Merge reviewed LES normalization into bounded 2D dev scope

docs/validation/2d_scope.md

@@ -1,9 +1,11 @@
 # Bounded 2D implementation and validation scope
 
-This inventory uses dev `8403956a9afc0b0bb89265cec374392013d89016` as its
-production source checkpoint. The accompanying tests add coverage; their presence
-is not a passing GPU receipt. Historical campaigns retain their original source
-identities and acceptance gates.
+This inventory starts from dev `8403956a9afc0b0bb89265cec374392013d89016` and
+integrates only the reviewed LES normalization production correction from
+`95cb6d2b9f43c1bdd46cbf27f03f0dfc0877cfb0`. The merged production bytes match that
+tested candidate exactly; the scope-test changes are retained from `53fad767`.
+GPU receipts remain associated with their exact tested commits, not relabeled as
+a new merged-commit run. Historical source identities and gates remain unchanged.
 
 ## Implementation boundaries
 
@@ -23,28 +25,28 @@ identities and acceptance gates.
 
 | Area | Available evidence | Boundary of the conclusion |
 |---|---|---|
-| MRT cylinder flow and observation windows | Full matched uniform/refined MRT DFG and the window-ledger campaign passed their frozen periodicity, reference and matched-comparison gates. The window campaign used `185a919`; dev adds only a docstring correction. | This does not qualify other collision/boundary combinations or every refinement interface. Timing improvements are not additional accuracy evidence. |
+| MRT cylinder flow and observation windows | Full matched uniform/refined MRT DFG and the window-ledger campaign passed their frozen periodicity, reference and matched-comparison gates. The window campaign used `185a919`; its MRT/no-LES numerical path remains unchanged. Current dev also contains independently scoped test/documentation changes and the LES correction, which do not extend MRT qualification. | This does not qualify other collision/boundary combinations or every refinement interface. Timing improvements are not additional accuracy evidence. |
 | Uniform forced channel | Six Poiseuille GPU cases on `8403956`: SRT/TRT/MRT at wall-normal resolutions H16/H32 passed. | This is the tested analytic channel configuration, not open-boundary or all-layout qualification. |
-| Uniform restart | Ten SRT/MRT checkpoint GPU tests passed on `8403956`. | The new representative TRT same-method double-buffer continuation test still requires its own GPU receipt; no LES, Jet or refined checkpoint claim follows. |
-| Taylor–Green refinement | Independent topology checks for the exact TG setup are available. The companion phase regression checks the actual lattice-rate configuration. | The physical interface-accuracy gate remains open. Topology and phase setup checks do not establish convergence or close that gate. |
+| Uniform restart | Ten SRT/MRT checkpoint GPU tests passed on `8403956`; the separate representative TRT same-method double-buffer continuation GPU case also passed (one test). | This covers the tested same-method continuation configurations. No LES, Jet or refined checkpoint claim follows. |
+| Taylor–Green refinement | Independent topology checks are available. The actual-rate phase GPU regression passed one test across two layouts, with errors 1.584e-7 and 4.500e-9. | The physical interface-accuracy gap remains open. Passing topology and phase checks does not establish convergence or close that accuracy gate. |
 | Porous Couette and annulus | Prior campaign evidence exists and must remain associated with its original setup and source. | The reconstructed annulus is a validation helper, not qualification of a public boundary-condition API. Do not infer absence of evidence from a missing current rerun. |
-| LES and other combinations | Separate scalar and uniform-flow normalization evidence exists for the reviewed temporary correction. | That correction is not integrated into this source checkpoint. Do not transfer its acceptance to unchanged production, or to TRT/MRT LES, forcing, EsoPull, objects or refinement. |
+| LES normalization | The reviewed correction is integrated. Exact `95cb6d2` GPU validation passed all nine observations and frozen gates, with three warm-up/reset records, verified 101-source/import identity, DONE and exit 0. Last two SGS decrement relative errors were 6.276e-4 and 6.124e-5 against the unchanged 0.15 gate. | Scope is unforced uniform D2Q9/SRT, shifted FP32, double-buffer streaming and the tested wall-bounded x-periodic shear. No TRT/MRT LES, forcing, EsoPull, objects, refinement or 3D turbulence qualification follows. |
 
 Historical uniform SRT cylinder-startup and inlet-rounding findings remain separate
 from the passed MRT DFG result. Raw exchange/window consistency is a measurement
 contract, not a general stress or force-accuracy certification. Existing source-pinned
 runners may intentionally reject a newer checkout; never silently repin old receipts.
 
-## Small next batch
+## Remaining work
 
-1. Cross-review the added TRT checkpoint and actual-rate TG phase tests, then run
-   their applicable checks with exact checkout/import receipts. Preserve the
-   existing SRT checkpoint cases and numerical criteria.
-2. Run the single added TRT checkpoint GPU case with the same method on both sides
-   of save/load. Record its result separately from the ten existing SRT/MRT passes.
-3. Continue the existing TG accuracy investigation using its actual fine-level
-   rates and the established analytic convention. Keep the accuracy gate open
-   until the relevant physical comparison passes.
+The related host checks passed (67 checks); they do not replace the GPU or
+physical-accuracy evidence above. Preserve the existing SRT checkpoint cases,
+historical LES manifests and all frozen numerical criteria.
+
+Continue the TG accuracy investigation using its actual fine-level rates and
+the established analytic convention. Keep the physical accuracy gate open until
+the relevant comparison passes. Review this integration independently before
+publication; no new merged-commit GPU run is claimed here.
 
 No repeat of the accepted full MRT DFG or Cartesian expansion across unsupported
 combinations is required by this document. Main integration remains a separate