✨ v0.9.0

[0.9.0] - 2026-01-26

What's Changed

Added

• Diff Fingerprinting API - New functionality for grouping similar diffs across different image comparisons. This enables batch-approving the same visual change that appears on multiple pages (e.g., header/footer updates).
  • computeFingerprintSync() - Generate a compact fingerprint from a diff result
  • fingerprintSimilaritySync() - Compare two fingerprints with a similarity score (0.0-1.0)
  • fingerprintHashSync() - Get a coarse hash for fast O(1) grouping
  • DiffFingerprint interface with rich metadata:
    • zoneMask - 4x4 spatial grid showing which regions are affected
    • clusterCount, clusterPositions, clusterSizes - Spatial distribution data
    • diffMagnitude - Bucketed size categories (tiny/small/medium/large/massive)
    • avgIntensity, avgDensity - Change characteristics
    • hash - Pre-computed coarse hash for grouping

Full Changelog: v0.8.1...v0.9.0