docs(runtime): approve render scene program

docs/README.md

@@ -25,16 +25,21 @@ banner cannot silently override the current program state.
   typed budget dimension; incomplete destinations remain in portal space and
   receive retail's centered wait cue instead of forced early reveal. E6's
   deterministic/resource gates and capped, uncapped, and dense-Arwic
-  physical-local routes pass. Slices F/G await their explicit approval gate.
-  See the [Slice E streaming report](research/2026-07-24-slice-e-cost-budgeted-streaming-report.md).
+  physical-local routes pass. Slices F–L, including the F/G and J approval
+  gates, were explicitly authorized 2026-07-24; Slice F is active.
+  Their post-E evidence, ownership map, shadow-comparison design, cutover
+  sequence, and acceptance matrix are implementation-ready in the
+  [F/G render-scene plan](plans/2026-07-24-modern-runtime-slices-f-g-render-scene.md).
+  See also the [Slice E streaming report](research/2026-07-24-slice-e-cost-budgeted-streaming-report.md).
 - **Completed gates:** R6 locomotion/collision/projectile/teleport/radar and
   the final two-client portal-out/materialization observer comparison (`#218`).
 - **Separate visual verification:** the shared-alpha lifestone/particle result
   in `#225`; its connected resource-lifetime and performance routes pass.
 - **Carried behavior debt:** `#153` (far teleport onto an unstreamed edge),
   `#116` (two narrowed slide-response cases), and divergence rows TS-50/TS-51.
-- **Deferred engineering tracks:** render ECS/MP3 remains behind its explicit
-  user decision gate; Linux/headless automation (Track LH) remains future work.
+- **Active engineering track:** render ECS/MP3 is executing from the
+  implementation-ready F/G plan, followed by the approved Linux/headless
+  automation slices. The pre-F/G runtime rollback anchor is `e7d9d6fa`.
 - **Divergence audit:** 178 active rows — IA 17, AD 37, AP 85, TS 34,
   and UN 5 — plus the retained retired TS-37 history note.
 - **Latest automated baseline:** Release build succeeds; 8,164 tests pass and