feat(streaming): enforce typed completion queues

Replace the flat deferred list, priority scan, unload bypass, and count-only execution cap with exact destination/control/unload/Near/Far FIFOs behind one typed frame meter. Price worker results before adoption, retain exact retry identity, reject stale generations without payload retention, and publish queue pressure through lifecycle diagnostics.

Tests: dotnet build AcDream.slnx -c Release --no-restore; dotnet test AcDream.slnx -c Release --no-restore (8138 passed, 5 skipped)

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

@@ -1004,7 +1004,15 @@ public sealed class LandblockPresentationPipelineTests
             state,
             nearRadius: 0,
             farRadius: 2,
-            removeTerrain: id => calls.Add($"unload:{id:X8}"));
+            removeTerrain: id => calls.Add($"unload:{id:X8}"),
+            workBudgetOptions: new StreamingWorkBudgetOptions(
+                MaxUpdateMilliseconds: 100,
+                MaxCompletionAdmissions: 3,
+                MaxAdoptedCpuBytes: 1_000_000,
+                MaxEntityOperations: 1_000,
+                MaxGpuUploadBytes: 1_000_000,
+                MaxGlRetireOperations: 1_000,
+                DestinationReserveFraction: 0.75f));
         controller.PriorityLandblockId = priorityId;
 
         Assert.Throws<InvalidOperationException>(() => controller.Tick(0x70, 0x70));
@@ -1021,8 +1029,8 @@ public sealed class LandblockPresentationPipelineTests
         Assert.Equal(
             [
                 $"publish:{priorityId:X8}",
-                $"publish:{laterId:X8}",
                 $"unload:{unloadId:X8}",
+                $"publish:{laterId:X8}",
             ],
             calls);
     }