Files
lightcraft/crates/engine/src/cmd
Andrew FrahnandClaude Opus 5.5 07ae88e923 Perf: preview builds render photos side by side and make the thumbnail from the view's source
library.buildPreviews rendered one photo at a time, and each photo's thumbnail job decoded the
file again at thumbnail level after (before, in fact) the view job had decoded it at preview
level. Now the view renders first and its decoded source serves the thumbnail, and photos
render in as many lanes as an export batch (two for 1:1 previews, a full-size source each);
a panic in one photo counts as that photo's failure.

100 24 MP ARWs, standard previews, loaded machine: 49.4 s -> 38.4 s (CPU 3m28 -> 2m49).

Sources: own design.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-11 19:30:29 +11:00
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