Refactor Assets/Scripts: trim restating comments, minor structure cleanups

Sweep over 48 files (Editor/ excluded): remove comments that restate the
code, condense class summaries, fix three stale doc statements
(HsvColorPicker alpha bar, PaintHud layoutPrefab, MasterVolume
FallbackDefault). Inline two single-use wrappers (IsPointerOverUi,
BuildModes), drop an unused using, replace a magic literal with the
existing ParallaxBase constant, and convert ~10 UnityEngine.Object null
checks to the implicit-bool convention. No serialized fields, signatures,
RPC/NetworkVariable names, defaults, or #if blocks touched.

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

Assets/Scripts/Components/PlayerScaler.cs

@@ -2,17 +2,16 @@ using UnityEngine;
 
 /// <summary>
 /// One knob that resizes the whole player. Setting <see cref="Scale"/> drives <c>transform.localScale</c>
-/// — which Unity already propagates to the visible mesh, the CharacterController capsule, the per-pose
-/// capsules (written as local values) and the camera target — and additionally rescales the movement,
-/// jump, slide and wall tunables on <see cref="PlayerCharacterController"/> proportionally, so a smaller
-/// or larger player still moves at the same body-relative pace instead of zipping or crawling. Without
-/// this the speeds (units/second, not geometry) stay put and a half-size player feels twice as fast.
+/// (mesh, CharacterController capsule, per-pose capsules and camera target follow automatically) and
+/// rescales the movement/jump/slide/wall tunables on <see cref="PlayerCharacterController"/>
+/// proportionally — the speeds are units/second, not geometry, so without this a half-size player feels
+/// twice as fast.
 ///
-/// The authored values on the controller ARE the scale-1 design values: tune them normally there. They are
-/// captured as the base in Awake and multiplied by Scale at runtime, so the serialized design values are
-/// never overwritten on disk. In the editor only <c>localScale</c> is previewed live (geometry is the only
-/// visual part); the speed rescale happens on play. The skinned mesh collider scales correctly because
-/// <see cref="SkinnedColliderBaker"/> divides the player scale back out of its bake.
+/// The authored controller values ARE the scale-1 design values: they are captured as the base in Awake
+/// and multiplied by Scale at runtime, so the serialized values are never overwritten on disk. In the
+/// editor only <c>localScale</c> is previewed live; the speed rescale happens on play. The skinned mesh
+/// collider scales correctly because <see cref="SkinnedColliderBaker"/> divides the player scale back
+/// out of its bake.
 /// </summary>
 [DisallowMultipleComponent]
 [RequireComponent(typeof(PlayerCharacterController))]