Research: exhaustive Nimso Project TX study (82 video transcripts) + Boneworks/BIMOS rig reference

- research/nimso-project-tx.md: chronological per-video notes 2017-2026, topic synthesis,
  VR Messs scope, proportions & calibration (Winter/Drillis-Contini/Dempster tables verified),
  open unknowns
- research/sources/nimso-transcripts/: yt-dlp auto-caption transcripts + dated index (re-pullable)
- research/vr-physics-rig-hexabody.md: BIMOS/HexaBody/Boneworks reference, Box3D native joint
  mapping (spherical/motor/prismatic/distance), superseded-as-target note
- AGENTS/HANDOFF research pointers

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

AGENTS.md

@@ -226,7 +226,8 @@ device only; the editor has an XR simulator for dev. Trackers/action map: see `x
    PinJoint quirks (anchors captured at creation; joint node position READ every tick;
    break measures the prop-local anchor vs the palm point) apply to the v5.0–5.2 PIN path
    only — the weld does not share the pivot behavior. Research reports live in `research/`
-   (arm IK, IK stability/deep, grabbing, two-handed grab/Box3D internals, addon weld patch,
+   (**`nimso-project-tx.md` = the Project TX player design VR Messs is recreating — read first for any body
+   work**, `vr-physics-rig-hexabody.md` = Boneworks/BIMOS reference + Box3D joint mapping, arm IK, IK stability/deep, grabbing, two-handed grab/Box3D internals, addon weld patch,
    body physics hugs, body physics Godot facts) — READ before re-researching or changing
    grab/IK/body. Stink-O's box3d-godot (custom components) = documented plan-B.
 8. **Body physics Stage 1 — PHYSICAL CHEST, implemented 2026-10-01, FAILED first playtest.**