vdjtools 5.3.2

Corpus bootstrap now verifies both indexed payloads, isolates immutable cache versions, coordinates concurrent downloads with a crash-releasing lock, and repairs partial or corrupt legacy caches.

Sample PCA application projects bounded row blocks into preallocated scores. project-features --threads controls the numerical budget for fitting and application, with caller limits restored on exit.

All six source CI jobs passed. Release preflight passed source-distribution checks, all 12 platform/Python wheels and the release test gate; the produced macOS Python 3.12 wheel passed native-version and projection smoke checks. Fitted model parameters are unchanged.