feat(ui): House tab ownership text — DisplayPurchaseTimeText + RuntimeHouseState

Derived the mechanism from the decomp before writing code: neither
gmHouseUI::PostInit @0x004a2710 nor gmMapUI::PostInit @0x004a1c70 sends a
HouseQuery, and six of gmHouseUI's seven Display* builders early-return on
m_pHouseData == 0. The only text a houseless character's House tab shows is
gmHouseUI::DisplayPurchaseTimeText @0x004a3110's expired branch (it doesn't
gate on m_pHouseData) — the local player's PropertyInt.HousePurchaseTimestamp
plus HouseSystem::HasPurchaseWaitPeriodExpired renders exactly "You may buy
another house immediately." for a fresh character. Exhaustive search of the
2013 EoR decomp, ACE, and the live DAT found zero support for a second
"You do not currently own a house." line the task brief described — this
commit ports what the decomp actually shows.

Ships:
- RuntimeHouseState: a minimal (no disposal, no construction-transaction
  Fault() point) Runtime owner per ISSUES #413's own sizing note, wired
  through GameEventWiring's existing HouseData/HouseStatus delegate holes,
  LiveSessionEventRouter, and GameRuntime.HouseOwner. Participates in
  RuntimeGenerationReset (new House stage) since a fresh login must not
  show a stale character's house state.
- HousePageController.Bindings.Lines/OnShown wired to real data; OnShown
  fires WorldSession.SendHouseQuery() on tab-open (AD-107: an acdream
  trigger, not a ported retail call site — filed in the divergence
  register).
- Fixed a real bug found along the way: HousePageController.Bind never
  wired UiTemplateListBox.TemplateResolver, so no row could ever render
  regardless of Lines content. Now reuses the Map tab's generic hotspot
  resolver.

Live-verified against a real local ACE server and the +Acdream character
(--session-config auto-select + a UI automation script): screenshot and
structural UI-tree dump both confirm the House tab renders exactly "You may
buy another house immediately." Graceful logout confirmed both launches.

ISSUES #413 narrowed to its one remaining piece: the six owned-house-only
Display* builders (DisplayBuyPayment/RentPayment/BuyTime/RentTimes/
Location/WarningText), unexercisable without a test character that owns a
house.

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

src/AcDream.Runtime/RuntimeGenerationReset.cs

@@ -60,15 +60,24 @@ public enum RuntimeGenerationResetStage
     /// beside its fellowship/allegiance precedents.
     /// </summary>
     Trade = 14,
-    BeginEntityRetirement = 15,
-    RetireEntities = 16,
-    DrainHostProjection = 17,
-    CompleteCanonicalEntities = 18,
-    CompleteHostProjection = 19,
-    ChatIdentity = 20,
-    PlayerSnapshots = 21,
-    PlayerIdentity = 22,
-    Complete = 23,
+    /// <summary>
+    /// Batch C (Map/House toolbar panel, 2026-08-17): the House tab's
+    /// query result is session-scoped like fellowship/allegiance/trade
+    /// above — a fresh login must not show a previous character's house
+    /// data. See <see cref="RuntimeHouseState"/>'s class doc for why this
+    /// owner is lighter-weight than its three siblings (no disposal, no
+    /// construction-transaction Fault() point).
+    /// </summary>
+    House = 15,
+    BeginEntityRetirement = 16,
+    RetireEntities = 17,
+    DrainHostProjection = 18,
+    CompleteCanonicalEntities = 19,
+    CompleteHostProjection = 20,
+    ChatIdentity = 21,
+    PlayerSnapshots = 22,
+    PlayerIdentity = 23,
+    Complete = 24,
 }
 
 public readonly record struct RuntimeGenerationResetSnapshot(
@@ -119,6 +128,7 @@ public sealed class RuntimeGenerationReset
     private readonly RuntimeFellowshipState _fellowship;
     private readonly RuntimeAllegianceState _allegiance;
     private readonly RuntimeTradeState _trade;
+    private readonly RuntimeHouseState _house;
     private ResetState? _state;
     private RuntimeGenerationToken _lastCompletedGeneration;
     private bool _hasCompletedGeneration;
@@ -136,7 +146,8 @@ public sealed class RuntimeGenerationReset
         RuntimeLocalPlayerIdentityState identity,
         RuntimeFellowshipState fellowship,
         RuntimeAllegianceState allegiance,
-        RuntimeTradeState trade)
+        RuntimeTradeState trade,
+        RuntimeHouseState house)
     {
         _transit = transit ?? throw new ArgumentNullException(nameof(transit));
         _communication = communication
@@ -157,6 +168,7 @@ public sealed class RuntimeGenerationReset
         _allegiance = allegiance
             ?? throw new ArgumentNullException(nameof(allegiance));
         _trade = trade ?? throw new ArgumentNullException(nameof(trade));
+        _house = house ?? throw new ArgumentNullException(nameof(house));
     }
 
     public RuntimeGenerationToken? ActiveRetiringGeneration =>
@@ -333,6 +345,9 @@ public sealed class RuntimeGenerationReset
                 case RuntimeGenerationResetStage.Trade:
                     Advance(state, _trade.Clear);
                     break;
+                case RuntimeGenerationResetStage.House:
+                    Advance(state, _house.ResetSession);
+                    break;
                 case RuntimeGenerationResetStage.BeginEntityRetirement:
                     _ = _entityObjects.BeginSessionClear();
                     state.Retirements = _entityObjects