullet card indicator (visual + left border)
- Add translations for EN, NL, DE

Features:
- Drawing number field for part reference
- CNC program name generates scannable QR code for operators
- Bullet card (QRM terminology) flag for rush/priority orders