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.

tests/frank_archon_unit.bats

@@ -3,8 +3,10 @@
 #
 # This file asserts the RADIANCE shape (StillDeadcode engine, digest-pinned
 # stilldeadcode/radiance image, BOTH R9700s TP=2 on the wht6 wire, serving
-# the Swift1.5 Qwen3.8-Flash-Next GPTQ-w4 .rad built by
-# scripts/convert-swift15-w4dn8.sh). It replaces the FreeToken seam of
+# the publisher's 4-bit-codebook .rad of the official Qwen3.8-Flash-Next
+# (fetched by scripts/download-frank-archon-iq4r.sh; the in-house
+# Swift1.5 w4dn8 .rad of scripts/convert-swift15-w4dn8.sh is the on-disk
+# rollback). It replaces the FreeToken seam of
 # 2026-10-05 (git tag frank-archon-freetoken-pr587-20261005) and pins what
 # flags alone do not say: the served window clears the harness worst case,
 # the KV pool backs seqs x max-model-len at the declared cache dtype (an
@@ -28,7 +30,7 @@ SERVE="$REPO_ROOT/scripts/serve-frank-archon.sh"
 TTM_LIB="$REPO_ROOT/scripts/ttm-preflight.sh"
 ENV_FILE="$REPO_ROOT/scripts/frank-archon.env"
 REMOTE_DEPLOY="$REPO_ROOT/scripts/deploy-remote.sh"
-DOWNLOAD="$REPO_ROOT/scripts/download-frank-archon-swift15.sh"
+DOWNLOAD="$REPO_ROOT/scripts/download-frank-archon-iq4r.sh"
 BUILD="$REPO_ROOT/scripts/convert-swift15-w4dn8.sh"
 HFGET="$REPO_ROOT/scripts/hfget.sh"
 TEMPLATE="$REPO_ROOT/scripts/qwen38-froggeric-v22.5.jinja"
@@ -381,18 +383,23 @@ nosudo_bin() {
     grep -q 'exec podman wait "$FRANK_ARCHON_CONTAINER"' "$SERVE"
 }
 
-@test "the model id matches the payload's build and fetch scripts" {
-    # The payload dir/file are the convert script's output layout; the fetch
-    # script must name the repo the convert stages from. (FP8-native era,
-    # the rollback payload, keeps its own trio: build-frank-archon-rad.sh +
-    # download-frank-archon.sh.)
+@test "the model id matches the payload's fetch script (and the rollback's build script)" {
+    # The deployed payload is the PUBLISHER's .rad: the fetch script names
+    # the repo, the file, and the Hub's LFS sha256; nothing is converted on
+    # the host for it. The in-house w4dn8 rollback keeps its own trio
+    # (convert-swift15-w4dn8.sh + download-frank-archon-swift15.sh, and the
+    # fp8-native era keeps build-frank-archon-rad.sh +
+    # download-frank-archon.sh).
     grep -q '^FRANK_ARCHON_MODEL_DIR=/home/dank/models/rad$' "$ENV_FILE"
-    grep -q '^FRANK_ARCHON_MODEL_FILE=qwen4exp-swift15-w4dn8-i8-hc8m.rad$' "$ENV_FILE"
-    grep -q 'qwen4exp-swift15-w4dn8-i8-hc8m.rad' "$BUILD"
-    grep -q 'ukisai/Swift1.5-Qwen3.8-Flash-Next' "$DOWNLOAD"
+    grep -q '^FRANK_ARCHON_MODEL_FILE=qwen3.8-next-flash-fp8-iq4r-moe.rad$' "$ENV_FILE"
+    grep -q 'StillDeadcode/qwen3.8-next-flash-fp8-iq4r-moe' "$DOWNLOAD"
+    grep -q 'qwen3.8-next-flash-fp8-iq4r-moe.rad' "$DOWNLOAD"
+    grep -q '0af5e96244e80c21ac8edca1719dae49b8a201b94a2f3994c3e24026ceaa4d20' "$DOWNLOAD"
     grep -q 'hfget.sh' "$DOWNLOAD"
     # The repo is UNGATED — no token may be required on the fetch path.
     ! grep -q 'HF_TOKEN' "$DOWNLOAD"
+    # Rollback provenance: the w4dn8 build script names its payload.
+    grep -q 'qwen4exp-swift15-w4dn8-i8-hc8m.rad' "$BUILD"
 }
 
 @test "no bare HIP-reserved env var is defined" {