feat(chat): port retail client command families

Expand the typed client-command boundary across travel, character queries, local UI and layout controls, AFK and consent, emotes, friends, squelch and filters, and fill-components. Preserve retail packet layouts and queue ownership, import the confirmation dialog, and keep authoritative social state in Core.

Co-Authored-By: Codex <codex@openai.com>

src/AcDream.Core/Player/LocalPlayerState.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using AcDream.Core.Items;
+using AcDream.Core.Physics;
 using AcDream.Core.Spells;
 
 namespace AcDream.Core.Player;
@@ -108,6 +109,7 @@ public sealed class LocalPlayerState
     private VitalSnapshot? _mana;
     private readonly Dictionary<AttributeKind, AttributeSnapshot> _attrs = new();
     private readonly Dictionary<uint, SkillSnapshot> _skills = new();
+    private readonly Dictionary<uint, Position> _positions = new();
     private PropertyBundle _properties = new();
     private readonly Spellbook? _spellbook;
 
@@ -185,6 +187,20 @@ public sealed class LocalPlayerState
     /// <summary>All known skill snapshots, keyed by SkillId.</summary>
     public IReadOnlyDictionary<uint, SkillSnapshot> Skills => _skills;
 
+    /// <summary>Player Position qualities keyed by retail PositionType.</summary>
+    public IReadOnlyDictionary<uint, Position> Positions => _positions;
+
+    public Position? GetPosition(uint positionType) =>
+        _positions.TryGetValue(positionType, out var value) ? value : null;
+
+    public void OnPositions(IReadOnlyDictionary<uint, Position> positions)
+    {
+        _positions.Clear();
+        foreach (var pair in positions)
+            _positions[pair.Key] = pair.Value;
+        CharacterChanged?.Invoke();
+    }
+
     /// <summary>Snapshot for one skill, or <c>null</c> if it has not arrived yet.</summary>
     public SkillSnapshot? GetSkill(uint skillId) =>
         _skills.TryGetValue(skillId, out var s) ? s : null;