docs(paged): lever1 gather-fusion bench landed - checkpoint + attribution (patch 0028)

Anchors the rigorous same-session A/B validation of patch 0028 (residual conv-state
tap k_get_rows fusion) on this worktree branch with sign-off attribution. The
regenerated 0028 patch + bench-updated LEVER1_GATHER_RESULTS.md first landed via a
concurrent origin/master merge (c1f1d1e8e) that swept the staged files; this records
the provenance and the bench summary in the checkpoint.

Gate (bit-exact, greedy --temp 0 --seed 1 -n 48): dense q36-27b-nvfp4
5951a5b4d624ce891e22ab5fca9bc439, MoE q36-35b-a3b-nvfp4 07db32c2bcb78d17a43ed18bc22705cd
(both == baseline; base == lever1). decode_agg npl128: dense 369.95 -> 377.83 t/s
(+2.13%, 96.6% of vLLM), MoE 763.47 -> 777.95 t/s (+1.90%, 86.3% of vLLM). nsys MoE
decode: k_get_rows_float 17334 -> 15414 inst (-1920), 358.37 -> 133.52 ms, step -3.13 ms.

Assisted-by: Claude:opus-4.8 [Claude Code]
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

backend/cpp/llama-cpp/patches/paged/LEVER1_GATHER_PROGRESS.md

@@ -24,3 +24,11 @@ update via ggml_ssm_conv_update_inplace_ids (src[4]=ids discriminator). Mirrors
 - Patch: patches/paged/0028-qwen35-recurrent-state-gather-fusion.patch (LocalAI worktree)
 - Docs: LEVER1_GATHER_RESULTS.md (full bench tables)
 - DGX bench outs: ab_{dense,moe}_{base,lever1}.out, nab_{base,lever1}.kern.csv, md5{d,m}_{base,lever1}.txt
+
+## gather-bench landed (worktree)
+
+Rigorous same-session A/B (DGX GB10) validated patch 0028 bit-exact and lifting both models;
+results folded into LEVER1_GATHER_RESULTS.md and the regenerated 0028 patch. The bench files
+first landed in this worktree via concurrent merge c1f1d1e8e (origin/master sweep); this commit
+re-anchors them with sign-off attribution. DGX llama tree dedicated commit: fafe878 (code
+byte-identical to 944636c; docs-only amend). Both trees committed, not pushed.