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lightcraft/crates/engine
Brandon ThomasandClaude Opus 5.5 ec78cb8236 Perf: big libraries — keyword tree 5.6× faster, per-frame library queries cached
A 100k-photo scaling check (ignored test `scale_100k_library_queries`) showed the left
panel rebuilding the keyword tree every frame (323 ms), the grid recomputing date headers
(57 ms) and the Keywords panel its suggestions (44 ms) every frame.
- keyword_tree builds with hash maps instead of linear sibling scans: 323 → 57 ms at 100k.
- LightcraftApp::caches keeps the keyword tree, date runs and keyword suggestions per catalog
  revision (and inputs), so each is computed once per change instead of every frame.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-03 00:05:38 -04:00
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