[xandreeddev]

What

• Media storage stays fast as images accumulate: core's pure SHA-256 updates typed arrays in place (about nine times faster), the media fingerprint takes one pass, the directory store hashes with the platform's SHA-256, withMediaStore no longer hashes fetched bytes again (MediaStore.get promises they match their key), and a begin's turn lookups read no image (SessionReadQuery.media: "references").
• A lost or damaged blob no longer makes every later begin of its session fail: that occurrence keeps its metadata with UNAVAILABLE_MEDIA_DATA, renders as its label line and is never sent; unavailable storage still fails with store.io. MediaStoreMemoryLive is documented for in-memory logs only.
• withMediaStore returns rows without an envelope untouched, so a newer release's row or an unreferenced damaged request part no longer fails the whole read.
• The directory media store sweeps temporary files an hour old, repairs a damaged blob when its bytes are put again (keeping the damaged copy in quarantine/), and nodeFilesIo.readStart keeps reading after short answers.
• Render snapshots: retained facts unlike this release's selection log and use the full archive instead of failing every open with session.decode; snapshots no longer copy replaced summaries, out-of-view compaction text or cut runs' step contexts; render equality is checked by the first build of each placement instead of four full renders at open, and the checkpoint bridge decodes its history once.
• Migration: SessionReadQuery.media (rerun sessionLogConformance), the MediaStore.get integrity promise, and the snapshot kit subject (validate without render options, project returning mismatch, MemoryProjection.Projected.verified) are in the CHANGELOG. No stored shape changes.

Checks

• bun run typecheck: pass
• bun test: 3786 pass, 0 fail
• bun run foundry demo, build:packages, verify:packages, docs:generate (no diff), bun run --cwd packages/website check: pass