test(streaming): expose world reveal lifecycle

docs/plans/2026-07-20-automated-world-lifecycle-gate.md

@@ -0,0 +1,142 @@
+# Automated world-lifecycle gate
+
+**Status:** In progress (2026-07-20)
+**Owner:** M3 stabilization / R6 rendering-lifecycle rebaseline
+**Depends on:** `WorldRevealReadinessBarrier`, retained-UI automation,
+`FrameProfiler`, connected local ACE
+
+## Outcome
+
+Create a deterministic connected Release gate that catches the structural
+failures which previously required someone to stare at the client for several
+minutes:
+
+- the first login frame cannot expose world geometry before the destination's
+  render meshes, composite textures, and collision data are all ready;
+- every portal/recall lifetime crosses the same readiness edge, materializes
+  once, and returns to the normal viewport once;
+- dungeon entry and exit use the same lifecycle without grey frames,
+  stale-source geometry, or an uncollidable destination;
+- graceful logout followed by a fresh reconnect starts a new reveal lifetime
+  and cannot inherit readiness or resources from the previous process;
+- repeated destinations do not cause cumulative memory, owner-count,
+  allocation, update-time, or GPU-time growth;
+- each stable checkpoint produces machine-readable state plus a screenshot for
+  later human comparison.
+
+This is a correctness and resource-lifetime gate. Screenshots preserve visual
+evidence, but automation does **not** claim retail visual equivalence. Color,
+composition, animation feel, and subtle geometry artifacts remain user gates.
+
+## Canonical runtime contract
+
+`WorldRevealReadinessBarrier` remains the only definition of destination
+readiness. It will expose a structured snapshot rather than forcing telemetry
+to repeat the readiness formula. A snapshot records the destination cell,
+indoor/outdoor classification, required radius, render publication, composite
+texture readiness, collision readiness, an impossible/unhydratable claim, and
+the final `Ready` result.
+
+A focused App-layer `WorldRevealLifecycleTelemetry` owns diagnostic reveal
+generations. It has no GL calls and no knowledge of `GameWindow`. For each
+login or portal generation it records:
+
+1. begin;
+2. destination acquisition;
+3. each distinct readiness transition;
+4. the first frame where the normal world viewport is actually eligible to
+   draw;
+5. completion or cancellation.
+
+Making the normal viewport visible before `Ready` is a hard invariant failure,
+not a warning. A newer generation retires the older one, so stale asynchronous
+completion cannot satisfy the new destination.
+
+`GameWindow` only supplies facts and invokes the controller at existing
+lifecycle seams. It does not gain a new feature body.
+
+## Production automation seam
+
+The retained-UI automation runner gains runtime commands through an injected
+interface:
+
+- `wait world-ready [timeout-ms]` waits on canonical lifecycle state instead
+  of a guessed sleep;
+- `wait materialized <occurrence> [timeout-ms]` waits for the authoritative
+  portal completion count;
+- `checkpoint <name>` emits one JSON record containing reveal state,
+  landblock/entity/animation and resource-owner counts, managed memory, and
+  the latest frame-profiler summary;
+- `screenshot <name> [timeout-ms]` queues a default-framebuffer capture after
+  the complete world and retained UI have drawn, then waits for the render
+  thread to finish the PNG;
+- existing `input` commands perform deterministic turns and movement through
+  `InputDispatcher`.
+
+All state mutation and GL readback stay on the update/render thread. The
+external gate only launches the process, observes files/logs and OS process
+metrics, and requests normal `WM_CLOSE` shutdown.
+
+## Connected route
+
+The gate runs two capped/uncapped-aware sessions against local ACE:
+
+1. fresh login → wait for canonical readiness → checkpoint + screenshot;
+2. outdoor dense scene → turn → stable checkpoint + screenshot;
+3. world-edge scene → turn → stable checkpoint;
+4. known dungeon destination → checkpoint + screenshot → local movement;
+5. return outdoors → checkpoint + screenshot;
+6. revisit the first dense scene → stable resource comparison;
+7. graceful close;
+8. reconnect the same account → repeat the fresh-login readiness and
+   screenshot gate → graceful close.
+
+The existing seven-destination R6 soak remains the longer performance route.
+The lifecycle gate is shorter and more diagnostic; it composes with that soak
+rather than replacing it.
+
+## Hard failures
+
+- world viewport observed before the active reveal snapshot is ready;
+- destination never reaches readiness or materialization within the bounded
+  connected test timeout;
+- missing or duplicate reveal/materialization/completion edges;
+- missing checkpoint JSON or screenshot, zero-sized/corrupt screenshot;
+- absent required destination landblock/EnvCell/collision readiness;
+- retained per-owner resources after delete/session teardown in deterministic
+  tests;
+- same-location resource counts or memory/per-frame allocation grow beyond the
+  route's documented relative tolerance;
+- unhandled exception, access violation, OOM, GL/device loss, disconnect,
+  unexpected WeenieError, nonzero exit, or failure of graceful shutdown.
+
+Absolute FPS is recorded, never compared across local and RDP sessions. The
+gate compares like-for-like samples within one process and reports CPU and GPU
+frame time separately.
+
+## Implementation sequence
+
+1. Add a structured readiness snapshot and exhaustive barrier tests.
+2. Add lifecycle telemetry as a pure App owner with stale-generation,
+   cancellation, duplicate, and early-visible tests.
+3. Add the automation runtime interface, deterministic waits, checkpoints, and
+   screenshot request/completion protocol.
+4. Add the render-thread screenshot owner and structured resource snapshots.
+5. Wire the owners at login, F751 portal start, TAS placement/completion, world
+   draw eligibility, and session teardown.
+6. Add the connected route and PowerShell report/gate orchestration.
+7. Run capped and uncapped Release gates, fix root causes, and retain artifacts.
+8. Extract the now-protected streaming/portal/reveal frame orchestration from
+   `GameWindow` without changing the accepted lifecycle trace.
+9. Run focused tests, full Release build/test, connected gates, graceful-close
+   verification, and documentation reconciliation.
+
+## Completion evidence
+
+- focused App tests for every lifecycle invariant;
+- full Release solution build and test suite;
+- two-process connected lifecycle report with screenshots and JSONL timeline;
+- accepted capped and uncapped same-session metrics;
+- `GameWindow` extraction retains the exact accepted lifecycle trace;
+- roadmap, issues, architecture, divergence register, memory, `AGENTS.md`, and
+  `CLAUDE.md` agree on the resulting ownership and remaining visual gates.

src/AcDream.App/Rendering/GameWindow.cs

@@ -148,6 +148,8 @@ public sealed class GameWindow : IDisposable
     private AcDream.App.Rendering.EquippedChildRenderController? _equippedChildRenderer;
     private AcDream.App.Streaming.StreamingController? _streamingController;
     private AcDream.App.Streaming.WorldRevealReadinessBarrier? _worldRevealReadiness;
+    private readonly AcDream.App.Streaming.WorldRevealLifecycleTelemetry _worldRevealTelemetry =
+        new(message => Console.WriteLine(message));
     private int _streamingRadius = 2;  // default 5×5 (kept for debug overlay getStreamingRadius callback)
     private int _nearRadius = 4;       // Phase A.5 T16: two-tier near ring (default 4 → 9×9)
     private int _farRadius  = 12;      // Phase A.5 T16: two-tier far ring  (default 12 → 25×25)
@@ -3615,6 +3617,7 @@ public sealed class GameWindow : IDisposable
         // login must not inherit the dispatcher's default/previous composite
         // readiness and expose a terrain-only or partially uploaded world.
         _worldRevealReadiness?.Begin();
+        _worldRevealTelemetry.Begin(AcDream.App.Streaming.WorldRevealKind.Login);
 
         // Streaming is normally gated until this point, so the next loaded-
         // landblock callback will materialize deferred records. Also cover an
@@ -7538,6 +7541,7 @@ public sealed class GameWindow : IDisposable
         _teleportHoldSeconds = 0f;
         _teleportForced = false;
         _worldRevealReadiness?.Begin();
+        _worldRevealTelemetry.Begin(AcDream.App.Streaming.WorldRevealKind.Portal);
         if (_streamingController is not null)
         {
             _streamingController.PriorityLandblockId =
@@ -7561,7 +7565,10 @@ public sealed class GameWindow : IDisposable
     private void ResetTeleportTransitState(bool clearSession = false)
     {
         if (clearSession)
+        {
             _teleportTransit.ClearSession();
+            _worldRevealTelemetry.Cancel();
+        }
         else
             _teleportTransit.EndActive();
         _pendingTeleportPos = default;
@@ -7608,12 +7615,20 @@ public sealed class GameWindow : IDisposable
     /// loudly rather than holding forever.
     /// </summary>
     private bool TeleportWorldReady(uint destCell)
-        => _worldRevealReadiness?.IsReady(destCell) == true;
+        => EvaluateWorldRevealReadiness(destCell).IsReady;
 
     private bool LoginWorldReady()
     {
         return TryGetLoginWorldCell(out uint cell)
-            && _worldRevealReadiness?.IsReady(cell) == true;
+            && EvaluateWorldRevealReadiness(cell).IsReady;
+    }
+
+    private AcDream.App.Streaming.WorldRevealReadinessSnapshot EvaluateWorldRevealReadiness(
+        uint destinationCell)
+    {
+        var snapshot = _worldRevealReadiness?.Evaluate(destinationCell) ?? default;
+        _worldRevealTelemetry.ObserveReadiness(snapshot);
+        return snapshot;
     }
 
     private bool TryGetLoginWorldCell(out uint cell)
@@ -9742,6 +9757,7 @@ public sealed class GameWindow : IDisposable
                 {
                     case AcDream.Core.World.TeleportAnimEvent.Place:
                         PlaceTeleportArrival(_pendingTeleportPos, _pendingTeleportCell, _teleportForced);
+                        _worldRevealTelemetry.ObserveMaterialized();
                         if (_streamingController is not null)
                         {
                             _streamingController.PriorityLandblockId = 0u;
@@ -9761,6 +9777,7 @@ public sealed class GameWindow : IDisposable
                         // each portal transition.
                         _liveSession?.SendGameAction(
                             AcDream.Core.Net.Messages.GameActionLoginComplete.Build());
+                        _worldRevealTelemetry.Complete();
                         ResetTeleportTransitState();
                         break;
                     default:
@@ -10118,7 +10135,10 @@ public sealed class GameWindow : IDisposable
                     ? loginCell
                     : 0u;
             if (revealCell != 0)
+            {
                 _worldRevealReadiness?.Prepare(revealCell);
+                EvaluateWorldRevealReadiness(revealCell);
+            }
             _particleRenderer?.BeginFrame(_gpuFrameFlights.CurrentSlot);
         }
         if (_frameDiag)
@@ -10176,7 +10196,11 @@ public sealed class GameWindow : IDisposable
             _particleVisibility.BeginFrame(camPos);
             _terrain?.BeginVisibilityFrame();
             if (!IsLiveModeWaitingForLogin)
+            {
                 _particleVisibility.UseWorldView();
+                _worldRevealTelemetry.ObserveWorldViewportVisible();
+                _worldRevealTelemetry.Complete();
+            }
 
             // L.0 Audio tab: push the SettingsVM's live AudioDraft into the
             // engine each frame, so volume sliders preview audibly while

src/AcDream.App/Streaming/WorldRevealLifecycleTelemetry.cs

@@ -0,0 +1,158 @@
+using System.Globalization;
+
+namespace AcDream.App.Streaming;
+
+internal enum WorldRevealKind
+{
+    Login,
+    Portal,
+}
+
+internal readonly record struct WorldRevealLifecycleSnapshot(
+    long Generation,
+    WorldRevealKind Kind,
+    WorldRevealReadinessSnapshot Readiness,
+    bool Materialized,
+    bool Completed,
+    bool Cancelled,
+    bool WorldViewportObserved,
+    int InvariantFailureCount)
+{
+    public bool IsActive => Generation != 0 && !Cancelled;
+    public bool IsReady => Readiness.IsReady;
+}
+
+/// <summary>
+/// Observes logical login/portal reveal generations without owning rendering or
+/// changing gameplay state. The owner turns the canonical readiness decision
+/// into deterministic lifecycle markers for connected automation and records a
+/// hard diagnostic failure if normal world geometry becomes visible early.
+/// </summary>
+internal sealed class WorldRevealLifecycleTelemetry
+{
+    private readonly Action<string> _log;
+    private WorldRevealLifecycleSnapshot _snapshot;
+    private long _nextGeneration;
+    private int _portalMaterializationCount;
+
+    public WorldRevealLifecycleTelemetry(Action<string>? log = null)
+    {
+        _log = log ?? (_ => { });
+    }
+
+    public WorldRevealLifecycleSnapshot Snapshot => _snapshot;
+    public int PortalMaterializationCount => _portalMaterializationCount;
+
+    public long Begin(WorldRevealKind kind)
+    {
+        if (_snapshot.Generation != 0
+            && !_snapshot.Cancelled
+            && !_snapshot.WorldViewportObserved)
+        {
+            Log("superseded", _snapshot);
+        }
+
+        long generation = checked(++_nextGeneration);
+        _snapshot = new WorldRevealLifecycleSnapshot(
+            generation,
+            kind,
+            default,
+            Materialized: false,
+            Completed: false,
+            Cancelled: false,
+            WorldViewportObserved: false,
+            InvariantFailureCount: _snapshot.InvariantFailureCount);
+        Log("begin", _snapshot);
+        return generation;
+    }
+
+    public void ObserveReadiness(WorldRevealReadinessSnapshot readiness)
+    {
+        if (_snapshot.Generation == 0 || _snapshot.Cancelled)
+            return;
+
+        if (_snapshot.Readiness == readiness)
+            return;
+
+        if (_snapshot.Readiness.DestinationCell != 0u
+            && readiness.DestinationCell != 0u
+            && _snapshot.Readiness.DestinationCell != readiness.DestinationCell)
+        {
+            FailInvariant(
+                "destination-changed",
+                $"from=0x{_snapshot.Readiness.DestinationCell:X8} to=0x{readiness.DestinationCell:X8}");
+        }
+
+        _snapshot = _snapshot with { Readiness = readiness };
+        Log("readiness", _snapshot);
+    }
+
+    public void ObserveMaterialized()
+    {
+        if (_snapshot.Generation == 0 || _snapshot.Cancelled || _snapshot.Materialized)
+            return;
+
+        _snapshot = _snapshot with { Materialized = true };
+        if (_snapshot.Kind == WorldRevealKind.Portal)
+            _portalMaterializationCount++;
+        Log("materialized", _snapshot);
+    }
+
+    public void ObserveWorldViewportVisible()
+    {
+        if (_snapshot.Generation == 0 || _snapshot.Cancelled || _snapshot.WorldViewportObserved)
+            return;
+
+        if (!_snapshot.Readiness.IsReady)
+            FailInvariant("viewport-before-ready", null);
+
+        _snapshot = _snapshot with { WorldViewportObserved = true };
+        Log("world-visible", _snapshot);
+    }
+
+    public void Complete()
+    {
+        if (_snapshot.Generation == 0 || _snapshot.Cancelled || _snapshot.Completed)
+            return;
+
+        _snapshot = _snapshot with { Completed = true };
+        Log("complete", _snapshot);
+    }
+
+    public void Cancel()
+    {
+        if (_snapshot.Generation == 0 || _snapshot.Cancelled)
+            return;
+
+        _snapshot = _snapshot with { Cancelled = true };
+        Log("cancel", _snapshot);
+    }
+
+    private void FailInvariant(string reason, string? detail)
+    {
+        _snapshot = _snapshot with
+        {
+            InvariantFailureCount = checked(_snapshot.InvariantFailureCount + 1),
+        };
+        string suffix = string.IsNullOrWhiteSpace(detail) ? string.Empty : $" {detail}";
+        _log($"[world-reveal] event=invariant-failure reason={reason}{suffix} {Describe(_snapshot)}");
+    }
+
+    private void Log(string eventName, WorldRevealLifecycleSnapshot snapshot) =>
+        _log($"[world-reveal] event={eventName} {Describe(snapshot)}");
+
+    private static string Describe(WorldRevealLifecycleSnapshot snapshot)
+    {
+        WorldRevealReadinessSnapshot ready = snapshot.Readiness;
+        return string.Create(
+            CultureInfo.InvariantCulture,
+            $"generation={snapshot.Generation} kind={snapshot.Kind} " +
+            $"cell=0x{ready.DestinationCell:X8} indoor={ready.IsIndoor} " +
+            $"radius={ready.RequiredRenderRadius} unhydratable={ready.IsUnhydratable} " +
+            $"render={ready.IsRenderNeighborhoodReady} composites={ready.AreCompositeTexturesReady} " +
+            $"collision={ready.IsCollisionReady} ready={ready.IsReady} " +
+            $"materialized={snapshot.Materialized} completed={snapshot.Completed} " +
+            $"cancelled={snapshot.Cancelled} visible={snapshot.WorldViewportObserved} " +
+            $"failures={snapshot.InvariantFailureCount}");
+    }
+}

src/AcDream.App/Streaming/WorldRevealReadinessBarrier.cs

@@ -1,5 +1,29 @@
 namespace AcDream.App.Streaming;
 
+/// <summary>
+/// One evaluation of the destination domains guarded by
+/// <see cref="WorldRevealReadinessBarrier"/>. Keeping the individual facts in
+/// the canonical owner lets diagnostics and automation observe readiness
+/// without duplicating (and eventually drifting from) the reveal predicate.
+/// </summary>
+internal readonly record struct WorldRevealReadinessSnapshot(
+    uint DestinationCell,
+    bool IsIndoor,
+    bool IsUnhydratable,
+    int RequiredRenderRadius,
+    bool IsRenderNeighborhoodReady,
+    bool AreCompositeTexturesReady,
+    bool IsCollisionReady)
+{
+    public bool HasDestination => DestinationCell != 0u;
+
+    public bool IsReady => HasDestination
+        && (IsUnhydratable
+            || (IsRenderNeighborhoodReady
+                && AreCompositeTexturesReady
+                && IsCollisionReady));
+}
+
 /// <summary>
 /// Joins the render-publication, texture, and collision domains that must be
 /// complete before the normal world viewport is revealed. Retail keeps
@@ -73,20 +97,46 @@ internal sealed class WorldRevealReadinessBarrier
     /// existing loud forced-placement path can expose the invalid server data.
     /// </summary>
     public bool IsReady(uint destinationCell)
+        => Evaluate(destinationCell).IsReady;
+
+    /// <summary>
+    /// Evaluates each readiness domain once and returns the complete decision.
+    /// Consumers must use this snapshot rather than reimplementing the join.
+    /// </summary>
+    public WorldRevealReadinessSnapshot Evaluate(uint destinationCell)
     {
         if (destinationCell == 0)
-            return false;
-        if (_isSpawnClaimUnhydratable(destinationCell))
-            return true;
+            return default;
 
+        bool isIndoor = IsIndoor(destinationCell);
         int radius = RequiredRenderRadius(destinationCell);
-        if (!_isRenderNeighborhoodReady(destinationCell, radius)
-            || !_areCompositeTexturesReady())
-            return false;
+        if (_isSpawnClaimUnhydratable(destinationCell))
+        {
+            return new WorldRevealReadinessSnapshot(
+                destinationCell,
+                isIndoor,
+                IsUnhydratable: true,
+                radius,
+                IsRenderNeighborhoodReady: false,
+                AreCompositeTexturesReady: false,
+                IsCollisionReady: false);
+        }
 
-        return IsIndoor(destinationCell)
-            ? _isSpawnCellReady(destinationCell)
-            : _isTerrainNeighborhoodReady(destinationCell, radius);
+        bool renderReady = _isRenderNeighborhoodReady(destinationCell, radius);
+        bool compositesReady = renderReady && _areCompositeTexturesReady();
+        bool collisionReady = renderReady && compositesReady
+            && (isIndoor
+                ? _isSpawnCellReady(destinationCell)
+                : _isTerrainNeighborhoodReady(destinationCell, radius));
+
+        return new WorldRevealReadinessSnapshot(
+            destinationCell,
+            isIndoor,
+            IsUnhydratable: false,
+            radius,
+            renderReady,
+            compositesReady,
+            collisionReady);
     }
 
     private static int RequiredRenderRadius(uint destinationCell) =>

tests/AcDream.App.Tests/Streaming/WorldRevealLifecycleTelemetryTests.cs

@@ -0,0 +1,105 @@
+using AcDream.App.Streaming;
+
+namespace AcDream.App.Tests.Streaming;
+
+public sealed class WorldRevealLifecycleTelemetryTests
+{
+    private static WorldRevealReadinessSnapshot Ready(uint cell = 0x11340021u) => new(
+        cell,
+        IsIndoor: false,
+        IsUnhydratable: false,
+        RequiredRenderRadius: 1,
+        IsRenderNeighborhoodReady: true,
+        AreCompositeTexturesReady: true,
+        IsCollisionReady: true);
+
+    [Fact]
+    public void Login_RecordsReadyThenFirstVisibleFrameExactlyOnce()
+    {
+        var logs = new List<string>();
+        var telemetry = new WorldRevealLifecycleTelemetry(logs.Add);
+
+        long generation = telemetry.Begin(WorldRevealKind.Login);
+        telemetry.ObserveReadiness(Ready());
+        telemetry.ObserveWorldViewportVisible();
+        telemetry.ObserveWorldViewportVisible();
+        telemetry.Complete();
+
+        Assert.Equal(generation, telemetry.Snapshot.Generation);
+        Assert.True(telemetry.Snapshot.IsReady);
+        Assert.True(telemetry.Snapshot.WorldViewportObserved);
+        Assert.True(telemetry.Snapshot.Completed);
+        Assert.Equal(0, telemetry.Snapshot.InvariantFailureCount);
+        Assert.Single(logs, line => line.Contains("event=world-visible", StringComparison.Ordinal));
+    }
+
+    [Fact]
+    public void EarlyWorldViewport_IsARecordedHardInvariantFailure()
+    {
+        var logs = new List<string>();
+        var telemetry = new WorldRevealLifecycleTelemetry(logs.Add);
+
+        telemetry.Begin(WorldRevealKind.Login);
+        telemetry.ObserveReadiness(Ready() with { AreCompositeTexturesReady = false });
+        telemetry.ObserveWorldViewportVisible();
+
+        Assert.Equal(1, telemetry.Snapshot.InvariantFailureCount);
+        Assert.Contains(logs, line => line.Contains("reason=viewport-before-ready", StringComparison.Ordinal));
+    }
+
+    [Fact]
+    public void NewGeneration_SupersedesOldStateAndRejectsDestinationMutation()
+    {
+        var logs = new List<string>();
+        var telemetry = new WorldRevealLifecycleTelemetry(logs.Add);
+
+        long first = telemetry.Begin(WorldRevealKind.Login);
+        telemetry.ObserveReadiness(Ready(0x11340021u));
+        long second = telemetry.Begin(WorldRevealKind.Portal);
+        telemetry.ObserveReadiness(Ready(0x3032001Cu));
+        telemetry.ObserveReadiness(Ready(0xC95B0001u));
+
+        Assert.True(second > first);
+        Assert.Equal(WorldRevealKind.Portal, telemetry.Snapshot.Kind);
+        Assert.Equal(0xC95B0001u, telemetry.Snapshot.Readiness.DestinationCell);
+        Assert.Equal(1, telemetry.Snapshot.InvariantFailureCount);
+        Assert.Contains(logs, line => line.Contains("event=superseded", StringComparison.Ordinal));
+        Assert.Contains(logs, line => line.Contains("reason=destination-changed", StringComparison.Ordinal));
+    }
+
+    [Fact]
+    public void PortalMaterialization_IsCountedOncePerGeneration()
+    {
+        var telemetry = new WorldRevealLifecycleTelemetry();
+
+        telemetry.Begin(WorldRevealKind.Portal);
+        telemetry.ObserveReadiness(Ready());
+        telemetry.ObserveMaterialized();
+        telemetry.ObserveMaterialized();
+        telemetry.Begin(WorldRevealKind.Portal);
+        telemetry.ObserveReadiness(Ready(0x3032001Cu));
+        telemetry.ObserveMaterialized();
+
+        Assert.Equal(2, telemetry.PortalMaterializationCount);
+    }
+
+    [Fact]
+    public void CancelledGeneration_IgnoresLateAsyncObservations()
+    {
+        var telemetry = new WorldRevealLifecycleTelemetry();
+
+        telemetry.Begin(WorldRevealKind.Portal);
+        telemetry.Cancel();
+        telemetry.ObserveReadiness(Ready());
+        telemetry.ObserveMaterialized();
+        telemetry.ObserveWorldViewportVisible();
+        telemetry.Complete();
+
+        Assert.True(telemetry.Snapshot.Cancelled);
+        Assert.False(telemetry.Snapshot.IsReady);
+        Assert.False(telemetry.Snapshot.Materialized);
+        Assert.False(telemetry.Snapshot.WorldViewportObserved);
+        Assert.False(telemetry.Snapshot.Completed);
+        Assert.Equal(0, telemetry.PortalMaterializationCount);
+    }
+}

tests/AcDream.App.Tests/Streaming/WorldRevealReadinessBarrierTests.cs

@@ -121,4 +121,46 @@ public sealed class WorldRevealReadinessBarrierTests
         Assert.Equal(0, state.Preparations);
         Assert.Equal(-1, state.RenderRadius);
     }
+
+    [Fact]
+    public void Evaluate_ExposesTheCanonicalOutdoorDecisionWithoutRepeatingDomains()
+    {
+        const uint outdoorCell = 0x11340021u;
+        var state = new State
+        {
+            RenderReady = true,
+            CompositeReady = true,
+            TerrainReady = true,
+        };
+
+        WorldRevealReadinessSnapshot snapshot = state.Build().Evaluate(outdoorCell);
+
+        Assert.Equal(outdoorCell, snapshot.DestinationCell);
+        Assert.False(snapshot.IsIndoor);
+        Assert.Equal(WorldRevealReadinessBarrier.OutdoorNeighborhoodRadius, snapshot.RequiredRenderRadius);
+        Assert.True(snapshot.IsRenderNeighborhoodReady);
+        Assert.True(snapshot.AreCompositeTexturesReady);
+        Assert.True(snapshot.IsCollisionReady);
+        Assert.True(snapshot.IsReady);
+        Assert.Equal(-1, state.PreparedRadius);
+    }
+
+    [Fact]
+    public void Evaluate_ShortCircuitsDownstreamDomainsUntilRenderPublication()
+    {
+        var state = new State
+        {
+            CompositeReady = true,
+            TerrainReady = true,
+            SpawnCellReady = true,
+        };
+
+        WorldRevealReadinessSnapshot snapshot = state.Build().Evaluate(0x11340100u);
+
+        Assert.False(snapshot.IsRenderNeighborhoodReady);
+        Assert.False(snapshot.AreCompositeTexturesReady);
+        Assert.False(snapshot.IsCollisionReady);
+        Assert.False(snapshot.IsReady);
+        Assert.Equal(-1, state.TerrainRadius);
+    }
 }