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/UI/SliderCurve.cs

@@ -3,19 +3,10 @@ using UnityEngine;
 using UnityEngine.UI;
 
 /// <summary>
-/// Reshapes a UI <see cref="Slider"/>'s response with an <see cref="AnimationCurve"/> so the value runs
-/// non-linearly between the slider's authored <c>minValue</c>/<c>maxValue</c>. The curve maps the handle
-/// position (x, 0..1 - linear in screen space) to a value fraction (y, 0..1) that is then scaled to the
-/// slider's range. The slider's own min/max stays the single source of truth for the range; this only
-/// bends the mapping inside it - so dropping the component onto an existing slider needs no range re-entry.
-///
-/// <see cref="Value"/> is the curved output, <see cref="SetOutput"/> positions the handle to show a given
-/// output (inverting the curve), and <see cref="ValueChanged"/> raises the curved value whenever the
-/// handle moves - so the component is usable both standalone (wire <see cref="ValueChanged"/>) and from
-/// code that drives the raw slider (read <see cref="Value"/>).
-///
-/// The curve should be monotonic increasing (the default linear is); the inverse used by
-/// <see cref="SetOutput"/> assumes that.
+/// Reshapes a UI <see cref="Slider"/>'s response with an <see cref="AnimationCurve"/> mapping handle
+/// position (x, 0..1) to a value fraction (y, 0..1) scaled to the slider's own minValue/maxValue, which
+/// stays the single source of truth for the range. The curve must be monotonic increasing: the inverse
+/// used by <see cref="SetOutput"/> assumes that.
 /// </summary>
 [RequireComponent(typeof(Slider))]
 [DisallowMultipleComponent]