docs: CC6b-PRE re-review residuals R1/R2 + cross-branch renumbering

R1: the unsound elided-ctor-byte argument survived at its canonical
citation site (ChargenPreviewEntityBuilder's class doc, which the two
corrected docs point at) and in the ledger row's Deliverables column,
which contradicted its own review-status column. Both now carry the real
evidence: InitializePage @0x0047FDD0 writes an explicit m_bZoomedIn = 0
at 0x004802C3.

R2: the verified 180-degree initial heading (m_fCurHeading = 180f at
0x00480235 + SetPlayerHeading at 0x0048023F, cross-confirmed at
gmBarberUI::PostInit and the summary page) now has a durable home in the
CC6b-mount OWED list — without it the mount half ships a character
facing away from the camera.

Merge prep: the branch-local TS-82 renumbered to TS-84 (the CC4 branch
independently allocated TS-82 and landed first) and the branch-local
ISSUES #402 renumbered to #403 (same collision, same rule), with the
Core doc reference updated.

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

docs/ISSUES.md

@@ -24,7 +24,7 @@ What does NOT go here:
 - Every session: scan OPEN issues at start; promote/close anything we touched during the session before ending.
 - Promoting to a Phase: mark as `DONE (promoted to Phase X)` + commit SHA where the Phase entry landed.
 
-## #402 — Consolidate RetailAnimationCyclePlayback into LiveEntityAnimationPresenter's legacy branch
+## #403 — Consolidate RetailAnimationCyclePlayback into LiveEntityAnimationPresenter's legacy branch
 
 **Status:** OPEN (post-CC consolidation follow-up)
 **Severity:** LOW

src/AcDream.App/Rendering/ChargenPreviewEntityBuilder.cs

@@ -69,13 +69,15 @@ internal sealed class ChargenPreviewAnimatedBuild
 /// <b>CC6b:</b> retail's chargen preview does NOT default to a frozen pose —
 /// <c>gmCGAppearancePage::Update</c>'s own trailing gate
 /// (~0x0047EF01-0x0047EF12) calls <c>gmCG3DView::StartAnimation</c> (idle
-/// loop playing) whenever <c>m_bZoomedIn == 0</c>, and that field is never
-/// explicitly initialized away from its zero-initialized default in the
-/// ctor (<c>gmCGAppearancePage::gmCGAppearancePage</c>, pseudo-C
-/// ~0x0047CD58-0x0047CD64 — <c>m_bShouldZoomAnimate</c>/<c>m_bRotating</c>/
-/// <c>m_bZoomedIn</c> are three consecutive bool bytes the decompiler shows
-/// only the first two of, a known decompiler-elision class per
-/// <c>claude-memory/feedback_bn_decomp_field_names.md</c>). So retail's
+/// loop playing) whenever <c>m_bZoomedIn == 0</c>, and that default is
+/// DIRECTLY ASSIGNED, not inherited:
+/// <c>gmCGAppearancePage::InitializePage @0x0047FDD0</c> writes an
+/// explicit <c>m_bZoomedIn = 0</c> at <c>0x004802C3</c> (right after
+/// setting the camera to the zoomed-IN per-heritage eye at
+/// <c>0x00480286-0x0048029E</c> — the null-tween quirk the zoom
+/// controller's doc records). The earlier elided-ctor-byte argument was
+/// unsound (heap-new members are indeterminate, not zero) and was
+/// replaced by this citation at the CC6b-PRE re-review. So retail's
 /// chargen preview plays its idle loop (<c>m_didAnimation</c>, 30fps) from
 /// the very first frame; the REST pose (<c>m_didAnimationRest</c>, held
 /// final frame, this class's pre-CC6b-only behavior) only appears once the

src/AcDream.Core/Physics/RetailAnimationCyclePlayback.cs

@@ -35,7 +35,7 @@ namespace AcDream.Core.Physics;
 /// live, heavily tested production entity-rendering code with zero relation
 /// to this preview-only feature, so touching it is out of this slice's
 /// blast radius by design, not oversight). Tracked as
-/// <c>docs/ISSUES.md</c> #402 so the follow-up has an owner.
+/// <c>docs/ISSUES.md</c> #403 so the follow-up has an owner.
 /// </para>
 /// </summary>
 public static class RetailAnimationCyclePlayback