(Feat) add crafting discovery + notification + inventory tool tips

Assets/GAME/Script/Inventory/ItemDescriptionView.cs

@@ -0,0 +1,43 @@
+using UnityEngine;
+
+namespace Ashwild.Inventory
+{
+    /// <summary>
+    /// The view payload for the hover description panel: exactly what the panel renders (icon,
+    /// name, description, and an optional duration/uses bar), nothing more. The inventory manager
+    /// builds one of these from a hovered slot and pushes it into the view, so the panel never
+    /// touches ItemData or the inventory model — it just draws what it is handed.
+    /// </summary>
+    public readonly struct ItemDescriptionView
+    {
+        public readonly Sprite Icon;
+        public readonly string Name;
+        public readonly string Description;
+
+        /// <summary>
+        /// Whether the hovered item tracks uses/durability and should show its duration bar.
+        /// </summary>
+        public readonly bool HasDuration;
+
+        /// <summary>
+        /// Remaining uses as a 0..1 fill for the bar's Filled image.
+        /// </summary>
+        public readonly float DurationFill;
+
+        /// <summary>
+        /// The remaining/max label drawn over the bar, e.g. "3 / 5".
+        /// </summary>
+        public readonly string DurationText;
+
+        public ItemDescriptionView(Sprite icon, string name, string description,
+            bool hasDuration, float durationFill, string durationText)
+        {
+            Icon = icon;
+            Name = name;
+            Description = description;
+            HasDuration = hasDuration;
+            DurationFill = durationFill;
+            DurationText = durationText;
+        }
+    }
+}