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52 packs, 4442 GLB models, 136 MB on disk — fetched sequentially with resume (a hash-valid pack is skipped, so an interrupted run costs nothing) via kenney.nl's content-hashed URLs with per-zip sha256. MIRROR.toml records every pack's canonical URL, sha256, size and file count, so a mirror is reproducible; --mirror=/ARCADE_ASSET_MIRROR redirects the base URL and fetch() verifies the digest identically whatever host served the bytes — a mirror we control is never trusted more than upstream. --packs= keeps a fresh clone from being forced to pull everything. Aliases restructured to survive the scale: per-pack theme rows (55) so every model in a pack inherits its setting, filename-token parsing with variant- marker stripping as the workhorse, and ~240 hand-curated query-time synonyms — the layer whose curation compounds across the whole catalogue. 82-query suite reports misses instead of being tuned green; the list is down to 2, both defensible (a floor IS somewhere to stand; a bell IS a metal clang). Three ranking bugs root-caused, not patched: - No stemming, so "smashing" never reached the alias "smash" and "glass smashing" returned glass PIPES. Added a conservative stemmer probed at synonym strength (only ever adds matches), which refuses to mangle glass/grass/class and routes "trees" to "tree", not "tre" - An overreaching alias: `spaceship` sat on four spaceEngine SOUND families. An engine hum is not a spaceship. Removed; "spaceship engine" still resolves - Kind confusion on ties: spacecraft models tied with spaceTrash sounds and lost the alphabetical tie-break. Added kind-aware tie-breaking driven by query intent — deliberately a TIE-BREAK, not a score bonus, so it cannot drag a weak model above a strong sound (laser gun / explosion / coins scores verified unchanged) Repo-policy violation fixed: all three asset .gitignore files were deny-lists covering only .glb/.png/.jpg, leaving 302 .gltf files from 3d-road-tiles fully committable. Converted to allow-lists — 4,744 asset files are now unstageable by accident. Scale at 4,999 entries: build 120 ms, search ~0.2 ms, 2.1 MB heap, and the prompt summary still 479 chars — flat as the catalogue grows, which is what keeps it affordable in every AI turn. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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6 lines
228 B
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# Downloaded by download_assets.sh — never committed (see repo policy in game.md).
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#
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# Allow-list rather than deny-list, so a pack shipping an unlisted format
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# cannot slip hundreds of asset files into a commit.
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*
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!.gitignore
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