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.

serverAppConfigs-docs/LLM/frank-medium-radiance-mxfp4.md

@@ -602,7 +602,7 @@ but not both. That is the wall, and it is capacity, not scheduling.
 ### Watching it instead of measuring it by hand
 
 Everything above was diagnosed with ad-hoc probes. The same signals are now
-scraped — Prometheus has `frank-medium` and `frank-large` jobs
+scraped — Prometheus has `frank-medium` and `frank-dragoon` jobs
 (`shared/prometheus/prometheus.yml`), so the numbers that matter have history:
 `vllm:kv_cache_usage_perc` (per-card pool fill), `vllm:num_requests_waiting`
 (queue depth), `rate(vllm:prefix_cache_hits_total[5m]) /