feat(ui): D.2b item interaction + retail cursors + live character sheet

Lands the codex-worktree D.2b stream plus the extraction the 2026-07-02
UI architecture review mandated before commit:

- ItemInteractionController: single owner of double-click use/equip/
  container-open, targeted-use mode (health kits), drag-out drop;
  toolbar shortcut drags don't drop the real item. ItemEquipRules for
  multi-slot (coat) coverage via equip masks.
- Cursor phase: CursorFeedbackController (semantic priority chain:
  drag > resize > window-move > target-mode > text) + RetailCursorCatalog
  (enums 0x27/0x28/0x29, hotspot 14,14; ClientUISystem::UpdateCursorState
  0x00564630) resolved through the portal EnumIDMap chain by
  RetailCursorResolver; RetailCursorManager applies dat cursor art to the
  OS cursor. Register row AP-72 covers the OS standard-cursor fallback.
- Character window goes live: CharacterSheetProvider owns sheet assembly,
  XP-curve/raise-cost math and the raise flow — extracted out of
  GameWindow per Code Structure Rule 1 instead of committing the ~430-line
  feature body there. Optimistic XP/credit debits go through eventful
  store APIs (new ClientObjectTable.UpdateInt64Property +
  LocalPlayerState.DebitIntProperty/DebitInt64Property) instead of raw
  property-dictionary writes; register row AP-73 covers the still-missing
  raise ledger (#163).
- RetailWindowFrame: the shared nine-slice window mount recipe; the
  character window uses it, remaining windows migrate via #164.
- Status-bar buttons toggle inventory/character windows; retail row-major
  backpack ordering; WorldSession.SendUseWithTarget + raise/train sends.

GameWindow shrinks 14,214 -> 13,877 lines despite the new features; the
sheet/raise logic is unit-tested in CharacterSheetProviderTests instead
of trapped in the god object. Build green; full suite 3,286 tests pass.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/AcDream.App/UI/Layout/CharacterSheet.cs

@@ -26,10 +26,13 @@ public sealed class CharacterSheet
     /// <summary>Character level.</summary>
     public int Level { get; init; }
 
+    /// <summary>Gender display string, e.g. "Female". Null = omit.</summary>
+    public string? Gender { get; init; }
+
     /// <summary>Race string, e.g. "Aluvian". Null = omit.</summary>
     public string? Race { get; init; }
 
-    /// <summary>Heritage string, e.g. "Aluvian Heritage". Null = omit.</summary>
+    /// <summary>Heritage group display string, e.g. "Aluvian". Null = omit.</summary>
     public string? Heritage { get; init; }
 
     /// <summary>Title string, e.g. "the Adventurer". Null = omit.</summary>
@@ -108,11 +111,11 @@ public sealed class CharacterSheet
     public long UnassignedXp { get; init; }
 
     // ── Attribute raise costs (ExperienceToAttributeLevel, gmAttributeUI::PostInit) ──
-    // Retail formula: ExperienceToAttributeLevel(value + 1) − ExperienceToAttributeLevel(value).
-    // We store pre-computed per-attribute costs for the fixture; cost == 0 → attribute is
-    // at max or not trainable (raise button ghosted/hidden).  Ordered to match AttrRows
-    // (Strength, Endurance, Coordination, Quickness, Focus, Self, Health, Stamina, Mana).
-    // Source: gmAttributeUI::AttributeInfoRegion::Update (0x004f1910) + CM_Train::Event_TrainAttribute.
+    // Retail formula for x1: ExperienceToAttributeLevel(value + 1) − xpSpent.
+    // Retail formula for x10: ExperienceToAttributeLevel(value + min(10, remaining)) − xpSpent.
+    // Cost 0 means the attribute is at max or not trainable. Ordered to match AttrRows:
+    // Strength, Endurance, Coordination, Quickness, Focus, Self, Health, Stamina, Mana.
+    // Source: gmAttributeUI::GetCostToRaise/GetCostToRaise10 (0x0049cb80/0x0049cc70).
 
     /// <summary>
     /// XP cost to raise each of the 9 attributes/vitals by 1, in retail display order:
@@ -122,6 +125,12 @@ public sealed class CharacterSheet
     /// </summary>
     public long[] AttributeRaiseCosts { get; init; } = Array.Empty<long>();
 
+    /// <summary>
+    /// XP cost to raise each of the 9 attributes/vitals by up to 10 retail steps,
+    /// in the same display order as <see cref="AttributeRaiseCosts"/>.
+    /// </summary>
+    public long[] AttributeRaise10Costs { get; init; } = Array.Empty<long>();
+
     /// <summary>
     /// Skills shown on the Character window Skills tab. Retail gmSkillUI groups these by
     /// advancement class, then sorts each group alphabetically by skill name.