# Web-Based Labeling Tool

Bounding-box labeling tool for training frames, with a hierarchical ad-hoc class
system (Main → Sub, e.g. `Enemy` → `Bat`), multiple independent label sets (Enemy,
Items, Traps, ...), multi-user support, versioned datasets, and an active-learning
workflow (seed-label → train → auto-label → review → promote).

See CLAUDE.md §3.2 for full requirements.

**Status:** not yet implemented.

## Structure

- [`backend/`](./backend) — API + data model (sets, hierarchical classes, dataset
  versions, per-image/per-set label state)
- [`frontend/`](./frontend) — labeling UI (framework not yet decided)