fix #394 #395 #396: OP8 re-gate round — caption font, retail key names, capture dialog

Three findings from the user's first Configure Keyboard look (OP8 gate,
2026-08-14), each root-caused against the named retail decomp:

- #394 row-caption font: the synthesized action-label UiText never set
  DatFont and fell to the debug bitmap font. The authored row template
  (0x21000009/0x1000002F, retail UIOption_ActionKeyMap) carries FontDid
  0x4000000A (18px serif) — Bind now takes resolveTemplateFont and applies
  the template's own authored font, resolved once per template pair.

- #395 key captions: raw enum spellings ("Shift+ShiftLeft") replaced by the
  port of CInputManager_WIN32::GetNameFromKey @0x00687F40 /
  GetNameFromKey_Internal @0x00687800 (RetailKeyNames): DAT string-table
  override by DIK-name hash (key enum 4 -> 0x2300000A, meta enum 5 ->
  0x2300000B, delimiter enum 3 -> 0x23000007 — GetDIDByEnum category 4,
  live-probed), else the OS keyboard layout's own key name ("SKIFT") via
  PlatformKeyNameProvider (Win32 GetKeyNameTextW — register row AD-96 for
  the DirectInput-vs-GetKeyNameText adaptation), else the DIK-suffix
  spelling. Bare modifier-key bindings show only the key name.

- #396 capture feedback: clicking a mapping button now opens retail's
  instruction dialog (InitiateBinding @0x004899D0 -> OpenMapWarnDialog
  @0x00488A00): a type-2 WAIT dialog on retail's MapWarn queue key
  0x10000001 with ID_ActionKeyMap_MapInstructions (0x23000004, ACTION
  variable interpolated), closed on key hit or ESC through the capture
  callback; capture is not armed if the dialog cannot open, matching
  retail. New RetailWaitDialogView (wait root 0x31 — same authored
  popup/message pair 0x3D/0x3E as the confirmation root, live-DAT probed)
  behind a shared IRetailDialogView presenter seam.

Probe evidence (env-gated, kept):
KeyboardConfigLiveMountProbeTests.ProbeKeyboardFontsAndKeyNameStrings.
Register: AD-96 filed. Gate script OP8 section updated (step 4 rewritten;
the "pressed/active state is enough" contract is retired).

Full Release solution suite green (13,424 passed / 4 skips).

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

src/AcDream.App/UI/RetailUiRuntime.cs

@@ -2628,7 +2628,44 @@ public sealed class RetailUiRuntime : IDisposable
                     DialogFactory.MakeConfirmation(
                         message,
                         data => onResult(data.GetBoolean(RetailDialogProperty.ConfirmationResult)));
-                }));
+                },
+                // OP8 re-gate (2026-08-14): retail's capture-instruction dialog
+                // (InitiateBinding @ 0x004899D0 → OpenMapWarnDialog @ 0x00488A00):
+                // a type-2 wait dialog on retail's own MapWarn queue key
+                // 0x10000001, text = ID_ActionKeyMap_MapInstructions (table
+                // 0x23000004) with the row's action label as its one ACTION
+                // variable. Same lazy DialogFactory read as ConfirmOverwrite.
+                OpenCaptureInstructions: actionLabel =>
+                {
+                    if (DialogFactory is null) return 0u;
+                    string? text = strings.ResolveTemplate(
+                        0x23000004u,
+                        "ID_ActionKeyMap_MapInstructions",
+                        new Dictionary<uint, string>
+                        {
+                            [DatStringResolver.ComputeHash("ACTION")] = actionLabel,
+                        });
+                    if (text is null) return 0u; // no invented English
+                    // The authored text stores its blank line as a literal
+                    // "\n\n" two-character escape (live-probed) — same
+                    // convention DatWidgetFactory/IndicatorDetailText already
+                    // unescape for other DAT-authored strings.
+                    text = text.Replace("\\n", "\n", StringComparison.Ordinal);
+                    return DialogFactory.MakeWait(text, queueKey: 0x10000001u);
+                },
+                CloseCaptureInstructions: context =>
+                    DialogFactory?.CloseDialog(context)),
+            resolveTemplateFont: (templateLayoutId, templateElementId) =>
+            {
+                lock (_bindings.Assets.DatLock)
+                {
+                    ElementInfo? templateInfo = LayoutImporter.ImportInfos(
+                        _bindings.Assets.Dats, templateLayoutId, templateElementId);
+                    return templateInfo is null || templateInfo.FontDid == 0u
+                        ? null
+                        : _bindings.Assets.ResolveFont(templateInfo.FontDid);
+                }
+            });
 
         if (controller is null)
         {