llm(frank-archon): swap payload to the publisher's iq4r .rad, shape verbatim

Model swap on the radiance endpoint: MODEL_FILE moves from the in-house
qwen4exp-swift15-w4dn8-i8-hc8m.rad (116,416 MiB) to the engine author's
published qwen3.8-next-flash-fp8-iq4r-moe.rad (116,322 MiB, official
Qwen3.8-Flash-Next bf16 -> 4-bit non-uniform codebook experts + int8
trunk, card KL 0.0789 / top-1 92.85 % vs bf16). NO argument changed:
25600/5120 vram pair, 44928 host pool, fp8 KV, 3 x 200000, MTP depth 2,
wht6, MNBT 2048, froggeric v22.5 — the 2026-10-13 shape carries verbatim.

New fetch script scripts/download-frank-archon-iq4r.sh (hfget + exact
byte count 121,969,901,568 + LFS sha256, --verify-only default, ungated,
no token on the command line). Unit/serve/deployer lore re-keyed; the
seam pins the new payload id + sha256 and keeps the w4dn8 rollback
provenance. Homepage card points at the publisher repo.

Rollback: revert this commit (w4dn8 .rad stays on disk). The fp8-native
rad was deleted from dankserver 2026-10-15 (Frank's one-time rm, volume
for this payload); rebuild path documented.

scripts/serve-frank-archon.sh

@@ -1,11 +1,13 @@
 #!/usr/bin/env bash
 # serve-frank-archon.sh — frank-archon endpoint: radiance (StillDeadcode,
-# Apache-2.0) serving the OFFICIAL Qwen/Qwen3.8-Flash-Next-FP8 checkpoint at
-# NATIVE block-FP8 precision from a rad-convert container
-# (/home/dank/models/rad/qwen4exp-fp8-native.rad), on BOTH R9700s (TP=2,
-# wht6 wire), dankserver :7770. 2026-10-05 cutover from FreeToken (PR #587,
-# one card; git tag frank-archon-freetoken-pr587-20261005 is the
-# pre-cutover state).
+# Apache-2.0) serving the PUBLISHER's 4-bit-codebook container of the
+# official Qwen/Qwen3.8-Flash-Next (the engine author's own rad-convert of
+# the bf16 checkpoint: qwen3.8-next-flash-fp8-iq4r-moe.rad, fetched by
+# scripts/download-frank-archon-iq4r.sh) on BOTH R9700s (TP=2, wht6 wire),
+# dankserver :7770. 2026-10-15 payload swap from the in-house w4dn8 of the
+# Swift1.5 finetune (payload on disk = rollback; the swap commit is the
+# revert); 2026-10-05 radiance cutover from FreeToken (git tag
+# frank-archon-freetoken-pr587-20261005 is the pre-radiance state).
 #
 # The run line below IS the engine argv: the image's entrypoint is the
 # engine and its tools sit beside it on PATH. Unlike every predecessor