feat(net): #13 scaffold trailer fields on PlayerDescriptionParser.Parsed

No behavior change yet — adds CharacterOptionDataFlag, Shortcut/Inventory/
EquippedEntry records, and extends Parsed with trailer fields filled with
empty defaults. Sets up the per-section TDD walk in subsequent commits.

src/AcDream.Core.Net/Messages/PlayerDescriptionParser.cs

@@ -177,6 +177,46 @@ public static class PlayerDescriptionParser
         Cooldown       = 0x08,
     }
 
+    /// <summary>Bitmask of which optional trailer sections are present in
+    /// the PlayerDescription wire payload. Holtburger
+    /// <c>events.rs:503-607</c>; ACE <c>CharacterOptionDataFlag</c>.</summary>
+    [Flags]
+    public enum CharacterOptionDataFlag : uint
+    {
+        None                    = 0,
+        Shortcut                = 0x00000001,
+        SquelchList             = 0x00000002,
+        MultiSpellList          = 0x00000004,
+        DesiredComps            = 0x00000008,
+        ExtendedMultiSpellLists = 0x00000010,
+        SpellbookFilters        = 0x00000020,
+        CharacterOptions2       = 0x00000040,
+        TimestampFormat         = 0x00000080,
+        GenericQualitiesData    = 0x00000100,
+        GameplayOptions         = 0x00000200,
+        SpellLists8             = 0x00000400,
+    }
+
+    /// <summary>One shortcut bar entry. 16 bytes wire size.
+    /// holtburger shortcuts.rs:13-34.</summary>
+    public readonly record struct Shortcut(
+        uint Index,
+        uint ObjectGuid,
+        ushort SpellId,
+        ushort Layer);
+
+    /// <summary>One inventory entry — a guid plus a ContainerType discriminator
+    /// (0=NonContainer, 1=Container, 2=Foci).</summary>
+    public readonly record struct InventoryEntry(
+        uint Guid,
+        uint ContainerType);
+
+    /// <summary>One equipped object entry.</summary>
+    public readonly record struct EquippedEntry(
+        uint Guid,
+        uint EquipLocation,
+        uint Priority);
+
     public readonly record struct Parsed(
         uint WeenieType,
         DescriptionPropertyFlag PropertyFlags,
@@ -187,7 +227,17 @@ public static class PlayerDescriptionParser
         IReadOnlyList<AttributeEntry> Attributes,
         IReadOnlyList<SkillEntry> Skills,
         IReadOnlyDictionary<uint, float> Spells,
-        IReadOnlyList<EnchantmentEntry> Enchantments);
+        IReadOnlyList<EnchantmentEntry> Enchantments,
+        CharacterOptionDataFlag OptionFlags,
+        uint Options1,
+        uint Options2,
+        IReadOnlyList<Shortcut> Shortcuts,
+        IReadOnlyList<IReadOnlyList<uint>> HotbarSpells,
+        IReadOnlyList<(uint Id, uint Amount)> DesiredComps,
+        uint SpellbookFilters,
+        ReadOnlyMemory<byte> GameplayOptions,
+        IReadOnlyList<InventoryEntry> Inventory,
+        IReadOnlyList<EquippedEntry> Equipped);
 
     /// <summary>
     /// Parse a PlayerDescription payload. The 0xF7B0 envelope has been
@@ -260,7 +310,15 @@ public static class PlayerDescriptionParser
 
             return new Parsed(
                 weenieType, propertyFlags, vectorFlags, hasHealth,
-                bundle, positions, attributes, skills, spells, enchantments);
+                bundle, positions, attributes, skills, spells, enchantments,
+                CharacterOptionDataFlag.None, 0u, 0u,
+                System.Array.Empty<Shortcut>(),
+                System.Array.Empty<IReadOnlyList<uint>>(),
+                System.Array.Empty<(uint, uint)>(),
+                0u,
+                ReadOnlyMemory<byte>.Empty,
+                System.Array.Empty<InventoryEntry>(),
+                System.Array.Empty<EquippedEntry>());
         }
         catch (FormatException ex)
         {
@@ -281,7 +339,15 @@ public static class PlayerDescriptionParser
     {
         return new Parsed(weenieType, pFlags, vFlags, hasHealth,
             bundle, positions, attributes, skills, spells,
-            System.Array.Empty<EnchantmentEntry>());
+            System.Array.Empty<EnchantmentEntry>(),
+            CharacterOptionDataFlag.None, 0u, 0u,
+            System.Array.Empty<Shortcut>(),
+            System.Array.Empty<IReadOnlyList<uint>>(),
+            System.Array.Empty<(uint, uint)>(),
+            0u,
+            ReadOnlyMemory<byte>.Empty,
+            System.Array.Empty<InventoryEntry>(),
+            System.Array.Empty<EquippedEntry>());
     }
 
     // ── Attribute block reader ──────────────────────────────────────────────