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/World/LiveEntityTeardownPlanTests.cs

@@ -0,0 +1,57 @@
+using AcDream.App.World;
+
+namespace AcDream.App.Tests.World;
+
+public sealed class LiveEntityTeardownPlanTests
+{
+    [Fact]
+    public void AdvanceRetriesOnlyFailedSteps()
+    {
+        int first = 0;
+        int middle = 0;
+        int last = 0;
+        var plan = new LiveEntityTeardownPlan(
+        [
+            () => first++,
+            () =>
+            {
+                middle++;
+                if (middle == 1)
+                    throw new InvalidOperationException("middle failed");
+            },
+            () => last++,
+        ]);
+
+        Assert.Throws<AggregateException>(() => plan.Advance());
+        Assert.Equal(2, plan.CompletedCount);
+
+        plan.Advance();
+
+        Assert.True(plan.IsComplete);
+        Assert.Equal(1, first);
+        Assert.Equal(2, middle);
+        Assert.Equal(1, last);
+    }
+
+    [Fact]
+    public void AdvanceAttemptsEveryIndependentFailureInOnePass()
+    {
+        int first = 0;
+        int last = 0;
+        var plan = new LiveEntityTeardownPlan(
+        [
+            () =>
+            {
+                first++;
+                throw new InvalidOperationException("first");
+            },
+            () => last++,
+        ]);
+
+        Assert.Throws<AggregateException>(() => plan.Advance());
+
+        Assert.Equal(1, first);
+        Assert.Equal(1, last);
+        Assert.Equal(1, plan.CompletedCount);
+    }
+}