Manticore Asset Engine

## Initial release
First public build of Manticore Asset Engine — a private, offline-first inventory
manager that maps where everything you own actually lives.


### Highlights
- **Buildings → Rooms → Boxes → Items** hierarchy for organizing everything you own.
- **Building floor plans** — arrange rooms as connected, draggable/resizable zones
and see every box overlaid in one place; tap to drill in.
- **Room floor plans** with rectangular, L-shape, T-shape, and fully custom
polygon outlines, plus drag-to-place box markers.
- **QR codes** generated for every box, with built-in camera scanning to jump
straight to a box.
- **Label printing & export** — print to any label printer at exact thermal-label
sizes (or custom), or export as PDF/PNG.
- **Item photos** with optional on-device background removal.
- **Automatic valuation** — per-item values roll up to box, room, and total
inventory worth.
- **Insurance-ready PDF report** covering your full inventory with photos.
- **Backup & restore** — full local backup including photos, plus CSV export for
spreadsheets.