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/RuntimeDatCollectionFactoryTests.cs

@@ -0,0 +1,40 @@
+using DatReaderWriter.Options;
+
+namespace AcDream.App.Tests;
+
+public sealed class RuntimeDatCollectionFactoryTests
+{
+    [Fact]
+    public void CreateReadOnlyOptions_BoundsFilePayloadResidencyAndRetainsIndexLookupCache()
+    {
+        const string datDirectory = @"C:\RetailDats";
+
+        DatCollectionOptions options =
+            RuntimeDatCollectionFactory.CreateReadOnlyOptions(datDirectory);
+
+        Assert.Equal(datDirectory, options.DatDirectory);
+        Assert.Equal(DatAccessType.Read, options.AccessType);
+        Assert.Equal(IndexCachingStrategy.OnDemand, options.IndexCachingStrategy);
+        Assert.Equal(FileCachingStrategy.Never, options.FileCachingStrategy);
+
+        Assert.Equal(IndexCachingStrategy.OnDemand, options.PortalIndexCachingStrategy);
+        Assert.Equal(IndexCachingStrategy.OnDemand, options.CellIndexCachingStrategy);
+        Assert.Equal(IndexCachingStrategy.OnDemand, options.LocalIndexCachingStrategy);
+        Assert.Equal(IndexCachingStrategy.OnDemand, options.HighResIndexCachingStrategy);
+
+        Assert.Equal(FileCachingStrategy.Never, options.PortalFileCachingStrategy);
+        Assert.Equal(FileCachingStrategy.Never, options.CellFileCachingStrategy);
+        Assert.Equal(FileCachingStrategy.Never, options.LocalFileCachingStrategy);
+        Assert.Equal(FileCachingStrategy.Never, options.HighResFileCachingStrategy);
+    }
+
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    [InlineData("   ")]
+    public void CreateReadOnlyOptions_RejectsMissingDatDirectory(string? datDirectory)
+    {
+        Assert.ThrowsAny<ArgumentException>(() =>
+            RuntimeDatCollectionFactory.CreateReadOnlyOptions(datDirectory!));
+    }
+}