docs(runtime): close Slice J and activate Slice K

Record the shared graphical/no-window reset architecture, deterministic lifecycle evidence, exact rollback point, and synchronized project guidance before beginning the Linux headless host.

Co-authored-by: Codex <noreply@openai.com>

docs/architecture/acdream-architecture.md

@@ -241,7 +241,8 @@ src/
     World/
       RuntimeWorldEnvironmentState.cs -> canonical calendar/time/weather owner
       RuntimeWorldTransitState.cs -> canonical reveal generation/readiness owner
-    -> J3–J6 complete; J7 composition-root convergence active
+    RuntimeGenerationReset.cs -> one retryable canonical-generation reset
+    -> Slice J complete; graphical and no-window hosts share one GameRuntime
     -> may reference Core, Core.Net, Content, and Plugin.Abstractions only
     -> must never reference App, UI, Silk.NET, OpenAL, Arch, or ImGui
   

docs/architecture/code-structure.md

@@ -479,7 +479,7 @@ useful ordering seam, but its ownership status is **partial**.
 | Projectile simulation | **J5.6 complete** | `RuntimeEntityRecord`/`RuntimePhysicsState` own the canonical projectile component, exact-key workset, prediction/correction state, unchanged retail quantum/integration/sweep/collision loop, and cell commits. App resolves immutable Setup/DAT shape input and projects committed render, shadow, and effect-pose results only (`2aee3356`). |
 | Landblock presentation | **Complete** | `LandblockBuildFactory` owns the captured-origin DAT transaction; concrete render/physics/DAT-static publishers and `LandblockPresentationPipeline` own typed-meter publication and exact retryable retirement. `StreamingController` owns stable destination/control/unload/Near/Far queues and destination reservation. CPU mesh-cache restaging requires an exact live owner. `StreamingOriginRecenterCoordinator` serializes old-window retirement with teleport/session origin lifetimes. `GameWindow` retains construction and one pipeline field only (`c79d0a49`, closeout `4a205a3e`; Slice E closeout `91e82c3c`). |
 | Render-frame orchestration | **Complete** | `RenderFrameOrchestrator` owns the GPU-flight, resource, world/PView/shared-alpha, private-presentation, diagnostics, screenshot, and recovery graph. `GameWindow.OnRender` takes one logical window-size snapshot and performs one immutable handoff (`9d7df1bf`). |
-| Unified `GameEntity` | **Slice J active at J7** | Canonical identity, retained-object lifetime, direct views, ordered entity/object deltas, J4 gameplay state, and the complete J5 action/combat/magic/movement/physics/remote/projectile simulation graph share failure-safe Runtime owners while exact graphical sidecars stay in App. J5 closeout proves Runtime-only parity and one terminal ownership ledger. J6 moved world environment, reveal-generation truth, exact F751/Position destination correlation, and typed graphical-host acknowledgement into Runtime. J7 now composes those already-proven owners behind one `GameRuntime` root without adding another state layer. |
+| Unified `GameEntity` | **Slice J complete** | Canonical identity, retained-object lifetime, direct views, ordered entity/object deltas, gameplay state, action/combat/magic/movement/physics/remote/projectile simulation, world environment, reveal/transit truth, and host acknowledgement share failure-safe Runtime owners while exact graphical sidecars stay in App. One `GameRuntime` composes the graph. `RuntimeGenerationReset` is the sole retryable canonical-generation reset for graphical and no-window hosts; the deterministic direct host proves lifecycle, commands, portal, reconnect, GUID reuse, fault recovery, isolation, and terminal convergence without presentation assemblies (`a9a822f2`). |
 
 ### 4.3 Revised extraction sequence