feat(ui): Campaign OP slice OP4 — the Character tab

Binds LayoutDesc 0x21000028 (gmCharacterSettingsUI) through OP2's
template-list mechanism and OP3's OptionPage model: 6 authored group
headers + 50 toggle rows (49 from the 2013 build + D3's "Listen to PK
death messages", AP-193) in research doc §2's authored order, each row
resolved by PlayerOption id through CharacterOptionTable, seeded from
live RuntimeCharacterOptionsState, defaulted from CharacterOptionTable.
ClientDefault (byte-verified against UIOption_Checkbox::SetPlayerOption
@0x00486e80's own GetDefaultOptionValue call — AP-194 updated to confirm
the directive was followed), labels/tooltips resolved by name from
string table 0x23000003 (never hard-coded English), and registered with
OptionsPanelController.CharacterPage. Apply/Reset/Defaults
(0x100001FC/FD/FE) are now wired per-page via a scoped subtree search
(UiElement.FindDescendant, promoted from UiTabPanel) since Character/
Chat/Config each author their own physical instance under the SAME
element ids.

Consumers: Group A (29 ids) wire+store only via the existing
SetSingleCharacterOptionRuntimeCmd/TrySetOption seam. Group B: Display
Timestamps prefixes new transcript lines (RuntimeCommunicationState.
DisplayTimestampsSource); Disable Distance Fog forces FogMode.Off
(WeatherSystem.DisableDistanceFogSource, retiring half of TS-73); Run as
Default Movement inverts the walk-mode modifier's default
(RuntimeLocalPlayerMovementState.RunAsDefaultMovementSource). Group C
re-points AutoTarget/AutoRepeatAttack/ViewCombatTarget
(CharacterOptionCombatSettingsSource), VividTargetingIndicator/
CoordinatesOnRadar/LockUI/AcceptLootPermits from the client-local
GameplaySettings record to the canonical server bit — closing two
previously-unfiled divergences where AutoRepeatAttack and
AcceptCorpseLootingPermissions never reached the wire despite being
retail auto-save ids. TS-73 narrowed to its two still-open cases;
TS-75..TS-80 file the genuine gaps (no day/night force, no weather-
particle/profanity-filter/salvage/housing/pickup-preference subsystem,
fellowship-create's unaudited client-sourced field) rather than
inventing stand-ins.

Conformance: CharacterOptionsPageControllerTests pins all 50 rows
against CharacterOptionTable in both directions (an invented or dropped
row fails the build), the authored group/order row-by-row, and the
build/seed/Apply/Reset/Defaults/wire-publish behavior end-to-end against
the committed fixture. 52 new tests; full solution suite 13,008 passed /
4 skipped / 0 failed (was 12,956/4/0).

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

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

@@ -67,6 +67,17 @@ public sealed class OptionsPanelController : IRetainedPanelController
     private const uint UseMouseTurningSettingsId = 0x100005CCu;
     private const uint ExitGameId = 0x10000617u;
 
+    // Apply/Reset/Defaults — research doc §3.1/§10.1: identical geometry
+    // AND identical element ids on every page that has them (Character,
+    // Chat, Config — NOT Gameplay). Each page's own LayoutDesc authors its
+    // OWN physical button instances under these SAME numeric ids, so a
+    // flat layout.FindElement lookup cannot reliably pick one page's
+    // instance — Campaign OP OP4 wires each page's copy from a SCOPED
+    // search rooted at that page's own slot (UiElement.FindDescendant).
+    private const uint ApplyButtonId = 0x100001FCu;
+    private const uint ResetButtonId = 0x100001FDu;
+    private const uint DefaultsButtonId = 0x100001FEu;
+
     /// <summary>Callback delegates this controller wires the seven Gameplay
     /// buttons and the close button to. Every field maps to exactly one
     /// button; a null field leaves that button INERT (authored, clickable,
@@ -191,9 +202,39 @@ public sealed class OptionsPanelController : IRetainedPanelController
         BindButton(layout, ReportAbuseId,
             () => callbacks.DisplaySystemMessage(callbacks.ReportAbuseMessage));
 
+        // Apply/Reset/Defaults — retail's gmCharacterSettingsUI /
+        // gmChatOptionsUI / gmConfigUI ::ListenToElementMessage
+        // @0x0049E3A0 (COMDAT-folded — literally the SAME handler body on
+        // all three pages, structure doc §3.1): idElement == 0x100001FC ->
+        // SaveCurrentValues (Apply); 0x100001FD -> RestoreSavedValues
+        // (Reset); 0x100001FE -> RestoreDefaultValues (Defaults). Each
+        // page's OWN OptionPage model owns the actual semantics
+        // (OptionPageModel.cs); this loop only wires each page's physical
+        // button instances to its own model.
+        foreach (uint pageId in new[] { CharacterPageId, ChatPageId, ConfigPageId })
+        {
+            OptionPage page = controller._pages[pageId];
+            UiElement? pageRoot = UiElement.FindDescendant(tabPanel, pageId);
+            if (pageRoot is null) continue;
+
+            BindPageButton(pageRoot, ApplyButtonId, page.Apply);
+            BindPageButton(pageRoot, ResetButtonId, page.Reset);
+            BindPageButton(pageRoot, DefaultsButtonId, page.Defaults);
+        }
+
         return controller;
     }
 
+    private static void BindPageButton(UiElement pageRoot, uint elementId, Action onClick)
+    {
+        if (UiElement.FindDescendant(pageRoot, elementId) is UiButton button)
+            button.OnClick = onClick;
+        else
+            Console.WriteLine(
+                $"[D.2b] OptionsPanelController: page 0x{pageRoot.DatElementId:X8}'s button "
+                + $"0x{elementId:X8} not found — its handler was not wired.");
+    }
+
     /// <summary>
     /// Activates the tab-switching behavior (idempotent — safe even if
     /// already active). Must run AFTER <see cref="Bind"/> so this