fix(ui): FA4 re-review REOPEN — re-declare 0x00A6 from the post-world seam, not the pre-world reset

The FA4 fix round's MUST-FIX 3 placed the 0x00A6 reconnect re-arm at the
wrong lifecycle point (re-review 8bbceff5): ResetSessionTransientUi runs
via the SessionDialogs reset stage BEFORE _inWorld=true, so SetPanelOpen
(world-gated, Validate requireWorld:true) returned Inactive and published
nothing — yet _pageVisible was latched true anyway, so no later hook
re-declared and fellow vitals stayed frozen for the whole new session.
The unit test passed only because the fake recorded unconditionally.

Two-part fix, both retail-faithful mechanisms not suppressions:
- SocialFellowshipPageController.SetPageVisible advances the edge-trigger
  latch ONLY when the declaration is Accepted (published), so a dropped
  pre-world send leaves the latch clear and a later attempt retries.
- ResetSessionDeclaration (pre-world) now ONLY clears the latch; the new
  RedeclareAfterWorldEntry fires from the LiveSession EnteredWorld seam
  (wired via RestoreLayout, idempotent if a persisted layout already
  re-showed the page) so a still-open Fellowship page re-declares 0x00A6
  in world and vitals resume.

Regression pins that actually catch it (the prior test could not):
- SetPageVisible_DoesNotLatch_WhenDeclarationDropped_SoItRetriesInWorld
  (widget-level root, world-gated fake);
- Reconnect_ReDeclares0x00A6_AfterWorldEntry_NotDuringPreWorldReset +
  Reconnect_StaysSilent_WhenFellowshipPageIsNotActuallyOpen (panel-level,
  world-gated). RED-verified: reintroducing the pre-world declaration
  fails the reconnect test.

Full Release suite: 13,286 passed / 4 skipped / 0 failed.

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

src/AcDream.App/Net/LiveSessionRuntimeFactory.cs

@@ -157,7 +157,17 @@ internal sealed class LiveSessionRuntimeFactory
                 ClearCombat: _domain.Actions.Combat.Clear),
             EnteredWorld: new(
                 SetActiveCharacter: _interaction.Settings.SetActiveCharacter,
-                RestoreLayout: () => _ui.RetailUi?.RestoreLayout(),
+                RestoreLayout: () =>
+                {
+                    _ui.RetailUi?.RestoreLayout();
+                    // MUST-FIX 3 re-fix (FA4 re-review REOPEN): re-declare a
+                    // still-open Fellowship page's 0x00A6 now we are in world —
+                    // RestoreLayout is the post-world UI-restore moment, and
+                    // this is idempotent if RestoreLayout already re-showed the
+                    // page (the latch is already set). ResetSessionTransientUi
+                    // (pre-world) only cleared the latch.
+                    _ui.RetailUi?.RedeclareSocialPanelAfterWorldEntry();
+                },
                 SyncToolbar: () => _ui.RetailUi?.SyncToolbarWindowButtons(),
                 LoadCharacterSettings: _interaction.Settings.LoadCharacterContext,
                 ArmPlayerModeAutoEntry: _interaction.PlayerModeAutoEntry.Arm),