- sync/bme-sync.js: conservatively clear backend hash mappings and mark
vectorIndexState dirty before importing remote snapshots via download,
merge, and cloud backup restore, preventing stale clean-looking state
after cross-device sync or restore
- vector/vector-index.js: mark backend vector state dirty on real backend
query failures (HTTP/network) instead of silently returning empty results
- regression: indexeddb-sync.mjs covers download/restore/merge import
dirty marking; p0-regressions.mjs covers backend query failure dirtying