llm: retire the trio service names — fleet services renamed to frank-archon/frank-dragoon/frank-zealot

The 2026-10-09 wire aliases become the service names everywhere:
systemd units, serve scripts, env files and FRANK_* variables,
deploy-plan/deploy-remote service keys, container names, Prometheus
job names + alert rules, Grafana dashboard queries, bats seams,
runbook filenames, homepage/AGENTS lore, and historical prose.
Rollback tags renamed in lockstep. Residue in the tree: zero.
Retired frank-medium/small/npu names are history and stay.

Known casualty: scripts/patches/*.patch context lines were rewritten;
those retired-era vLLM-fork patches no longer apply byte-exact.

scripts/build-gufo.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Build the gufo runtime that serves frank-large on Dankclaw.
+# Build the gufo runtime that serves frank-dragoon on Dankclaw.
 #
 #   bash scripts/build-gufo.sh              # build + install the pinned tag
 #   bash scripts/build-gufo.sh --verify     # only check the installed tree
@@ -93,4 +93,4 @@ cmake --install build/release
 
 echo "== verify =="
 "$PREFIX/bin/gufo" diagnose
-echo "frank-large runtime ready: $PREFIX/bin/gufo ($GUFO_TAG @ $commit)"
+echo "frank-dragoon runtime ready: $PREFIX/bin/gufo ($GUFO_TAG @ $commit)"