docs(frank-archon): record the bf16 KV shape, its measured cost, and the probe

Runbook section `2026-10-11 — unquantized KV at 2 x 200,000`: the dtype law
(only bf16|fp8, no K/V split; the QSA block key is dtype-fixed, which is why
bf16 costs 1.89x and not 2x), the pool formula that reproduces both live
boots within 0.1%, the seqs-3-to-2 provenance (the tcclaviger fork's
torch.compile constraint, not radiance's), the boot ledger, and the A/B.

The A/B, fp8 control arm through a transient FRANK_ARCHON_ENV_FILE drop-in:
prefill -29% (4,379 -> 3,126 cold), TTFT at the full window +25% (the 2 x 197k
pair: 110.5 s -> 138.1 s), decode inside the +-3% band on two of three passes,
draft acceptance UP 0.661 -> 0.740. The price is prefill, not decode. Open
call for Frank: keep exact KV, or take the cheap fp8 2 x 200k fit (pool 3,648).

Also corrects two stale index entries (w4dn8 said STAGED, fp8-native said
ACTIVE), adds the worklog entry, and commits the verification tool as
scripts/probe-frank-archon-kv.py — it carries the probe law that cost two
false negatives: radiance answers in reasoning_content, so a chat probe with a
small budget reads as empty content + finish_reason stop on a healthy server.
Tests 368/368.

serverAppConfigs-docs/LLM/index.md

@@ -152,11 +152,17 @@ frank-zealot, port 7771]
   target; payload on disk; owns the measured boot-pair table)**: the same
   runtime and the same 2 x 200,704 + f16 KV shape one quant rung lower —
   104.8 tok/s, 3,571 MiB true free
-- [[frank-archon-radiance-swift15-w4dn8]] — **STAGED (campaign running)**:
+- [[frank-archon-radiance-swift15-w4dn8]] — **ACTIVE since 2026-10-08**:
   Swift1.5 Qwen3.8-Flash-Next BF16 → GPTQ-calibrated W4Dn8 `.rad` on radiance
   1.0.13 (recipe + 10M-token calibration + KLD gate vs the BF16 container);
-  replaces the FP8-native payload when the gates pass
-- [[frank-archon-radiance-qwen38-native-fp8]] — **ACTIVE since 2026-10-05**
+  the FP8-native payload remains the rollback. **2026-10-11: the KV cache is
+  UNQUANTIZED (bf16) at 2 x 200,000** — pool 3543 → 6912 MiB (386,904 →
+  462,752 tokens), weights slab 26071 → 22208, host pool 44928,
+  `--max-num-seqs 2`. bf16 costs 1.89x fp8 per token (the QSA block key is
+  dtype-fixed, so it is not a clean 2x); measured price is prefill (-29%),
+  NOT decode, and spec-decode acceptance rose 0.661 → 0.740.
+- [[frank-archon-radiance-qwen38-native-fp8]] — **RETIRED 2026-10-08 (the
+  w4dn8 swap replaced it; its `.rad` stays on disk as the rollback)**
   (root systemd unit, port 7770): the StillDeadcode **radiance** engine
   (C++/HIP, libr4d gfx1201 kernels, digest-pinned 287 MiB image, engine as
   the image entrypoint) serving the OFFICIAL `Qwen/Qwen3.8-Flash-Next-FP8`