feat(streaming): establish cost budget ledger

Add the validated frame-work profile, deterministic completion charges, and shadow admission meter before enforcing the scheduler in Slice E2. Lifecycle artifacts now expose elapsed work, would-yield limits, backlog bytes/age, and pending owner ledgers without changing accepted execution.

Tests: dotnet build AcDream.slnx -c Release --no-restore; dotnet test AcDream.slnx -c Release --no-build --no-restore (8124 passed, 5 skipped)

src/AcDream.App/Composition/SessionPlayerComposition.cs

@@ -295,7 +295,8 @@ internal sealed class SessionPlayerCompositionPhase
             nearRadius: nearRadius,
             farRadius: farRadius,
             presentationPipeline: live.LandblockPipeline,
-            clearPendingLoads: streamerLease.Resource.ClearPendingLoads);
+            clearPendingLoads: streamerLease.Resource.ClearPendingLoads,
+            workBudgetOptions: d.Options.StreamingWorkBudgets);
         var streamingOriginRecenter = new StreamingOriginRecenterCoordinator(
             streaming,
             d.WorldOrigin);