fix(chargen): Campaign CC CC6b-MOUNT review fix round — F1-F13

Fixes every finding from the dual-lens review of 34c6fceab0 (architectural
PASS-with-items, retail-fidelity FAIL). Re-derived every decomp citation
against docs/research/named-retail/acclient_2013_pseudo_c.txt directly
rather than trusting the reviewer's transcription.

Wrap/normalize semantics (F1): CycleIndex's decrement-from-Unset landed on
0; the decomp's shared decrement tail (label_47f065/label_47f6d9, the same
switch the headgear ring was ported from) computes new=cur-1=-2 on the raw
signed int32, which wraps to count-1 — matching headgear's own ring shape.
Also ports the spin body-click normalize-and-write-back retail's cases
0xa5-0xae all share (NormalizeChoiceOnSelect), which acdream had dropped
entirely. Flips the one test that pinned the wrong expectation and adds
select-zone coverage no prior test isolated.

Heritage gate (F3): Update's Gearknight/Olthoi/OlthoiAcid branches reset
SetChoice(FACE)/SetSelection(HAIR) unconditionally, not only when Clothes
was showing — a conditional gate stranded Nose/Mouth as the current part
under a Face-tab session.

Doc corrections propagated everywhere they repeated (F4, F5, F6, plus the
plan doc's own CC6b-MOUNT ledger row for F1/F3): the gmBarberUI heading
citation conflated PostInit with InitializePage; Random's Appearance
disable was mislabeled a placeholder when it's really AP-212's unported
RandomizeAppearance/RandomizeClothing gap; the master-page doc still called
the Appearance page content-inert after this campaign made it real.

Visual substitutions widened (F2): AP-215 named only two of the Appearance
page's swatch/spin substitutions. Ports the two cheap ones directly —
current-part highlight via SetSelection's SetState(1)/SetState(6), routed
through the existing UiButtonStateMachine.Normal/Highlight ids and
IUiDatStateful.TrySetRetailState seam (installed-DAT-confirmed
ToggleBehavior=true on all nine spins); the shade scrollbar's SetVisible(0)
for Eyes vs acdream's Enabled=false. Files the other five (DoColorSpots,
the inert GradCircle, spin-caption/heritage-caption loss, the Skin-spin
MoveTo reposition, the Gearknight-boundary randomize calls) as new register
rows AP-216..AP-220 and corrects the plan doc's false claim that AP-215
already named the GradCircle.

Unlocked DAT read (F7, BLOCKER): ChargenPreviewController.Rebuild called
ChargenAppearanceFactory.TryCompose outside _datLock while the very next
line correctly locked TryBuildAnimated — CC6a's own F4 class of bug,
reintroduced at this catalog's first production call site. Wrapped in the
same lock; documented the invariant on ChargenAppearanceCatalog itself.

One-shot preview mount (F8): LivePresentationComposition reads
ChargenPreviewViewportWidget once, but its underlying mount
(CharacterCreationUiMountCoordinator) is explicitly retryable while this
GPU-resource composition pass is not — unlike PaperdollViewportWidget,
which IS eager/non-retryable, so the "mirrors Paperdoll" doc claim was
false. Retrofitting cross-frame retry here would mean restructuring this
composition's one-shot contract for every private viewport (paperdoll,
creature appraisal) and FrameRootComposition's fixed frame-group array —
out of this round's blast radius. Corrected the doc and made the failure
loud (a diagnostic log) instead of silent.

Dispose leak (F9): ChargenPreviewController.Dispose left the preview
WorldEntity referenced by the leased renderer until the renderer's own,
later disposal. Releases it on its own teardown now.

Test-quality items (F10, F11, F13): pinned the spin arrow widths
(47px, both arrows) the 174 zone boundary is derived from, plus a
controller test for the previously-uncovered select zone. Measured the
shade scrollbar's authored orientation instead of assuming it — it is
VERTICAL (33x85) — which is a real production bug: UiScrollbar only routed
scalar-mode mouse events when Horizontal was true, so the shade control
never fired in production. Added OnVerticalScalarEvent/DrawVerticalScalar
mirroring the existing horizontal scalar path. Converted
ChargenPreviewControllerTests from silent-pass [Fact] to the shared
InstalledDatFactAttribute skip-reporting pattern.

Adjudication (F12): AD-101's retirement leaves TryBeginFinish's four local
refusals (NoName/AttributeCreditsUnspent/AlreadyPending/RosterFull) with no
heritage/gender gate — currently latent since Finish stays hard-disabled
this round. Amended the campaign plan's CC5 slice scope to require BOTH a
heritage/gender refusal AND a real RandomizeCharacter port before the
connected user gate opens Finish; noted the interaction on AP-214's own
register row. No CC5 implementation in this commit.

Gates: dotnet build -c Release green across the full solution. App suite
(Release, ACDREAM_PROBE_LIVE_MOUNT=1) 5223/3 skips, Runtime suite
1713/0 — both clean across repeated runs. A full-solution run surfaced
three pre-existing, previously-documented flakes unrelated to this change
(Streaming.LandblockBuildFactoryTests/LandblockPresentationPipelineTests
#402, Core.Net.Tests.NakEmissionTests loss soak) — each confirmed passing
in isolation, consistent with their known full-suite-parallelism-timing
history; none touch any file this commit changes.

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

tests/AcDream.App.Tests/UI/Layout/CharacterCreationLiveDatTests.cs

@@ -359,7 +359,17 @@ public sealed class CharacterCreationLiveDatTests
                      CharacterCreationAppearancePage.FootwearSpinId,
                  })
         {
-            AssertButton(appearanceRoot, spinId);
+            UiButton spin = AssertButton(appearanceRoot, spinId);
+            // Fix round F2 item 2: the current-part highlight
+            // (TrySetRetailState(Normal/Highlight)) only has a visible
+            // effect through UiButton's ToggleBehavior branch when the
+            // authored spin actually sets DAT property 0x0B — measured
+            // (not assumed, matching this file's own discipline for the
+            // arrow geometry above) True for all nine spins against the
+            // installed EoR dat. Pinned so a future DAT revision that
+            // drops it shows up here instead of as a silently-dead
+            // highlight.
+            Assert.True(spin.ToggleBehavior, $"spin 0x{spinId:X8} must author ToggleBehavior for the current-part highlight to work.");
         }
 
         // Every color-wheel-family id resolves through EXISTING
@@ -367,8 +377,20 @@ public sealed class CharacterCreationLiveDatTests
         // Type-3 fallback) — the risk-item-4 scouting result, pinned.
         foreach (uint swatchId in CharacterCreationAppearancePage.SwatchIds)
             AssertButton(appearanceRoot, swatchId);
-        Assert.IsType<UiScrollbar>(
+        UiScrollbar shadeScroll = Assert.IsType<UiScrollbar>(
             UiElement.FindDescendant(appearanceRoot, CharacterCreationAppearancePage.ShadeScrollId));
+        // Fix round F11: measured (not assumed) against the installed EoR
+        // dat — the shade scrollbar (0x10000321) is authored VERTICAL
+        // (33x85, taller than wide). Before this fix, UiScrollbar.OnEvent
+        // only routed to ScalarChanged when Horizontal was true, so mouse
+        // input on this control never reached SetShadeFromScalar in
+        // production. Pinned so a future DAT revision that flips this
+        // orientation is caught here rather than silently reintroducing the
+        // dead-input bug (UiScrollbar's OnVerticalScalarEvent handles this
+        // orientation now, but ONLY this orientation gets exercised in
+        // production).
+        Assert.False(shadeScroll.Horizontal);
+        Assert.True(shadeScroll.Height > shadeScroll.Width);
         Assert.IsType<UiDatElement>(
             UiElement.FindDescendant(appearanceRoot, CharacterCreationAppearancePage.GradCircleId));
 
@@ -426,6 +448,15 @@ public sealed class CharacterCreationLiveDatTests
             Assert.NotNull(increment);
             Assert.Equal(80f, decrement!.X);
             Assert.Equal(127f, increment!.X);
+            // Fix round F10: the arrow WIDTHS are what actually derive
+            // CharacterCreationAppearancePage.IncrementZoneEnd (174 =
+            // IncrementZoneStart 127 + this measured 47px width) — X alone
+            // pins the LEFT edge of each zone, not where the increment zone
+            // ends and the select-as-current-part body zone begins. Measured
+            // against the installed EoR dat: both arrows are 47px wide,
+            // uniformly, across all nine spins.
+            Assert.Equal(47f, decrement.Width);
+            Assert.Equal(47f, increment.Width);
         }
     }
 
@@ -457,7 +488,7 @@ public sealed class CharacterCreationLiveDatTests
     private static void AssertButton(ImportedLayout layout, uint elementId) =>
         Assert.IsType<UiButton>(layout.FindElement(elementId));
 
-    private static void AssertButton(UiElement root, uint elementId) =>
+    private static UiButton AssertButton(UiElement root, uint elementId) =>
         Assert.IsType<UiButton>(UiElement.FindDescendant(root, elementId));
 
     private static ImportedLayout BuildSelected(