Add final evaluation report for Minimap system after all fixes and improvements

- Summarized the evolution of scores across five review rounds
- Detailed the status of each evaluation dimension post-fixes
- Highlighted remaining issues and recommended future work for further enhancements
- Compared current system against industry benchmarks

Assets/_Game/Scripts/World/Map/MapServiceExtensions.cs

@@ -0,0 +1,20 @@
+namespace BaseGames.World.Map
+{
+    /// <summary>
+    /// IMapService 无状态扩展方法，集中可复用的查询逻辑。
+    /// MapPanel、MinimapHUD 等所有消费方均调用此处，避免分散的重复实现。
+    /// </summary>
+    public static class MapServiceExtensions
+    {
+        /// <summary>
+        /// 根据探索状态推导房间三级可见性（Explored > Mapped > Unknown）。
+        /// </summary>
+        public static RoomVisibility GetVisibility(this IMapService svc, string roomId)
+        {
+            if (svc == null)              return RoomVisibility.Unknown;
+            if (svc.IsExplored(roomId))   return RoomVisibility.Explored;
+            if (svc.IsMapped(roomId))     return RoomVisibility.Mapped;
+            return RoomVisibility.Unknown;
+        }
+    }
+}