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.

shared/prometheus/rules/llm-fleet.yml

@@ -1,8 +1,8 @@
 # Alerting and recording rules for the LLM fleet.
 #
-# One metric namespace: llamacpp:* — frank-secondary and frank-large, both
+# One metric namespace: llamacpp:* — frank-zealot and frank-dragoon, both
 # llama.cpp with /metrics (the family verified from /metrics on 2026-09-16
-# and 2026-09-20). frank-primary LEFT the family 2026-10-05: FreeToken (the
+# and 2026-09-20). frank-archon LEFT the family 2026-10-05: FreeToken (the
 # PR587 ROCm engine) has no /metrics endpoint, so its scrape job was
 # deleted rather than left never-green.
 # (The netavark published-port quirk that forces the Dankclaw endpoints
@@ -110,8 +110,8 @@ groups:
         annotations:
           summary: "{{ $labels.job }}: scrape target down for 2 minutes"
           description: >-
-            Prometheus cannot reach the LLM endpoint. frank-secondary and
-            frank-large are root units on Dankclaw: `systemctl is-active
-            frank-secondary` / `frank-large`. Both scraped endpoints export
-            the llamacpp:* family. (frank-primary left the scrape set
+            Prometheus cannot reach the LLM endpoint. frank-zealot and
+            frank-dragoon are root units on Dankclaw: `systemctl is-active
+            frank-zealot` / `frank-dragoon`. Both scraped endpoints export
+            the llamacpp:* family. (frank-archon left the scrape set
             2026-10-05 — FreeToken exports no /metrics.)