Docs: reduce over-documentation across gameplay scripts

Trim restated narration, dead commented-out code, and oversized class
headers; keep all why-comments (authority, timing, edge cases), tooltips,
and serialization caveats.

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

Assets/Scripts/FingerIK.cs

@@ -2,32 +2,20 @@ using System.Collections.Generic;
 using UnityEngine;
 
 /// <summary>
-/// Single-finger procedural pose + IK solver for a LOCAL +Y bone chain. Flexion (curl)
-/// is rotation around each joint's local hinge axis (default local -X, the palm-ward
-/// flex direction for the WhiteHand rig); negative per-joint limits allow a little
-/// back-of-hand (upward) bend when an IK target pulls there. Spread/abduction is around
-/// local Z on the base joint only and is also IK-solved toward the target for slight
-/// sideways reach. Works for any chain length: the thumb (2 rotating joints) and the long
-/// fingers (3) use identical code.
+/// Single-finger procedural pose + IK solver for a LOCAL +Y bone chain. Flexion (curl) rotates around
+/// each joint's local hinge axis (default local -X = palm-ward on the WhiteHand rig); spread/abduction
+/// is around local Z on the base joint only. Any chain length (thumb and long fingers share the code).
 ///
 /// Two drive modes, blended per frame:
-/// 1. Procedural curl. <see cref="curl"/> (0..1) lerps every joint from its rest angle
-///    (0) toward its per-joint <see cref="maxCurl"/> (closed fist). This is written first
-///    every frame and is the SEED pose for the IK pass.
-/// 2. IK reach. When a <see cref="target"/> is assigned and <see cref="ikWeight"/> &gt; 0,
-///    CCD bends the chain (seeded from the curl pose) so the fingertip reaches the target,
-///    constraining every joint to its hinge axis and angle limits mid-sweep. The final
-///    per-joint pose is Slerp(seedCurl, solvedIK, ikWeight) so curl and IK never fight and
-///    nothing accumulates frame-to-frame.
+/// 1. Procedural curl: <see cref="curl"/> (0..1) lerps every joint from rest toward its per-joint
+///    <see cref="maxCurl"/> - written first each frame, and the SEED pose for the IK pass.
+/// 2. IK reach: with a <see cref="target"/> and <see cref="ikWeight"/> &gt; 0, CCD bends the chain from
+///    that seed, hinge/limit-constrained mid-sweep; the final pose is Slerp(seed, solved, ikWeight),
+///    so curl and IK never fight and nothing accumulates frame-to-frame.
 ///
-/// All curl math is REST-RELATIVE: the captured rest localRotation is the 0-degree datum,
-/// so the rig's modeled fan/opposition offsets (e.g. thumb's ~55 deg local-Z rest) are
-/// preserved instead of being snapped to identity. Positive curl closes the fist for every
-/// digit on this rig.
-///
-/// Added at runtime onto the finger-root GameObject by <see cref="HandIK"/>, or wired by
-/// hand via <see cref="Setup"/>. By default the owning <see cref="HandIK"/> drives the
-/// solve once per frame; set <see cref="SolveInLateUpdate"/> if using this component alone.
+/// All curl math is REST-RELATIVE (the captured rest localRotation is the 0-degree datum), preserving
+/// the rig's modeled fan/opposition offsets. Added at runtime by <see cref="HandIK"/>, or wired by hand
+/// via <see cref="Setup"/>; set <see cref="SolveInLateUpdate"/> only when using this component alone.
 /// </summary>
 [ExecuteAlways]
 [DisallowMultipleComponent]