docs(frank-archon): rollback re-key after 2026-10-17 disk purge

The Swift1.5 w4dn8 .rad, the GLM-4.7 GGUF, and every derived model cache
were purged from dankserver (trash-staged, emptied with approval; 763 GiB
free). Rollback of the iq4r swap is now an HF re-download of the
byte-exact frank8465 mirror (LFS sha256 09dd9306...). Corrects the w4dn8
runbook header (still said LIVE) and rebuilds both Rollback sections;
log.md carries the purge record.

serverAppConfigs-docs/log.md

@@ -1865,3 +1865,34 @@ every restart since the cutover.
   backup `webui.db.bak-20261017a`; no `open-webui` restart forced — the cached
   list picks it up on the next one, and forcing it logs every family session
   out for one cosmetic string).
+
+## 2026-10-17 — dankserver disk purge: Swift w4dn8 rollback + orphan caches (docs re-key)
+
+- Ask: "dump the swift rollback and the GLM GGUF — make sure the model
+  caches and agenttrash are empty as well." Preflight first: `lsof` empty
+  on both payloads, serving trio names only the iq4r path, and a podman
+  layer census proved no deleted path backs an image container (the 121 GB
+  `16b6663d…` layer is the ENGINE image, not a model blob).
+- Staged to `/home/dank/.AGENTTRASH/20261017-dump-payloads-caches`, then
+  purged with Frank's approval: the Swift1.5 w4dn8 `.rad` (113.6 GiB,
+  rollback target), `GLM-4.7-Flash-UD-Q5_K_XL.gguf` (21 GiB, `/opt/vllm`
+  dir removed — last non-iq4r model on the box), `radiance-state` kvcache
+  tiers (69 GiB + 61 MiB, derived), `~/.radiance-cache-w4a8-*` (11 GiB
+  stale-pin compile cache), `~/.cache/frank-primary` (4.7 GiB stale-name
+  cache). Also emptied every `.AGENTTRASH` on the host (14 dirs: dated
+  batches, quadlet/config holds, both checkouts, `/etc/caddy`). 543 → 763
+  GiB free.
+- Recovery: the w4dn8 payload is byte-exact on the Hub as
+  `frank8465/Swift-1.5-Qwen3.8-Flash-Next-GPTQ-W4A8-Radiance-AMD-R9700`
+  (122,071,973,888 B, LFS sha256 `09dd9306…`) — rollback is now a
+  re-download, not a local file. Corpora (grams 41 G, kld-ref 24 G,
+  calibration JSONL) deliberately KEPT: re-convert and KLD-gate inputs.
+- Post-checks: frank-archon active, `/health` ok; iq4r serving payload
+  byte-size intact; live kvcache tier (122 MiB) untouched; no process
+  references a deleted path.
+- Docs re-keyed: AGENTS.md fleet row + frank-archon section + both runbook
+  index rows; iq4r runbook Rollback rewritten (HF re-fetch procedure — the
+  fetch script's REPO/RAD_NAME/STAGE/DEST/SIZE/SHA256 constants are
+  hardcoded, so retargeting at the mirror is a script edit); w4dn8 runbook
+  header corrected (was still "LIVE", never updated at retirement) and its
+  Rollback table rebuilt.