Faster first load: ship the int16 geometry as byte planes + gzip (scroll.i16p.gz, 1.62 MB instead of 3.48 MB), unpacked in the browser to the exact scroll.bin bytes with a fallback to scroll.bin; tools/pack_bin.py builds it, tests/pack_bin.mjs checks the round trip
- scrolls/index.json registry and per-scroll manifests (windings with ranges, ink layers with sources and resolutions, credits, data terms); PHerc. 139 migrated with no visible change
- scroll picker (hidden with one scroll), per-scroll and per-winding lazy loading
- lib/manifest.js validator shared by the page and tools/validate_scroll.mjs; docs/ADDING_A_SCROLL.md; tools/precompute_template.py
- Open your own: files, folders, zips or a URL, read in the browser only (nothing uploaded), OBJ/PLY with UVs, PNG/JPG/TIFF layers, size limits, clear errors, kept in IndexedDB and labelled local; downloadable synthetic example package
- atlases as WebP with JPG fallback (about 2.1 MB smaller)
- rename layers: Published ink (2.4 µm) and Our ink model (9 µm)
