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/Network/NetworkPlayerSetup.cs

@@ -7,7 +7,6 @@ using Chameleon.Components;
 /// Per-avatar network glue on the spawned player. The local owner binds the scene singletons
 /// (GameModeManager, cameras) to itself via <see cref="GameModeManager.BindLocalPlayer"/>; remote
 /// avatars stop simulating so their transform is driven purely by the NetworkTransform replication.
-/// Position-sync milestone: remote avatars still show their mesh/idle pose, just no local control.
 /// </summary>
 [RequireComponent(typeof(PlayerCharacterController))]
 [DisallowMultipleComponent]
@@ -297,7 +296,6 @@ public class NetworkPlayerSetup : NetworkBehaviour
         SetBodyRenderers(visible);
     }
 
-    // Toggles every body renderer and records the applied state for the change-guard above.
     private void SetBodyRenderers(bool visible)
     {
         if (_bodyRenderers != null)