Document the gear-fit pass and add the changelog

Create CHANGELOG.md with the post-0.6.0 gear-fit entries and backfill the
recent release history. Update the implemented-features list, asset-tooling
notes, README links and verification counts (headless 229, Python 87).

docs/asset-tooling.md

@@ -194,7 +194,11 @@ compares the pre-adoption captures with the current build: on the shots both set
 judge's like-for-like means rose on every sub-score (overall 0.8 → 1.0, backdrop 0.6 → 1.6) and
 the Pillow metric gap fell 0.444 → 0.348. The character pass
 ([`2026-11-01-npc/`](../docs/screens/realism/2026-11-01-npc/report.md)) adds the portrait shot and
-records the new faces, hands and sleeve cuffs.
+records the new faces, hands and sleeve cuffs. The gear-fit run
+([`2026-11-01-gear/`](../docs/screens/realism/2026-11-01-gear/report.md)) checks
+the sunglasses, bag and helmet against measured head/skirt bounds with
+`python3 tools/blender_assets.py fit`; it also fixed the portrait yaw and hid
+the focus overlay so the close-up shows the avatar.
 
 ![realism run](../docs/screens/realism/2026-11-01-adopt/sheet.jpg)