fix(audit): converge on the 2026-07-23 animation standard — tool sync, QuatSkin INBOX, registry corrections

From the conformance audit (ariki-game .agents/audits/animation-standard-assessment-2026-07-23.md):
- tools/: cc_retarget + mixamo_retarget re-synced from ariki-game (were stale forks
  missing --despike/--fingers/--map ual); kevin_retarget path now repo-relative;
  mirror rule documented in exchange/GUIDE.md
- INBOX/lena: add canonical Ariki_Female_QuatSkin.glb; README marks MixamoSkin superseded
- REGISTRY: tide_dance_01 flagged (no DanceType enum entry); rain_dance note corrected
  (RainDance IS in the enum); boat table notes live canoedismount1/run_to_dive; QC split
  (loop_qc pre-commit vs anim_qc post-ingest) documented
- docs/iclone-bridge.md: stub created (GUIDE referenced it but it never existed)

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

docs/dances/REGISTRY.md

@@ -39,7 +39,7 @@ renamed once Jeremy says which ceremony it corresponds to. Rename with:
 |---|---|---|---|
 | `water_dance_01` | 1 | awaiting take | — |
 | `fire_dance_01` | 1 | awaiting take | — (the old "firedance1" was mislabeled dance1 choreography) |
-| `tide_dance_01` | 1 | awaiting take | — |
+| `tide_dance_01` | 1 | ⚠ **no enum entry** | — (no `TideDance` in the sim `DanceType` enum as of 2026-07-23 — confirm with Ozan whether the slot is real before filming a take) |
 | `fertility_dance_01` | 1 | **adopted** 2026-07-16 | aloha1 (hula) — shipped with `_pp` loop |
 | `food_dance_01` | 1 | awaiting take | — |
 | `taming_dance_01` | 1 | **adopted** 2026-07-16 | dance1 — shipped with `_pp` loop |
@@ -49,7 +49,7 @@ renamed once Jeremy says which ceremony it corresponds to. Rename with:
 | `colony_shield_dance_01` | 2 | awaiting take | — |
 | `age_progression_dance_01` | 3 | awaiting take | — (gates Age advancement) |
 | `star_watching_dance_01` | 3 | awaiting take | — |
-| `rain_dance_01` | tech | awaiting take | — (tech-tree "Rain Maker"; not in DanceType enum yet) |
+| `rain_dance_01` | 1 | awaiting take | — (tech-tree "Rain Maker"; `RainDance` **is** in the DanceType enum, Age 1 — earlier "not in enum yet" note was wrong, corrected 2026-07-23) |
 
 ## Register
 
@@ -82,3 +82,14 @@ Cyclic clips (`*_loop`, `*_idle`) must pass `loop_qc.py` before shipping; one-sh
 | `boat_row_loop` | `BoatRowLoop` | awaiting take | helm, stern-oar sweep ±18° |
 | `boat_fish_loop` | `BoatFishLoop` | awaiting take | Seat_Fisher; coexists with kevin Fishing01_Loop |
 | `boat_sail_idle` | `BoatSailIdle` | awaiting take | sway/line-hauling loop |
+| *(unregistered)* | `CanoeDismount`, `CanoeSitIdle` | **live in-game** since 2026-07-21 | shipped as `ariki-game/assets/quaternius/dancegen/canoedismount1.glb` (content-guessed name, predates this table) — register under a `boat_*` code at next adoption pass |
+| *(unregistered)* | `run_to_dive` | **live in-game** | Mixamo one-off at `ariki-game/assets/quaternius/mixamo/run_to_dive.glb` — outside this pipeline, listed for completeness |
+
+## QC tool split (audit 2026-07-23)
+
+Two QC tools exist and gate different stages — both stay:
+- **`tools/loop_qc.py` (this repo)** — the **pre-commit loop gate**: local-rotation pose gap,
+  velocity gap, root drift; exit 0/1. Every `_pp` (and `*_loop`/`*_idle` boat clip) must pass
+  it before adoption — this is the "must pass loop_qc" rule above.
+- **`ariki-game/tools/anim_qc.py`** — **post-ingest QC** on the game side: world-space seam
+  position/velocity, mid-clip stutter scan, seam-cross video render for eye review.

docs/iclone-bridge.md

@@ -0,0 +1,18 @@
+# iClone bridge — PC-lane overview
+
+(Stub created 2026-07-23 — this path was referenced by `exchange/GUIDE.md` but never
+written. The full operational detail lives elsewhere; this page just routes you.)
+
+The Mac↔PC animation bridge: iClone 8 + Video Mocap on Jeremy's Windows machine authors
+motion; this repo carries files both directions; ariki-game consumes 65-bone Quaternius
+GLBs.
+
+| Need | Go to |
+|---|---|
+| Which exchange/ folder to use, when files move/archive | `exchange/GUIDE.md` |
+| Naming (nd_## → ceremony codes), loop-pair rule, registry | `docs/dances/REGISTRY.md` |
+| Filming rules, iClone/AccuFACE settings, mocap cleanup, FBX export | `iclone-video-mocap` skill (`.claude/skills/` here and in ariki-game) |
+| CC FBX → Quaternius GLB conversion | `tools/cc_retarget.py` (mirror of ariki-game — game copy is authoritative) |
+| Looping (`_pp`) + QC gates | `tools/pingpong_bake.py` + `tools/loop_qc.py`; game-side `anim_qc.py` (split documented in REGISTRY.md) |
+| Game-side landing zone | `ariki-game/assets/quaternius/dancegen/` + `assets/dances/*.json` |
+| The skeleton/pack standard itself | `ariki-game/.humans/animation-bone-sources.html` + `.agents/wiki/quaternius-ual-packs.md` |