perf(diagnostics): expose prepared asset source counters

docs/plans/2026-07-24-modern-runtime-slice-c-prepared-assets.md

@@ -8,7 +8,7 @@
 
 - C1 typed prepared-source boundary — `c42f93b3`
 - C2 production renderer injection — `f05afc07`
-- C3 activation probes and lookup precedence — implemented; automated gate
+- C3 activation probes and lookup precedence — `230a7df4`; automated gate
   green, connected exception-count gate remains in C4
 - C4 connected equivalence and performance closeout — pending
 
@@ -278,7 +278,8 @@ Commit as one semantic-cleanup unit.
    Arwic with the same reference configuration.
 5. Compare fixed-camera screenshots under the committed tolerance/mask rule.
 6. Compare per-portal p99/allocation, process allocation/GC, exception count,
-   cache counters, and repeated-Caul ownership/memory to Slice A.
+   cache counters, prepared-source probes/reads/loaded/missing/corrupt totals,
+   and repeated-Caul ownership/memory to Slice A.
 7. Run Release build and the complete Release suite.
 8. Update the parent plan, roadmap, WorldBuilder inventory, divergence
    register if and only if a real deviation changed, and durable memory.

src/AcDream.App/Composition/LivePresentationComposition.cs

@@ -901,7 +901,8 @@ internal sealed class LivePresentationCompositionPhase
                     foundation.Terrain,
                     foundation.SceneLighting,
                     foundation.MeshAdapter,
-                    foundation.TextureCache)
+                    foundation.TextureCache,
+                    content.PreparedAssets)
                 : null;
         var frameDiagnostics = new RenderFrameDiagnosticsController(
             new RuntimeRenderFrameTitleFactsSource(

src/AcDream.App/Rendering/RenderFrameDiagnosticSources.cs

@@ -2,6 +2,7 @@ using AcDream.App.Rendering.Vfx;
 using AcDream.App.Rendering.Wb;
 using AcDream.App.Streaming;
 using AcDream.App.World;
+using AcDream.Content;
 using AcDream.Core.Physics;
 using AcDream.Core.Vfx;
 using AcDream.Core.World;
@@ -61,6 +62,7 @@ internal sealed class RuntimeRenderFrameResourceDiagnosticsSource :
     private readonly SceneLightingUboBinding? _lighting;
     private readonly WbMeshAdapter? _meshes;
     private readonly TextureCache? _textures;
+    private readonly IPreparedAssetSource? _preparedAssets;
 
     public RuntimeRenderFrameResourceDiagnosticsSource(
         ParticleSystem? particles,
@@ -74,7 +76,8 @@ internal sealed class RuntimeRenderFrameResourceDiagnosticsSource :
         TerrainModernRenderer? terrain,
         SceneLightingUboBinding? lighting,
         WbMeshAdapter? meshes,
-        TextureCache? textures)
+        TextureCache? textures,
+        IPreparedAssetSource? preparedAssets)
     {
         _particles = particles;
         _particleBindings = particleBindings;
@@ -88,6 +91,7 @@ internal sealed class RuntimeRenderFrameResourceDiagnosticsSource :
         _lighting = lighting;
         _meshes = meshes;
         _textures = textures;
+        _preparedAssets = preparedAssets;
     }
 
     public RenderFrameResourceDiagnosticsSnapshot Capture()
@@ -98,6 +102,8 @@ internal sealed class RuntimeRenderFrameResourceDiagnosticsSource :
         var mesh = meshManager?.Diagnostics ?? default;
         var globalMesh = meshManager?.GlobalBuffer;
         var cpuMesh = _meshes?.CpuMeshCacheDiagnostics ?? default;
+        PreparedAssetSourceStats prepared =
+            _preparedAssets?.Stats ?? default;
         GCMemoryInfo gc = GC.GetGCMemoryInfo();
 
         return new RenderFrameResourceDiagnosticsSnapshot(
@@ -141,7 +147,12 @@ internal sealed class RuntimeRenderFrameResourceDiagnosticsSource :
                 _meshes?.LastMipmapBytes ?? 0,
                 globalMesh?.CapacityBytes ?? 0,
                 globalMesh?.PhysicalCapacityBytes ?? 0,
-                globalMesh?.IsMigrationInProgress ?? false),
+                globalMesh?.IsMigrationInProgress ?? false,
+                prepared.Probes,
+                prepared.Reads,
+                prepared.Loaded,
+                prepared.Missing,
+                prepared.Corrupt),
             new TextureStreamResourceDiagnostics(
                 _textures?.OwnedBindlessTextureCount ?? 0,
                 _textures?.TextureOwnerCount ?? 0,

src/AcDream.App/Rendering/RenderFrameDiagnosticsController.cs

@@ -95,7 +95,12 @@ internal readonly record struct MeshStreamResourceDiagnostics(
     long FrameMipmapBytes,
     long GlobalCapacityBytes,
     long GlobalPhysicalCapacityBytes,
-    bool GlobalMigrationInProgress);
+    bool GlobalMigrationInProgress,
+    long PreparedProbes,
+    long PreparedReads,
+    long PreparedLoaded,
+    long PreparedMissing,
+    long PreparedCorrupt);
 
 internal readonly record struct TextureStreamResourceDiagnostics(
     int OwnedBindlessTextures,
@@ -254,6 +259,8 @@ internal sealed class RenderFrameDiagnosticsController :
             + $"mipmapFrame={mesh.FrameMipmapArrayCount}/{mesh.FrameMipmapBytes} "
             + $"meshCap={mesh.GlobalCapacityBytes} "
             + $"meshPhys={mesh.GlobalPhysicalCapacityBytes}/{mesh.GlobalMigrationInProgress} "
+            + $"prepared={mesh.PreparedProbes}/{mesh.PreparedReads}/"
+            + $"{mesh.PreparedLoaded}/{mesh.PreparedMissing}/{mesh.PreparedCorrupt} "
             + $"gpuTrack={process.TrackedGpuBytes}/{process.TrackedGpuBuffers}/"
             + $"{process.TrackedGpuTextures} "
             + $"managed={process.ManagedBytes}/{process.ManagedCommittedBytes} "

tests/AcDream.App.Tests/Rendering/RenderFrameDiagnosticsControllerTests.cs

@@ -204,7 +204,8 @@ public sealed class RenderFrameDiagnosticsControllerTests
             + "lightBuffers=12 mesh=13/14/15 meshEst=16 meshUpload=17/18 "
             + "uploadFrame=19/20/21/22/23 bufferFrame=24/25/26/27 "
             + "staging=28/29/True/30 cpuMesh=31/32 mipmapFrame=33/34 meshCap=35 "
-            + "meshPhys=36/True gpuTrack=57/58/59 managed=55/56 ownedTextures=37/38 "
+            + "meshPhys=36/True prepared=60/61/62/63/64 "
+            + "gpuTrack=57/58/59 managed=55/56 ownedTextures=37/38 "
             + "particleTextures=39/40/41/42/43 compositeCache=44/45/46 "
             + "compositeAtlas=47/48 compositeUpload=49/50/51",
             actual);
@@ -314,7 +315,8 @@ public sealed class RenderFrameDiagnosticsControllerTests
         new DynamicBufferResourceDiagnostics(4, 5, 6, 7, 8, 9, 10, 11, 12),
         new MeshStreamResourceDiagnostics(
             13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
-            24, 25, 26, 27, 28, 29, true, 30, 31, 32, 33, 34, 35, 36, true),
+            24, 25, 26, 27, 28, 29, true, 30, 31, 32, 33, 34, 35, 36, true,
+            60, 61, 62, 63, 64),
         new TextureStreamResourceDiagnostics(
             37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51),
         new ProcessResourceDiagnostics(55, 56, 57, 58, 59));