feat(ui): AD-109 — arm the login wormhole at the char-select Enter click

USER-DIRECTED deviation from retail (register row AD-109, same commit):
retail presents the empty pre-player gameplay screen — black behind the
retained UI — from the Enter click (CPlayerSystem::LogOnCharacter
@0x0055F890 -> CM_Login::SendNotice_BeginEnterWorld @0x006AD810, UI mode
0x10000008) until CreatePlayer raises SmartBox::teleport_in_progress
@0x00451C20 and gmSmartBoxUI::UseTime @0x004D6EAB begins TAS_TUNNEL. The
user prefers the tunnel to cover that whole wait.

- ILocalPlayerTeleportNetworkSink.ArmLoginTunnel: begins the login
  wormhole presentation at the Enter click, consuming the sequencer's
  begin-edge events SYNCHRONOUSLY (the Enter command blocks the update
  thread for the whole ServerReady round trip, so a deferred first tick
  would leave exactly the black window this deviation removes). The
  enter cue plays at the click: retail's own rule is cue-at-animation-
  begin (Sound_UI_EnterPortal @0x004D638E, unconditional inside
  BeginTeleportAnimation), and the animation begin moved to the click.
- Armed pre-reveal pump: tunnel animates across the round trip
  (worldReady pinned false, sequencer holds in Tunnel); the hold clock
  accumulates from the click.
- Adoption: the Runtime login reveal ADOPTS the running presentation
  (no re-Begin, no second cue); rejected EnterWorld (lifecycle back to
  AwaitingSelection) disarms and retires the tunnel.
- Wired at the ONE host edge every entry route shares:
  ILiveSessionLifecycleHost.ApplySelectedCharacter (direct connect,
  roster Enter, enter-after-create) via
  LiveSessionSelectionBindings.ArmLoginTunnel (default no-op keeps
  headless and every existing construction site unchanged).
- ILocalPlayerLoginLifecycleSource: typed seam (not a stored delegate —
  the frame-phase owner delegate-field guard) projecting the Runtime
  character-selection lifecycle for the disarm edge.
- Frame contract update: [login-frames] over a login is tunnel -> world
  from the click — no void, and no black between click and world.

Tests: 4 new armed-tunnel tests (arm/adopt/disarm/frame-shape); App
suite live-DAT 5516 passed / 3 skipped (baseline 5512/3 + 4 new).

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

src/AcDream.App/Composition/SessionPlayerComposition.cs

@@ -1020,7 +1020,12 @@ internal sealed class SessionPlayerCompositionPhase
                 presentation,
                 // C4 route 3: the portal arm shares route 2's Runtime
                 // SetPosition drive controller.
-                acceptedPositionDrive);
+                acceptedPositionDrive,
+                // Enter-click round (2026-08-17): resolved per call — the
+                // armed pre-reveal tunnel projects the Runtime
+                // character-selection lifecycle to disarm on a rejected
+                // EnterWorld (see the controller's field doc).
+                new RuntimeLoginLifecycleSource(d.Runtime));
 
         LocalPlayerTeleportController CreateLocalTeleportWithTunnel(
             PortalTunnelPresentation portalTunnel)

src/AcDream.App/Net/LiveSessionRuntimeFactory.cs

@@ -188,7 +188,13 @@ internal sealed class LiveSessionRuntimeFactory
                 SetChatIdentity: _domain.Communication.Chat.SetLocalPlayerGuid,
                 MarkPersistent: _world.WorldState.MarkPersistent,
                 SetVanishProbeIdentity: id => EntityVanishProbe.PlayerGuid = id,
-                ClearCombat: _domain.Actions.Combat.Clear),
+                ClearCombat: _domain.Actions.Combat.Clear,
+                // Enter-click round (2026-08-17): the login wormhole arms at
+                // the selected-character edge — before the EnterWorld wire
+                // send on every entry route — so the tunnel covers the whole
+                // server round-trip (registered deviation; retail shows
+                // black until CreatePlayer).
+                ArmLoginTunnel: _world.Teleport.ArmLoginTunnel),
             EnteredWorld: new(
                 SetActiveCharacter: _interaction.Settings.SetActiveCharacter,
                 RestoreLayout: () =>

src/AcDream.App/Rendering/LoginPresentationFrameProbe.cs

@@ -15,9 +15,14 @@ internal static class RenderPresentationDiagnostics
     /// classification for the login wormhole edges. When set, every completed
     /// render frame is classified by WHAT PRESENTED — <c>world</c> /
     /// <c>tunnel</c> / <c>black</c> / <c>void</c> — and a <c>[login-frames]</c>
-    /// line is written on every classification transition. The gate contract
-    /// is retail's: the sequence over a login must contain NO <c>void</c>
-    /// entry on either edge (black → tunnel → world, each swap atomic).
+    /// line is written on every classification transition. The gate contract:
+    /// the sequence over a login must contain NO <c>void</c> entry on either
+    /// edge, and — since the enter-click round's click-armed tunnel
+    /// (registered deviation from retail's pre-CreatePlayer black) — no
+    /// <c>black</c> entry between the Enter click and the world either: the
+    /// sequence from the click is tunnel → world, each swap atomic.
+    /// (<c>black</c> remains legal BEFORE the click — it is the
+    /// character-select screen's own backdrop.)
     /// Not a user setting; not in <c>RuntimeOptions</c>; not persisted.
     /// </summary>
     public static bool ProbeLoginFrames { get; } =

src/AcDream.App/Rendering/RenderFrameResourceController.cs

@@ -160,8 +160,18 @@ internal sealed class LocalPlayerTeleportRenderStateSource
     /// backdrop had no retail counterpart and presented as the gate's
     /// entry-edge VOID (2026-08-17). Both flags flip on the update thread
     /// (the login activation tick flips ChaseModeEverEntered AND makes the
-    /// tunnel visible before the next render), so the black → tunnel → world
+    /// tunnel visible before the next render), so the cover → tunnel → world
     /// sequence swaps atomically per frame.
+    ///
+    /// <para>
+    /// Enter-click round (2026-08-17): with the click-armed login tunnel
+    /// (registered user-directed deviation — see
+    /// <c>ILocalPlayerTeleportNetworkSink.ArmLoginTunnel</c>) the tunnel
+    /// scene becomes visible AT the Enter click, so retail's bare-black
+    /// CreatePlayer window normally never presents; the second arm remains
+    /// the char-select backdrop and the fallback for any unarmed pre-world
+    /// frame.
+    /// </para>
     /// </summary>
     public bool IsPortalViewportVisible =>
         _teleport.IsPortalViewportVisible || _login.IsWaitingForLogin;

src/AcDream.App/Streaming/LocalPlayerTeleportController.cs

@@ -40,6 +40,24 @@ internal interface ILocalPlayerTeleportNetworkSink
     /// </summary>
     void OnLocalPlayerFirstEntryCompleted();
 
+    /// <summary>
+    /// Enter-click round (2026-08-17): arm the login wormhole PRESENTATION at
+    /// the character-select Enter click (and its direct-connect /
+    /// enter-after-create equivalents), BEFORE the EnterWorld server
+    /// round-trip. This is a REGISTERED user-directed deviation from retail:
+    /// retail shows the empty pre-player gameplay screen (black behind the
+    /// UI) from <c>CPlayerSystem::LogOnCharacter @ 0x0055F890</c> /
+    /// <c>CM_Login::SendNotice_BeginEnterWorld @ 0x006AD810</c> until
+    /// CreatePlayer flips <c>SmartBox::teleport_in_progress @ 0x00451C20</c>
+    /// and <c>gmSmartBoxUI::UseTime @ 0x004D6EAB</c> begins TAS_TUNNEL. The
+    /// user prefers the tunnel to cover that whole wait — see the divergence
+    /// register row added with this method. Invoked from the ONE host edge
+    /// every entry route shares: <c>ILiveSessionLifecycleHost
+    /// .ApplySelectedCharacter</c>, which runs immediately before the
+    /// EnterWorld wire send on all three routes.
+    /// </summary>
+    void ArmLoginTunnel();
+
     void ResetSession();
 
     void ResetGenerationPresentation();
@@ -83,6 +101,8 @@ internal sealed class DeferredLocalPlayerTeleportNetworkSink
     public void OnLocalPlayerFirstEntryCompleted() =>
         Required().OnLocalPlayerFirstEntryCompleted();
 
+    public void ArmLoginTunnel() => Required().ArmLoginTunnel();
+
     public void ResetSession() => Required().ResetSession();
 
     public void ResetGenerationPresentation() =>
@@ -141,6 +161,30 @@ internal interface ILocalPlayerTeleportAuthority
     bool IsFreshStart(ushort sequence);
 }
 
+/// <summary>
+/// Enter-click round (2026-08-17): the armed pre-reveal login tunnel's read
+/// of the Runtime character-selection lifecycle (a typed seam, not a stored
+/// delegate — frame-phase owners hold no delegate fields per the GameWindow
+/// decomposition invariant). Resolved per call against the live owner.
+/// </summary>
+internal interface ILocalPlayerLoginLifecycleSource
+{
+    RuntimeCharacterSelectionLifecycle SelectionLifecycle { get; }
+}
+
+/// <summary>Production adapter over the canonical GameRuntime owner.</summary>
+internal sealed class RuntimeLoginLifecycleSource
+    : ILocalPlayerLoginLifecycleSource
+{
+    private readonly GameRuntime _runtime;
+
+    public RuntimeLoginLifecycleSource(GameRuntime runtime) =>
+        _runtime = runtime ?? throw new ArgumentNullException(nameof(runtime));
+
+    public RuntimeCharacterSelectionLifecycle SelectionLifecycle =>
+        _runtime.CharacterSelection.Snapshot.Lifecycle;
+}
+
 internal sealed class LiveLocalPlayerTeleportAuthority
     : ILocalPlayerTeleportAuthority
 {
@@ -499,6 +543,18 @@ internal sealed class LocalPlayerTeleportController
     private long _loginRevealGeneration;
     private bool _loginPresentationActive;
 
+    /// <summary>
+    /// Enter-click round (2026-08-17): true while the login tunnel is armed
+    /// PRE-REVEAL — from the character-select Enter click (host edge
+    /// <c>ApplySelectedCharacter</c>, shared by direct connect, roster Enter,
+    /// and enter-after-create) until the Runtime login reveal adopts the
+    /// running presentation, or the enter transaction falls back to character
+    /// select (rejected EnterWorld), or a session/teleport reset withdraws
+    /// it. Registered deviation from retail's pre-CreatePlayer black — see
+    /// <see cref="ILocalPlayerTeleportNetworkSink.ArmLoginTunnel"/>.
+    /// </summary>
+    private bool _loginTunnelArmed;
+
     /// <summary>
     /// Latched by <see cref="OnLocalPlayerFirstEntryCompleted"/> — the
     /// first-entry conductor's canonical initial placement committed. The
@@ -511,6 +567,18 @@ internal sealed class LocalPlayerTeleportController
     private bool _loginPlacementCompleted;
     private float _loginHoldSeconds;
 
+    /// <summary>
+    /// Enter-click round (2026-08-17): resolved PER CALL (never captured —
+    /// claude-memory/feedback_resolve_deferred_funcs_per_call.md). The armed
+    /// pre-reveal tunnel projects the Runtime character-selection lifecycle:
+    /// <c>EnteringWorld</c>/<c>InWorld</c> keep it armed; a regression to
+    /// <c>AwaitingSelection</c> (rejected EnterWorld —
+    /// <c>LiveSessionController.EnterHighlightedCore</c>'s
+    /// <c>ReturnToSelection</c>) disarms it so the user is not left staring
+    /// at a tunnel on the character-select screen.
+    /// </summary>
+    private readonly ILocalPlayerLoginLifecycleSource _loginLifecycle;
+
     public LocalPlayerTeleportController(
         ILocalPlayerTeleportAuthority authority,
         ILocalPlayerTeleportInputLifetime input,
@@ -521,7 +589,8 @@ internal sealed class LocalPlayerTeleportController
         ILocalPlayerTeleportPlacement placement,
         ILocalPlayerTeleportSession session,
         ILocalPlayerTeleportPresentation presentation,
-        RuntimeAcceptedPositionDriveController acceptedPositionDrive)
+        RuntimeAcceptedPositionDriveController acceptedPositionDrive,
+        ILocalPlayerLoginLifecycleSource loginLifecycle)
     {
         _authority = authority ?? throw new ArgumentNullException(nameof(authority));
         _input = input ?? throw new ArgumentNullException(nameof(input));
@@ -534,6 +603,8 @@ internal sealed class LocalPlayerTeleportController
         _presentation = presentation ?? throw new ArgumentNullException(nameof(presentation));
         _acceptedPositionDrive = acceptedPositionDrive
             ?? throw new ArgumentNullException(nameof(acceptedPositionDrive));
+        _loginLifecycle = loginLifecycle
+            ?? throw new ArgumentNullException(nameof(loginLifecycle));
     }
 
     public bool IsActive => _transit.IsTeleportActive;
@@ -610,6 +681,93 @@ internal sealed class LocalPlayerTeleportController
         _loginPlacementCompleted = true;
     }
 
+    /// <summary>
+    /// Enter-click round (2026-08-17): begin the login tunnel PRESENTATION at
+    /// the Enter click, before the EnterWorld server round-trip (registered
+    /// user-directed deviation — retail presents black here; see
+    /// <see cref="ILocalPlayerTeleportNetworkSink.ArmLoginTunnel"/>).
+    ///
+    /// <para>
+    /// The enter cue plays HERE, at the click: retail's rule is "cue at the
+    /// animation begin" (<c>gmSmartBoxUI::BeginTeleportAnimation</c> plays
+    /// <c>Sound_UI_EnterPortal</c> unconditionally at <c>0x004D638E</c>), and
+    /// this deviation moves the animation begin to the click — so the cue
+    /// moves with it, keeping cue-and-tunnel continuous instead of splitting
+    /// them across the round-trip.
+    /// </para>
+    ///
+    /// <para>
+    /// The first sequencer tick is consumed SYNCHRONOUSLY (dt = 0) rather
+    /// than left to the frame pump: the Enter command that follows this call
+    /// blocks the update thread for the whole ServerReady round-trip
+    /// (<c>WorldSession.EnterWorldCore</c>), so a deferred first tick would
+    /// leave the frame black for exactly the wait this deviation exists to
+    /// cover. The render thread draws the tunnel scene independently every
+    /// frame once it is visible.
+    /// </para>
+    /// </summary>
+    public void ArmLoginTunnel()
+    {
+        ThrowIfDisposed();
+        if (_loginTunnelArmed
+            || _loginPresentationActive
+            || _transit.IsTeleportActive
+            || _transit.HasPendingTeleportStart)
+        {
+            return;
+        }
+
+        long generation = _lifetimeGeneration;
+        _presentation.Begin(_mode.Projection);
+        if (_lifetimeGeneration != generation)
+            return;
+
+        var (_, events) = _presentation.Tick(0f, worldReady: false);
+        if (_lifetimeGeneration != generation)
+            return;
+        if (!ProcessArmedLoginTunnelEvents(events, generation))
+            return;
+
+        _loginTunnelArmed = true;
+        _loginHoldSeconds = 0f;
+        Console.WriteLine("live: login tunnel armed at enter click");
+    }
+
+    /// <summary>
+    /// The armed pre-reveal tunnel's event consumer — only the two
+    /// begin-edge events can occur while <c>worldReady</c> is pinned false
+    /// (the sequencer holds in Tunnel); anything else is ignored. Returns
+    /// false when a nested callback retired this lifetime.
+    /// </summary>
+    private bool ProcessArmedLoginTunnelEvents(
+        IReadOnlyList<TeleportAnimEvent> events,
+        long generation)
+    {
+        foreach (TeleportAnimEvent teleportEvent in events)
+        {
+            switch (teleportEvent)
+            {
+                case TeleportAnimEvent.PlayEnterSound:
+                    Console.WriteLine(
+                        "live: login portal-space enter cue "
+                        + "(Sound_UI_EnterPortal)");
+                    _presentation.PlayEnterCue();
+                    if (_lifetimeGeneration != generation)
+                        return false;
+                    break;
+                case TeleportAnimEvent.EnterTunnel:
+                    _presentation.EnterTunnel();
+                    if (_lifetimeGeneration != generation)
+                        return false;
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        return true;
+    }
+
     public void Tick(float deltaSeconds)
     {
         ThrowIfDisposed();
@@ -1066,14 +1224,26 @@ internal sealed class LocalPlayerTeleportController
             return;
         }
 
+        // Enter-click round (2026-08-17): a click-armed tunnel is ADOPTED,
+        // not restarted — the presentation is already running (sequencer in
+        // its Tunnel hold, tunnel scene visible, enter cue already played at
+        // the click), so re-Begin here would restart the sequencer and
+        // double-fire the begin-edge events. The hold clock also carries
+        // over: the user's wait began at the click.
+        bool adoptedArmedTunnel = _loginTunnelArmed;
+        _loginTunnelArmed = false;
         _loginRevealGeneration = snapshot.Generation;
         _loginPresentationActive = true;
-        _loginHoldSeconds = 0f;
-        _presentation.Begin(_mode.Projection);
+        if (!adoptedArmedTunnel)
+        {
+            _loginHoldSeconds = 0f;
+            _presentation.Begin(_mode.Projection);
+        }
         Console.WriteLine(
             $"live: login portal-space presentation started "
             + $"(gen={snapshot.Generation} "
-            + $"cell=0x{snapshot.Readiness.DestinationCell:X8})");
+            + $"cell=0x{snapshot.Readiness.DestinationCell:X8} "
+            + $"adoptedArmedTunnel={(adoptedArmedTunnel ? 1 : 0)})");
     }
 
     /// <summary>
@@ -1108,9 +1278,20 @@ internal sealed class LocalPlayerTeleportController
                 // through TryActivateLoginPresentation above.
                 _loginRevealGeneration = 0;
                 _loginPresentationActive = false;
+                _loginTunnelArmed = false;
                 _loginHoldSeconds = 0f;
                 _presentation.Reset();
             }
+            else if (_loginTunnelArmed)
+            {
+                // Enter-click round (2026-08-17): the pre-reveal armed
+                // window — from the Enter click until the Runtime login
+                // reveal begins (CreatePlayer + first accepted position) and
+                // the activation above claims it. Keeps the tunnel animating
+                // across the server round-trip; disarms if the enter
+                // transaction fell back to character select.
+                TickArmedLoginTunnel(deltaSeconds);
+            }
             return;
         }
 
@@ -1216,6 +1397,42 @@ internal sealed class LocalPlayerTeleportController
         _presentation.TickTunnel(deltaSeconds);
     }
 
+    /// <summary>
+    /// Enter-click round (2026-08-17): the armed pre-reveal pump. The
+    /// sequencer holds in its Tunnel state (worldReady pinned false — no
+    /// reveal exists to be ready), the tunnel scene animates, and the hold
+    /// clock accumulates from the click. Disarms when the Runtime
+    /// character-selection lifecycle regresses out of the enter transaction
+    /// (rejected EnterWorld → AwaitingSelection, or a session teardown →
+    /// Inactive/Connecting): the character-select screen is in front again
+    /// and retail shows no tunnel there.
+    /// </summary>
+    private void TickArmedLoginTunnel(float deltaSeconds)
+    {
+        RuntimeCharacterSelectionLifecycle lifecycle =
+            _loginLifecycle.SelectionLifecycle;
+        if (lifecycle is not (
+            RuntimeCharacterSelectionLifecycle.EnteringWorld
+            or RuntimeCharacterSelectionLifecycle.InWorld))
+        {
+            _loginTunnelArmed = false;
+            _loginHoldSeconds = 0f;
+            _presentation.Reset();
+            Console.WriteLine(
+                $"live: login tunnel disarmed (lifecycle={lifecycle})");
+            return;
+        }
+
+        long generation = _lifetimeGeneration;
+        _loginHoldSeconds += deltaSeconds;
+        var (_, events) = _presentation.Tick(deltaSeconds, worldReady: false);
+        if (_lifetimeGeneration != generation || !_loginTunnelArmed)
+            return;
+        if (!ProcessArmedLoginTunnelEvents(events, generation))
+            return;
+        _presentation.TickTunnel(deltaSeconds);
+    }
+
     /// <summary>
     /// The login pump's currency check — the login mirror of
     /// <see cref="IsCurrentLifetime(long, ushort)"/>: same controller
@@ -1368,6 +1585,7 @@ internal sealed class LocalPlayerTeleportController
         // teleport-scoped reset and clears only with the session.
         _loginRevealGeneration = 0;
         _loginPresentationActive = false;
+        _loginTunnelArmed = false;
         _loginHoldSeconds = 0f;
         if (clearSession)
             _loginPlacementCompleted = false;

src/AcDream.Runtime/Session/LiveSessionHost.cs

@@ -14,7 +14,16 @@ public sealed record LiveSessionSelectionBindings(
     Action<uint> SetChatIdentity,
     Action<uint> MarkPersistent,
     Action<uint> SetVanishProbeIdentity,
-    Action ClearCombat);
+    Action ClearCombat,
+    /// <summary>Enter-click round (2026-08-17): arms the graphical host's
+    /// login-wormhole presentation at the selected-character edge — the one
+    /// host callback every entry route (direct connect, roster Enter,
+    /// enter-after-create) fires immediately BEFORE the EnterWorld wire
+    /// send, so the tunnel covers the whole server round-trip (registered
+    /// user-directed deviation from retail's pre-CreatePlayer black).
+    /// Default no-op preserves headless and existing construction sites.
+    /// </summary>
+    Action? ArmLoginTunnel = null);
 
 public sealed record LiveSessionEnteredWorldBindings(
     Action<string> SetActiveCharacter,
@@ -252,6 +261,9 @@ public sealed class LiveSessionHost
         _selection.MarkPersistent(id);
         _selection.SetVanishProbeIdentity(id);
         _selection.ClearCombat();
+        // Enter-click round (2026-08-17): LAST, after identity wiring — the
+        // armed tunnel's own logging can then already attribute the session.
+        _selection.ArmLoginTunnel?.Invoke();
     }
 
     private void ApplyEnteredWorld(LiveSessionCharacterSelection selection)