Bump to 0.9.8 and stage the weights-fix changelog entry

TODO.md

@@ -201,12 +201,11 @@ licence-free zone only.
       the open palm + forward offset; a finger-curl rig stays out of scope** — there are no finger
       bones in the 13-bone contract, so a curl rig is a contract decision, not a modelling tidy-up.
       Recorded as ranked gap #6 (accept; revisit only if face work opens the budget).
-- [x] Weights/pose evidence captured and vision-reviewed (12 variants × idle/walk/sit). Findings:
-      (1) **wrist/hand detachment** — systemic: the hand is rigidly weighted to the `Hand` bone so
-      it separates from the forearm at the wrist in every pose; (2) **hip/thigh collapse + pelvic
-      banding** and a **knee pinch** in deep flexion (seated); (3) the guard's hip pouch clips the
-      compressed thigh when seated. Shoulders/neck hold their shape; no hem clipping. These are the
-      P1 weights fixes for the 0.10.0 character pass.
+- [x] Weights/pose evidence captured and vision-reviewed, and the P1s fixed: wrist/hand
+      detachment (wrist + hand now 100% `Hand`, hand raised, sleeve cuff follows the hand),
+      hip/thigh collapse + knee pinch (thigh/shin rigid with a short knee blend). Vision-verified:
+      hip fix clean, knee crease minor residual. The guard hip-pouch clip and the residual knee
+      crease remain as 0.10.0 refinements.
 - [x] UV/texel density: measured (64–122 px/m authored, 287–440 px/m effective fabric on the 4×
       repeat; table in `docs/3d-model-review.md`). Decision: **accept as-is** — the maps are
       neutral/runtime-tinted (not painted skin), so density controls only subtle weave/noise, and