Add print badges, pagination, route splitting, JWT auth fixes, and list page alignment

- Fix equipment badge barcode not rendering (loading race condition)
- Fix printer QR code not rendering on initial load (same race condition)
- Add model image to equipment badge via imageurl from Model table
- Fix white-on-white machine number text on badge, tighten barcode spacing
- Add PaginationBar component used across all list pages
- Split monolithic router into per-plugin route modules
- Fix 25 GET API endpoints returning 401 (jwt_required -> optional=True)
- Align list page columns across Equipment, PCs, and Network pages
- Add print views: EquipmentBadge, PrinterQRSingle, PrinterQRBatch, USBLabelBatch
- Add PC Relationships report, migration docs, and CLAUDE.md project guide
- Various plugin model, API, and frontend refinements

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

shopdb/core/api/machines.py

@@ -337,7 +337,7 @@ def delete_machine(machine_id: int):
 
 
 @machines_bp.route('/<int:machine_id>/communications', methods=['GET'])
-@jwt_required()
+@jwt_required(optional=True)
 @add_deprecation_headers
 def get_machine_communications(machine_id: int):
     """Get all communications for a machine."""