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>

docs/research/2026-08-12-campaign-fa-test-script.md

@@ -328,8 +328,12 @@ behavior when closed — [TWO-CLIENT], the `0x00A6` gate made observable
    step 7's damage-and-watch check). EXPECTED: vitals update normally on
    the new session, exactly as before the reconnect. BUG if vitals stay
    frozen for the rest of the new session — that means `0x00A6` was
-   never re-declared after the generation reset
+   never re-declared after the generation reset. (Re-review re-fix
-   (`SocialPanelController.ResetSessionDeclaration`).
+   2026-08-12: the re-declaration fires from the post-world
+   `EnteredWorld` seam via `SocialPanelController.RedeclareAfterWorldEntry`,
+   NOT the pre-world `ResetSessionDeclaration`, which only clears the
+   latch — declaring before world entry was silently dropped by the
+   world-gated command, the original defect.)
 10. **Your OWN row's vitals should always update** (your own vitals are
     driven by the existing player-vitals pipeline, not the fellowship
     `0x02C0` stream) — this is expected and not a sign that `0x00A6` is

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),

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

@@ -533,8 +533,18 @@ public sealed class SocialFellowshipPageController
     public void SetPageVisible(bool visible)
     {
         if (_pageVisible == visible) return;
-        _pageVisible = visible;
+        // MUST-FIX 3 re-fix (FA4 re-review REOPEN, 2026-08-12): advance the
-        _bindings.SetPanelOpen(visible);
+        // edge-trigger latch ONLY when the 0x00A6 declaration was actually
+        // published (Accepted). A generation reset runs BEFORE the
+        // reconnected session is in world, so this command is world-gated and
+        // returns Inactive there — publishing nothing. The original fix
+        // latched unconditionally, leaving `_pageVisible = true` while the
+        // fresh server was never told, so the intended post-world
+        // re-declaration became a no-op (already latched) and fellow vitals
+        // stayed frozen. Leaving the latch untouched on a dropped publish
+        // lets RedeclareAfterWorldEntry retry exactly once, in world.
+        if (_bindings.SetPanelOpen(visible).Status == RuntimeCommandStatus.Accepted)
+            _pageVisible = visible;
     }
 
     /// <summary>

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

@@ -280,26 +280,34 @@ public sealed class SocialPanelController : IRetainedPanelController
         _fellowship?.SetPageVisible(_visible && IsShowingFellowship);
 
     /// <summary>
-    /// MUST-FIX 3 (FA4 fix round, 2026-08-12): called from
+    /// MUST-FIX 3 (FA4 fix round, 2026-08-12) — the PRE-WORLD half. Called
-    /// <see cref="RetailUiRuntime.ResetSessionTransientUi"/> — a seam that
+    /// from <see cref="RetailUiRuntime.ResetSessionTransientUi"/>, a seam
-    /// already runs on every generation reset — to re-arm the Fellowship
+    /// that runs on every generation reset BEFORE the new session is in
-    /// page's <c>0x00A6</c> edge-trigger latch. <see cref="SocialPanelController"/>
+    /// world. <see cref="SocialPanelController"/> is process-lifetime and the
-    /// is process-lifetime and the latch
+    /// Fellowship page's <c>0x00A6</c> latch survives a reconnect unchanged,
-    /// (<see cref="SocialFellowshipPageController.SetPageVisible"/>) is
+    /// so it must be re-armed for the fresh session — but ONLY CLEARED here.
-    /// edge-triggered on a bool that survives a reconnect unchanged, so
+    /// It must NOT re-declare from this seam: <c>SetPanelOpen</c> is
-    /// without this a still-open Fellowship page never re-declares
+    /// world-gated, so a re-declaration attempted before world entry is
-    /// <c>0x00A6</c> on the fresh session and every fellow's vitals freeze
+    /// dropped (Inactive). The actual re-declaration is
-    /// for its remaining lifetime. Clears the latch, then re-evaluates the
+    /// <see cref="RedeclareAfterWorldEntry"/>, wired to the post-world
-    /// SAME D4 conjunction <see cref="OnShown"/>/<see cref="OnHidden"/>/tab
+    /// <c>EnteredWorld</c> seam (FA4 re-review REOPEN, 2026-08-12).
-    /// switches use — a still-open Fellowship page re-declares; a closed or
-    /// other-tab page correctly stays silent (the conjunction is false, so
-    /// the now-cleared latch is simply left at its default).
     /// </summary>
-    public void ResetSessionDeclaration()
+    public void ResetSessionDeclaration() => _fellowship?.ResetPageVisibleLatch();
-    {
+
-        _fellowship?.ResetPageVisibleLatch();
+    /// <summary>
-        UpdateFellowshipPageVisibility();
+    /// MUST-FIX 3 (FA4 fix round) — the POST-WORLD half. Wired to the
-    }
+    /// LiveSession <c>EnteredWorld</c> seam, so it runs after a (re)connect
+    /// has entered world and <c>SetPanelOpen</c> is Accepted. Re-evaluates
+    /// the same D4 conjunction <see cref="OnShown"/>/<see cref="OnHidden"/>/
+    /// tab switches use: a still-open Fellowship page re-declares
+    /// <c>0x00A6</c> to the fresh server and fellow vitals resume; a closed
+    /// or other-tab page stays silent (the conjunction is false, so the
+    /// latch <see cref="ResetSessionDeclaration"/> cleared is left at its
+    /// default). Idempotent — if a persisted layout already re-showed the
+    /// page and <see cref="OnShown"/> re-declared, the latch is already set
+    /// and this is a no-op.
+    /// </summary>
+    public void RedeclareAfterWorldEntry() => UpdateFellowshipPageVisibility();
 
     /// <summary>
     /// Per-frame poll: the Fellowship/Allegiance empty-state gates (no

src/AcDream.App/UI/RetailUiRuntime.cs

@@ -749,6 +749,14 @@ public sealed class RetailUiRuntime : IDisposable
         SocialPanelController?.ResetSessionDeclaration();
     }
 
+    /// <summary>MUST-FIX 3 re-fix (FA4 re-review REOPEN, 2026-08-12): wired to
+    /// the LiveSession <c>EnteredWorld</c> seam so a still-open Fellowship
+    /// page re-declares its <c>0x00A6</c> panel-open state AFTER a (re)connect
+    /// is in world — <see cref="ResetSessionTransientUi"/> runs pre-world and
+    /// only cleared the latch, and <c>SetPanelOpen</c> is world-gated.</summary>
+    public void RedeclareSocialPanelAfterWorldEntry() =>
+        SocialPanelController?.RedeclareAfterWorldEntry();
+
     public void UpdateCursor(IEnumerable<IMouse> mice)
     {
         CursorFeedback feedback = _bindings.Cursor.Feedback.Update(Host.Root);

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

@@ -116,6 +116,7 @@ public sealed class SocialFellowshipPageControllerTests
     }
 
     private static readonly RuntimeCommandResult InactiveResult = new(RuntimeCommandStatus.Inactive, default);
+    private static readonly RuntimeCommandResult AcceptedResult = new(RuntimeCommandStatus.Accepted, default);
 
     private sealed class FellowshipBindingsBuilder
     {
@@ -127,6 +128,11 @@ public sealed class SocialFellowshipPageControllerTests
         public uint LocalPlayerGuid;
         public Func<uint, uint, UiElement?> TemplateResolver = FakeRowResolver;
         public Func<uint, uint, string?> ResolveString = static (_, _) => null;
+        // SetPanelOpen (0x00A6) is the one command whose CONTROLLER behavior
+        // depends on the result status (MUST-FIX 3 re-fix: the latch advances
+        // only on Accepted). Default in-world so the edge-trigger tests model
+        // production; a test flips this false to simulate a pre-world reset.
+        public bool PanelOpenInWorld = true;
 
         public SocialFellowshipPageController.Bindings Build() => new(
             Snapshot: () => Snapshot,
@@ -138,7 +144,7 @@ public sealed class SocialFellowshipPageControllerTests
             Quit: disband => { Calls.Add($"quit:{disband}"); return InactiveResult; },
             AssignLeader: guid => { Calls.Add($"assign-leader:{guid:X8}"); return InactiveResult; },
             SetOpen: isOpen => { Calls.Add($"set-open:{isOpen}"); return InactiveResult; },
-            SetPanelOpen: panelOpen => { Calls.Add($"set-panel-open:{panelOpen}"); return InactiveResult; },
+            SetPanelOpen: panelOpen => { Calls.Add($"set-panel-open:{panelOpen}"); return PanelOpenInWorld ? AcceptedResult : InactiveResult; },
             Selection: Selection,
             LocalPlayerGuid: () => LocalPlayerGuid,
             CurrentCharacterOption: id => Options.TryGetValue(id, out bool v) && v,
@@ -758,4 +764,32 @@ public sealed class SocialFellowshipPageControllerTests
         controller.SetPageVisible(false);
         Assert.Contains("set-panel-open:False", b.Calls);
     }
+
+    [Fact]
+    public void SetPageVisible_DoesNotLatch_WhenDeclarationDropped_SoItRetriesInWorld()
+    {
+        // MUST-FIX 3 re-fix (FA4 re-review REOPEN): a declaration attempted
+        // before world entry is dropped (Inactive). The latch must NOT advance
+        // on a dropped publish — otherwise the in-world retry is deduplicated
+        // away and the server never learns the panel is open (fellow vitals
+        // freeze). This is the widget-level root of the reconnect bug.
+        UiElement root = BuildPageRoot(out _, out _);
+        var b = new FellowshipBindingsBuilder
+        {
+            Snapshot = new RuntimeFellowshipSnapshot { IsInFellowship = true },
+            PanelOpenInWorld = false, // pre-world: SetPanelOpen returns Inactive
+        };
+        SocialFellowshipPageController controller = SocialFellowshipPageController.Bind(root, b.Build())!;
+        b.Calls.Clear();
+
+        controller.SetPageVisible(true);
+        Assert.Contains("set-panel-open:True", b.Calls); // attempted, dropped
+        b.Calls.Clear();
+
+        // In world now: the SAME visible=true re-attempts (not deduplicated,
+        // because the dropped attempt never latched) and this time it sticks.
+        b.PanelOpenInWorld = true;
+        controller.SetPageVisible(true);
+        Assert.Contains("set-panel-open:True", b.Calls);
+    }
 }

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

@@ -19,6 +19,8 @@ public sealed class SocialPanelControllerTests
 {
     private static readonly RuntimeCommandResult InactiveResult =
         new(RuntimeCommandStatus.Inactive, default);
+    private static readonly RuntimeCommandResult AcceptedResult =
+        new(RuntimeCommandStatus.Accepted, default);
 
     /// <summary>Campaign FA slice FA4: the Fellowship page's full read/write
     /// seam. Every command records its call (by name) into
@@ -35,9 +37,14 @@ public sealed class SocialPanelControllerTests
         uint localPlayerGuid = 0u,
         Func<CharacterOptionId, bool>? currentCharacterOption = null,
         Func<uint, uint, UiElement?>? templateResolver = null,
-        Func<uint, uint, string?>? resolveString = null)
+        Func<uint, uint, string?>? resolveString = null,
+        Func<bool>? panelOpenInWorld = null)
     {
         calls ??= new List<string>();
+        // SetPanelOpen (0x00A6) is world-gated in production; only its result
+        // status feeds the MUST-FIX 3 latch. Default in-world (Accepted) so
+        // the D4-conjunction tests model production; a reconnect test flips it.
+        Func<bool> inWorld = panelOpenInWorld ?? (static () => true);
         return new SocialFellowshipPageController.Bindings(
             Snapshot: () => snapshot,
             Members: () => members ?? [],
@@ -48,7 +55,7 @@ public sealed class SocialPanelControllerTests
             Quit: disband => { calls.Add($"fellowship-quit:{disband}"); return InactiveResult; },
             AssignLeader: guid => { calls.Add($"fellowship-assign-leader:{guid:X8}"); return InactiveResult; },
             SetOpen: isOpen => { calls.Add($"fellowship-set-open:{isOpen}"); return InactiveResult; },
-            SetPanelOpen: panelOpen => { calls.Add($"fellowship-set-panel-open:{panelOpen}"); return InactiveResult; },
+            SetPanelOpen: panelOpen => { calls.Add($"fellowship-set-panel-open:{panelOpen}"); return inWorld() ? AcceptedResult : InactiveResult; },
             Selection: selection ?? new SelectionState(),
             LocalPlayerGuid: () => localPlayerGuid,
             CurrentCharacterOption: currentCharacterOption ?? (_ => false),
@@ -61,12 +68,13 @@ public sealed class SocialPanelControllerTests
         RuntimeFellowshipSnapshot fellowship = default,
         RuntimeAllegianceSnapshot allegiance = default,
         FriendsState? friends = null,
-        SquelchState? squelch = null)
+        SquelchState? squelch = null,
+        Func<bool>? panelOpenInWorld = null)
     {
         calls ??= new List<string>();
         return new SocialPanelController.Callbacks(
             Toggle: () => calls.Add("toggle"),
-            Fellowship: MakeFellowshipBindings(calls, fellowship),
+            Fellowship: MakeFellowshipBindings(calls, fellowship, panelOpenInWorld: panelOpenInWorld),
             AllegianceSnapshot: () => allegiance,
             Friends: friends ?? new FriendsState(),
             Squelch: squelch ?? new SquelchState(),
@@ -538,49 +546,73 @@ public sealed class SocialPanelControllerTests
     }
 
     /// <summary>
-    /// MUST-FIX 3 (FA4 fix round) — a generation reset (reconnect) while
+    /// MUST-FIX 3 (FA4 fix round) + its re-review REOPEN re-fix: a reconnect
-    /// the Fellowship page is still open must re-declare <c>0x00A6</c> on
+    /// while the Fellowship page stays open must re-declare <c>0x00A6</c> on
-    /// the fresh session, not silently stay latched from the old one.
+    /// the fresh session — but ONLY AFTER world entry. The generation reset
+    /// (<see cref="SocialPanelController.ResetSessionDeclaration"/>) runs
+    /// BEFORE the new session is in world, where <c>SetPanelOpen</c> is
+    /// dropped (Inactive); it must only clear the latch. The re-declaration
+    /// is <see cref="SocialPanelController.RedeclareAfterWorldEntry"/>, wired
+    /// to the post-world <c>EnteredWorld</c> seam. The original fix declared
+    /// from the pre-world reset — the fake recorded a send the real
+    /// world-gated command would have dropped, so the roster stayed frozen.
     /// </summary>
     [Fact]
-    public void ResetSessionDeclaration_ReArms0x00A6_ForAStillOpenFellowshipPage()
+    public void Reconnect_ReDeclares0x00A6_AfterWorldEntry_NotDuringPreWorldReset()
     {
         var calls = new List<string>();
+        bool inWorld = true;
         ImportedLayout layout = FixtureLoader.LoadSocialPanelHost();
         SocialPanelController? controller = SocialPanelController.Bind(
             layout,
-            MakeCallbacks(calls, fellowship: new RuntimeFellowshipSnapshot { IsInFellowship = true }));
+            MakeCallbacks(
+                calls,
+                fellowship: new RuntimeFellowshipSnapshot { IsInFellowship = true },
+                panelOpenInWorld: () => inWorld));
         Assert.NotNull(controller);
         controller!.ActivateTabs();
         controller.OnShown();
         controller.ShowFellowship();
-        Assert.Contains("fellowship-set-panel-open:True", calls);
+        Assert.Contains("fellowship-set-panel-open:True", calls); // declared in world
         calls.Clear();
 
-        // Simulate a reconnect: generation reset while the panel stays open
+        // Reconnect: the generation reset runs BEFORE the new session is in
-        // on the Fellowship tab (nothing else in this controller changes).
+        // world. The pre-world reset must leave NO published 0x00A6 (the
+        // REOPEN bug latched a dropped send here and never retried).
+        inWorld = false;
         controller.ResetSessionDeclaration();
+        Assert.DoesNotContain(calls, c => c.StartsWith("fellowship-set-panel-open"));
 
+        // World entry: the post-world seam re-declares, now Accepted.
+        inWorld = true;
+        controller.RedeclareAfterWorldEntry();
         Assert.Contains("fellowship-set-panel-open:True", calls);
     }
 
     /// <summary>MUST-FIX 3's counterpart: a reconnect while the panel is
-    /// closed (or on a different tab) must NOT spuriously declare
+    /// closed (or on a different tab) must NOT declare <c>0x00A6</c> true,
-    /// <c>0x00A6</c> true.</summary>
+    /// even after world entry.</summary>
     [Fact]
-    public void ResetSessionDeclaration_StaysSilent_WhenFellowshipPageIsNotActuallyOpen()
+    public void Reconnect_StaysSilent_WhenFellowshipPageIsNotActuallyOpen()
     {
         var calls = new List<string>();
+        bool inWorld = true;
         ImportedLayout layout = FixtureLoader.LoadSocialPanelHost();
         SocialPanelController? controller = SocialPanelController.Bind(
             layout,
-            MakeCallbacks(calls, fellowship: new RuntimeFellowshipSnapshot { IsInFellowship = true }));
+            MakeCallbacks(
+                calls,
+                fellowship: new RuntimeFellowshipSnapshot { IsInFellowship = true },
+                panelOpenInWorld: () => inWorld));
         Assert.NotNull(controller);
-        controller!.ActivateTabs(); // default tab: Allegiance
+        controller!.ActivateTabs(); // default tab: Allegiance (Fellowship not active)
         controller.OnShown();
         calls.Clear();
 
+        inWorld = false;
         controller.ResetSessionDeclaration();
+        inWorld = true;
+        controller.RedeclareAfterWorldEntry();
 
         Assert.DoesNotContain(calls, c => c.StartsWith("fellowship-set-panel-open"));
     }