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.

tests/observability_quadlet.bats

@@ -316,7 +316,7 @@ PAIRS
 @test "prometheus scrapes every LLM endpoint that exports metrics" {
     # The LLM endpoints are the services whose behaviour this fleet argues about
     # most (KV pressure, prefix-cache reuse, queue depth). Both Dankclaw
-    # endpoints export the llamacpp:* family. frank-primary LEFT the set
+    # endpoints export the llamacpp:* family. frank-archon LEFT the set
     # 2026-10-05: the FreeToken PR587 ROCm engine has NO /metrics endpoint —
     # scraping it was a structural never-green (404), so the job was deleted
     # rather than left vacuous (the Lucebox DS4.1 precedent, 2026-09-26).
@@ -325,18 +325,18 @@ PAIRS
     # container, and on this netavark host a container can only reach the
     # host's LAN IP at a PUBLISHED port — a host-process bind like
     # llama-server's 0.0.0.0:7770 is refused at 192.168.0.143:7770 while it
-    # answers at 169.254.1.2:7770 (why frank-secondary stayed red by construction
+    # answers at 169.254.1.2:7770 (why frank-zealot stayed red by construction
     # for days until the 2026-09-20 /targets audit).
     local cfg="$REPO_ROOT/shared/prometheus/prometheus.yml"
-    grep -q '"host.containers.internal:7771"' "$cfg" || { echo "frank-secondary not scraped"; return 1; }
-    grep -q '"host.containers.internal:7770"' "$cfg" || { echo "frank-large not scraped"; return 1; }
+    grep -q '"host.containers.internal:7771"' "$cfg" || { echo "frank-zealot not scraped"; return 1; }
+    grep -q '"host.containers.internal:7770"' "$cfg" || { echo "frank-dragoon not scraped"; return 1; }
     ! grep -q '"192.168.0.235:7770"' "$cfg"
     grep -q '"host.containers.internal:7770,192.168.0.235:7770"' "$cfg" \
-        && { echo "frank-primary folded into a Dankclaw gateway target"; return 1; }
-    for job in frank-secondary frank-large; do
+        && { echo "frank-archon folded into a Dankclaw gateway target"; return 1; }
+    for job in frank-zealot frank-dragoon; do
         grep -q "job_name: \"$job\"" "$cfg" || { echo "no scrape job for $job"; return 1; }
     done
-    ! grep -q 'job_name: "frank-primary"' "$cfg"
+    ! grep -q 'job_name: "frank-archon"' "$cfg"
     # None of them is reached through a guarded vhost: Prometheus cannot solve
     # an Anubis challenge, so a franksdank.cloud target is red by construction.
     ! grep -qE '^\s*-\s*"?https?://[^"]*franksdank' "$cfg"
@@ -383,11 +383,11 @@ for want in ('job:llm_prefix_cache_reuse:rate5m',
 # Every rule must be keyed to a series that actually exists. A rule naming a
 # series nobody exports evaluates nothing forever and errors never — the
 # failure this seam exists for. Since the 2026-09-26 cutover the only scraped
-# LLM runtime is llama.cpp (frank-secondary, frank-large); the vllm: family left
+# LLM runtime is llama.cpp (frank-zealot, frank-dragoon); the vllm: family left
 # with frank-medium's radiance runtime and must not survive in any expr.
 exprs = [r.get('expr', '') for g in d['groups'] for r in g['rules']]
 # llama.cpp families measured from /metrics on 2026-09-16 and 2026-09-20
-# (frank-secondary, frank-large). Anything else is a guess.
+# (frank-zealot, frank-dragoon). Anything else is a guess.
 live = {'llamacpp:prompt_tokens_total', 'llamacpp:prompt_tokens_cached_total',
         'llamacpp:requests_deferred', 'llamacpp:requests_processing',
         'llamacpp:spec_decode_num_drafts_total',