docs: frank-small is Gemma4-12B QAT now — new runbook, Qwen retired as rollback target

AGENTS.md topology, Active Services, the CUDA-quant-KV lesson (f16 is no
longer why), and the runbook index. New frank-small-gemma4-12b runbook:
payload digests, the SWA/q8 arithmetic behind --fit's 262k window, the
MTP-sidecar + ngram-mod chain, the always-accepted reasoning_effort, and
the fit-probe error that looks like a fault at boot. The Qwen runbook and
both indexes carry the retirement; work log updated.

serverAppConfigs-docs/LLM/index.md

@@ -87,11 +87,15 @@ frank-small, port 7771]
   overlay) on the gfx1151 iGPU — two 200k conversations over one
   400,384-position pool, deployed flags, memory model, client contract,
   troubleshooting
-- [[frank-small-qwen38-gsq-rco]] — ACTIVE frank-small runbook since 2026-09-16
+- [[frank-small-gemma4-12b]] — ACTIVE frank-small runbook since 2026-09-17
   (root systemd unit, port 7771): mainline llama.cpp serving
-  ISTA-DASLab/Qwen3.8-27B-GSQ-RCO IQ3_S on the RTX 3090, with the model's own
-  Multi-Token Prediction head for speculative decoding and the BF16 projector
-  for the fleet's image path
+  HauhauCS/Gemma4-12B-QAT-Uncensored-HauhauCS-Balanced Q4_K_M on the RTX
+  3090, with the separate MTP assistant sidecar chained behind ngram-mod,
+  q8_0 KV, and `--fit` sizing the full 262k window into ~12 GiB
+- [[frank-small-qwen38-gsq-rco]] — RETIRED 2026-09-17 (rollback target): the
+  prior frank-small runbook (2026-09-16 → 09-17), ISTA-DASLab
+  Qwen3.8-27B-GSQ-RCO IQ3_S with the model's own in-file MTP head and
+  f16 KV at 131k
 - [[x4-pair-experiment]] — MEASURED 2026-09-16: what mainline llama.cpp can and
   cannot do with the 3090 + Strix Halo pair, over their only link (the 3090's
   Gen4 x4). The tensor inventory that decides any split, the single flag (`-ot`)