feat(naming): dance registry + two-stage naming system; archive non-keepers

Keep aloha1(+pp), dance1(+pp), hakadance1. Archive hakadance2, alohaOG,
firedance1, hakaOG (all variants) to archive/. New dances get provisional
nd## ids at conversion; rename to a dance code (haka01 etc.) only on
adoption via tools/rename_clip.py. Registry: docs/dances/REGISTRY.md.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.claude/skills/animation/SKILL.md

@@ -31,10 +31,20 @@ This skill is the accumulated **do-it-this-way** knowledge from real runs.
 ```
 Blender here is **5.1.2**. When running from this repo the `--target` is **required** — the tool's default target path is ariki-relative and won't resolve.
 
-## Naming conventions (must be internally consistent)
+## Naming system (registry: `docs/dances/REGISTRY.md` — read it, it is the source of truth)
-- **Pack name = GLB basename** (lowercase): `aloha1`, `dance1`, `hakadance2`.
+Two-stage names. **New dances get a provisional id, never a content name**: at
-- **Clip name = `--name` = the animation name baked into the GLB** (PascalCase): `Aloha1`, `Dance1`, `HakaDance2`.
+conversion, assign the next free `nd##` from the registry — pack `nd08`, clip `ND08`,
-- **Clip ref in JSON = `<pack>/<ClipName>`**: `aloha1/Aloha1`.
+JSON `nd08.json`, variants `nd08_pp`/`ND08PP` — regardless of what the PC export was
+called (a take named "firedance1" turned out to be dance1's choreography). Only when
+Jeremy **adopts** a take for a specific in-game dance is it renamed to its dance code:
+`<style><NN>` lowercase pack (`haka01`), PascalCase clip (`Haka01`) — via
+`tools/rename_clip.py` + JSON rename + registry update. Rejected takes are archived
+(`archive/` here; `archive/dances/` in ariki-game, which is `.gdignore`d), never deleted.
+Numbers are never reused. Always update the registry row when converting/adopting/archiving.
+
+Structural rules (unchanged):
+- **Pack name = GLB basename** (lowercase); **clip name = `--name` baked into the GLB**.
+- **Clip ref in JSON = `<pack>/<ClipName>`**: `nd08/ND08`.
 - ClipCatalog auto-discovers anything dropped in `dancegen/` (also `kevin/`, `mixamo/`) — no code change needed.
 
 ### Dance JSON (single-clip default)