huge refactor

src/Roboto.Data/EntityMapper.cs

@@ -0,0 +1,54 @@
+using System.Numerics;
+using Roboto.Core;
+using MemEntity = Roboto.Memory.Entity;
+
+namespace Roboto.Data;
+
+/// <summary>
+/// Maps raw Memory.Entity → Core.EntitySnapshot. Single source of truth for entity mapping.
+/// </summary>
+public static class EntityMapper
+{
+    public static EntitySnapshot MapEntity(MemEntity e, Vector2 playerPos)
+    {
+        var pos = e.HasPosition ? new Vector2(e.X, e.Y) : Vector2.Zero;
+        var dist = e.HasPosition ? Vector2.Distance(pos, playerPos) : float.MaxValue;
+        var category = EntityClassifier.Classify(e.Path, e.Components);
+        var rarity = (MonsterRarity)e.Rarity;
+
+        return new EntitySnapshot
+        {
+            Id = e.Id,
+            Path = e.Path,
+            Metadata = e.Metadata,
+            Category = category,
+            ThreatLevel = MapThreatLevel(category, rarity),
+            Rarity = rarity,
+            Position = pos,
+            DistanceToPlayer = dist,
+            IsAlive = e.IsAlive || !e.HasVitals,
+            LifeCurrent = e.LifeCurrent,
+            LifeTotal = e.LifeTotal,
+            IsTargetable = e.IsTargetable,
+            Components = e.Components,
+            ModNames = e.ModNames,
+            TransitionName = AreaNameLookup.Resolve(e.TransitionName) ?? e.TransitionName,
+            ActionId = e.ActionId,
+            IsAttacking = e.IsAttacking,
+            IsMoving = e.IsMoving,
+        };
+    }
+
+    public static MonsterThreatLevel MapThreatLevel(EntityCategory category, MonsterRarity rarity)
+    {
+        if (category != EntityCategory.Monster) return MonsterThreatLevel.None;
+        return rarity switch
+        {
+            MonsterRarity.White => MonsterThreatLevel.Normal,
+            MonsterRarity.Magic => MonsterThreatLevel.Magic,
+            MonsterRarity.Rare => MonsterThreatLevel.Rare,
+            MonsterRarity.Unique => MonsterThreatLevel.Unique,
+            _ => MonsterThreatLevel.Normal,
+        };
+    }
+}