Add tracked AI skills for Blender assets and release QA

MEMORY.md

@@ -10,6 +10,10 @@ canonical implemented-features list in `docs/development-status.md`.
   the licence gate. Downloads live in `tmp/research/` (gitignored): DDG image search, street-view
   frames, neighbouring buildings — never committed, never shipped. Promotion into
   `docs/screens/refs/` always passes the sidecar licence + privacy gate and `CREDITS.md`.
+- **Project agent skills (2026-11-03):** two tracked skills live in `.agents/skills/`:
+  `gig-line-blender-asset-contract` and `gig-line-release-qa`. They are guidance only,
+  add no runtime dependency and are referenced from `tools/README.md`. The third-party
+  `blender-skills` pack remains gitignored.
 - **TV Studio shares the Hollywood location (owner):** the Late Night TV Studio is the same El
   Capitan Entertainment Centre block at 6840 Hollywood Blvd (which houses *Jimmy Kimmel Live!*),
   restaged for a late-night arrival. `VENUE_SPECS["tv_studio"]` is a 30.0 m variant of the 29.6 m