Core idea: load a folder, navigate with arrow keys, tag issues, filter by validation errors.
Technical highlights: - Three.js for rendering - glTF-validator integration - IndexedDB caching with content hashing - Web Workers for parallel indexing - 100% client-side (File System Access API)
Features: QA tagging, validation reports, animation playback, texture inspection, JSON export.
Useful for game devs doing asset QA or anyone managing 3D model libraries.