Add double-click-to-reset on all sliders (interval + pointer tolerance) and sync PaintHud slider defaults

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

Assets/Scripts/Components/MeshPainter/MeshPainter.cs

@@ -67,7 +67,7 @@ public partial class MeshPainter : MonoBehaviour
     /// <summary>Companion to <see cref="CamoHalfLambert"/>: scales down the direct specular highlight.</summary>
     public float CamoSpecularDampen
     {
-        get => GetMatFloat(SpecularDampenId, 0f);
+        get => GetMatFloat(SpecularDampenId, 0.1f);
         set => SetMatFloat(SpecularDampenId, value);
     }
 

Assets/Scripts/Components/UI/SliderDoubleClickReset.cs

@@ -0,0 +1,41 @@
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.UI;
+
+/// <summary>
+/// Double-clicking a slider resets it to its default value. The default is the slider's authored
+/// value, serialized when the component is added (runtime seeding from settings/persistence must not
+/// overwrite it, so it is captured at edit time, not in Awake). The reset goes through slider.value,
+/// so onValueChanged listeners (persistence, SliderCurve, value labels) fire as if the user dragged.
+/// </summary>
+[RequireComponent(typeof(Slider))]
+public class SliderDoubleClickReset : MonoBehaviour, IPointerClickHandler
+{
+    [SerializeField, Tooltip("Raw slider value restored on double-click. Seeded from the slider's authored value when the component is added.")]
+    private float _defaultValue;
+
+    [SerializeField, Tooltip("Max seconds between the two clicks.")]
+    private float _maxClickInterval = 0.25f;
+
+    [SerializeField, Tooltip("Max pointer movement (screen pixels) between the two clicks.")]
+    private float _maxPointerDistance = 8f;
+
+    private float _lastClickTime = float.NegativeInfinity;
+    private Vector2 _lastClickPosition;
+
+    public void OnPointerClick(PointerEventData eventData)
+    {
+        if (eventData.button != PointerEventData.InputButton.Left) return;
+
+        // Unitys clickCount (festes ~0.3s-Fenster, kein Positions-Check) bewusst ignoriert.
+        bool isDouble = Time.unscaledTime - _lastClickTime <= _maxClickInterval
+            && (eventData.position - _lastClickPosition).sqrMagnitude <= _maxPointerDistance * _maxPointerDistance;
+
+        _lastClickTime = isDouble ? float.NegativeInfinity : Time.unscaledTime;
+        _lastClickPosition = eventData.position;
+
+        if (isDouble) GetComponent<Slider>().value = _defaultValue;
+    }
+
+    private void Reset() => _defaultValue = GetComponent<Slider>().value;
+}

Assets/Scripts/Components/UI/SliderDoubleClickReset.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: d3e16aacd913a5149ab3ccf77d93cd5c