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.Core.Tests/World/LandblockStaticEntityIdAllocatorTests.cs

@@ -0,0 +1,46 @@
+using AcDream.Core.World;
+
+namespace AcDream.Core.Tests.World;
+
+public sealed class LandblockStaticEntityIdAllocatorTests
+{
+    [Fact]
+    public void Base_PreservesFullCoordinatesAndStabNamespace()
+    {
+        var bases = new HashSet<uint>();
+        for (uint y = 0; y <= 255; y++)
+        for (uint x = 0; x <= 255; x++)
+        {
+            uint value = LandblockStaticEntityIdAllocator.Base(x, y);
+            Assert.True(LandblockStaticEntityIdAllocator.IsInNamespace(value));
+            Assert.True(bases.Add(value), $"duplicate base for ({x},{y})");
+        }
+    }
+
+    [Fact]
+    public void MaximumCounterDoesNotAliasAdjacentLandblock()
+    {
+        for (uint y = 0; y < 255; y++)
+        {
+            uint current = LandblockStaticEntityIdAllocator.Base(0, y);
+            uint next = LandblockStaticEntityIdAllocator.Base(0, y + 1);
+            Assert.True(current + LandblockStaticEntityIdAllocator.MaxCounter < next);
+        }
+    }
+
+    [Fact]
+    public void Allocate_AcceptsLastCounterThenFailsBeforeNamespaceWrap()
+    {
+        uint counter = LandblockStaticEntityIdAllocator.MaxCounter;
+
+        uint last = LandblockStaticEntityIdAllocator.Allocate(0xA9u, 0xB4u, ref counter);
+
+        Assert.Equal(
+            LandblockStaticEntityIdAllocator.Base(0xA9u, 0xB4u)
+                + LandblockStaticEntityIdAllocator.MaxCounter,
+            last);
+        InvalidDataException error = Assert.Throws<InvalidDataException>(
+            () => LandblockStaticEntityIdAllocator.Allocate(0xA9u, 0xB4u, ref counter));
+        Assert.Contains("4096-entry", error.Message, StringComparison.Ordinal);
+    }
+}