feat: Implement DownDash ability and related systems

- Added DownDash ability with cooldown and speed configuration.
- Introduced DownDashState to handle down dashing mechanics, including gravity manipulation and animation playback.
- Updated PlayerMovement to support DownDash functionality.
- Enhanced PlayerStats to manage spring charge consumption and healing.
- Modified PlayerCombat and WeaponHitBoxInstance to support new hit confirmation events.
- Updated AbilityType to include new form types for character abilities.
- Improved Gizmos for better visualization of enemy detection and attack ranges.
- Added feedback systems for form switching in PlayerFeedback and IFeedbackPlayer.
- Refactored combat and movement states to accommodate new abilities and ensure smooth transitions.

Assets/_Game/Scripts/Combat/HurtBox.cs

@@ -123,13 +123,23 @@ namespace BaseGames.Combat
         {
             var col = GetComponent<Collider2D>();
             if (col == null) return;
-            // HurtBox：正常激活 = 青色，无敌 = 黄色，非激活 = 极淡青
-            Gizmos.color = !_isActive
-                ? new Color(0f, 0.85f, 1f, 0.15f)
-                : _isHurtBoxInvincible
-                    ? new Color(1f, 1f, 0f,  1f )
-                    : new Color(0f, 0.85f, 1f, 1f );
-            HitBox.DrawCollider2DWire(col);
+            Color fill, outline;
+            if (!_isActive)
+            {
+                fill    = new Color(0f, 0.85f, 1f, 0.05f);
+                outline = new Color(0f, 0.85f, 1f, 0.20f);
+            }
+            else if (_isHurtBoxInvincible)
+            {
+                fill    = new Color(1f, 1f, 0f, 0.25f);
+                outline = new Color(1f, 1f, 0f, 0.90f);
+            }
+            else
+            {
+                fill    = new Color(0f, 0.85f, 1f, 0.20f);
+                outline = new Color(0f, 0.85f, 1f, 0.90f);
+            }
+            HitBox.DrawCollider2DFilled(col, fill, outline);
         }
 #endif
     }