fix(rendering): bound portal resource lifetime

Separate logical ownership, render publication, and GPU retirement across live entities, landblocks, particles, textures, mesh arenas, portal/UI teardown, and per-frame scratch storage. Add bounded DAT/texture caches, upload budgets, three-frame fence retirement, exact-incarnation appearance reconciliation, frame pacing, and extensive lifetime conformance coverage.\n\nThe seven-destination connected route now cuts peak working/private memory roughly in half, returns Caul to 125-153 FPS locally, and produces no WER or AMD reset.\n\nCo-authored-by: OpenAI Codex <codex@openai.com>

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

@@ -179,6 +179,36 @@ public class ChatWindowControllerTests
         Assert.Contains(ctrl!.Input, bar!.Children);
     }
 
+    [Fact]
+    public void TranscriptLayout_IsReusedUntilContentOrWidthChanges()
+    {
+        var (rootInfo, layout, vm) = BuildTestTree();
+        var bus = new CaptureBus();
+        var ctrl = ChatWindowController.Bind(
+            rootInfo, layout, vm, () => bus, null, null, NoTex)!;
+
+        vm.ShowSystemMessage("one wrapped transcript line");
+        IReadOnlyList<UiText.Line> first = ctrl.Transcript.LinesProvider();
+        IReadOnlyList<UiText.Line> unchanged = ctrl.Transcript.LinesProvider();
+
+        Assert.Same(first, unchanged);
+        Assert.Equal(1, ctrl.TranscriptLayoutBuildCount);
+
+        vm.ShowSystemMessage("second line");
+        IReadOnlyList<UiText.Line> appended = ctrl.Transcript.LinesProvider();
+        Assert.NotSame(first, appended);
+        Assert.Equal(2, ctrl.TranscriptLayoutBuildCount);
+
+        ctrl.Transcript.Width -= 40f;
+        IReadOnlyList<UiText.Line> resized = ctrl.Transcript.LinesProvider();
+        Assert.NotSame(appended, resized);
+        Assert.Equal(3, ctrl.TranscriptLayoutBuildCount);
+
+        vm.Clear();
+        Assert.Empty(ctrl.Transcript.LinesProvider());
+        Assert.Equal(4, ctrl.TranscriptLayoutBuildCount);
+    }
+
     // ── Test 4: Input.OnSubmit publishes SendChatCmd via the capture bus ─────
 
     [Fact]

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

@@ -187,6 +187,55 @@ public sealed class RadarSnapshotProviderTests
         Assert.Equal(monster, Assert.Single(snapshot.Blips).ObjectId);
     }
 
+    [Fact]
+    public void BuildSnapshot_UsesBoundedSpatialCandidatesBeforeRetailProjection()
+    {
+        const uint player = 40u;
+        const uint nearby = 41u;
+        const uint unrelated = 42u;
+        var objects = new ClientObjectTable();
+        objects.Ingest(Weenie(player, "Player", ItemType.Creature));
+        objects.Ingest(Weenie(nearby, "Nearby", ItemType.Creature) with
+        {
+            RadarBehavior = (byte)RadarBehavior.ShowAlways,
+        });
+        objects.Ingest(Weenie(unrelated, "Unrelated", ItemType.Creature) with
+        {
+            RadarBehavior = (byte)RadarBehavior.ShowAlways,
+        });
+        var entities = new Dictionary<uint, WorldEntity>
+        {
+            [player] = Entity(player, Vector3.Zero, Quaternion.Identity),
+            [nearby] = Entity(nearby, new Vector3(5f, 0f, 0f), Quaternion.Identity),
+            [unrelated] = Entity(unrelated, new Vector3(6f, 0f, 0f), Quaternion.Identity),
+        };
+        var spawns = entities.Keys.ToDictionary(guid => guid, Spawn);
+        uint copiedCell = 0;
+        int copiedRadius = -1;
+        var provider = new RadarSnapshotProvider(
+            objects,
+            () => entities,
+            () => spawns,
+            playerGuid: () => player,
+            playerYawRadians: () => 0f,
+            playerCellId: () => 0xA9B40001u,
+            selectedGuid: () => null,
+            coordinatesOnRadar: () => true,
+            uiLocked: () => false,
+            copySpatialCandidates: (cell, radius, destination) =>
+            {
+                copiedCell = cell;
+                copiedRadius = radius;
+                destination.Add(new KeyValuePair<uint, WorldEntity>(nearby, entities[nearby]));
+            });
+
+        UiRadarSnapshot snapshot = provider.BuildSnapshot();
+
+        Assert.Equal(0xA9B40001u, copiedCell);
+        Assert.Equal(1, copiedRadius);
+        Assert.Equal(nearby, Assert.Single(snapshot.Blips).ObjectId);
+    }
+
     private static WorldEntity Entity(uint guid, Vector3 position, Quaternion rotation) => new()
     {
         Id = guid,