rename frank-small → frank-secondary (Dankclaw llama.cpp :7771)

Cross-cutting rename of the current llama.cpp endpoint on the RTX 3090
(port 7771) from frank-small to frank-secondary:

- Service trio: scripts/{frank-small.env,frank-small.service,
  serve-frank-small.sh,download-frank-small.sh} → frank-secondary.*
- Test: tests/frank_small_unit.bats → tests/frank_secondary_unit.bats
- Runbooks: serverAppConfigs-docs/LLM/frank-small-*.md →
  frank-secondary-*.md (9 files); the FreeToken runbook stays
  freetoken-frank-small.md (it documents the retired CUDA-era service)
- Identifiers: FRANK_SMALL→FRANK_SECONDARY, llm_small→llm_secondary,
  LLM_SMALL_*→LLM_SECONDARY_*, deploy_llm_small→deploy_llm_secondary
- Historical references to the OLD frank-small (FreeToken/CUDA on the
  3090, and the Dankserver service that became frank-medium) are
  preserved verbatim — they describe what the service was called
  at the time.

serverAppConfigs-docs/Operations/Fleet Ops Playbook.md

@@ -12,7 +12,7 @@ timestamp: 2026-10-05T00:00:00-07:00
 
 Use when `:7770`/`:7771` gives **connection refused** (not a timeout) and the
 service was not crashed. Applies to `frank-medium` (dankserver, root unit),
-`frank-small` (dankclaw, root unit), `frank-large` (dankclaw, rootless
+`frank-secondary` (dankclaw, root unit), `frank-large` (dankclaw, rootless
 Quadlet).
 
 **1. Classify the stop before touching anything**
@@ -103,7 +103,7 @@ the sudo journal names who and when: `journalctl -b | grep sudo`.
 ## Scratch vLLM boot on a fleet GPU host — stop-first law
 
 Any scratch/experimental vLLM container on a host that also runs a production
-LLM service (`frank-primary`, `frank-large`, `frank-small`) MUST stop the
+LLM service (`frank-primary`, `frank-large`, `frank-secondary`) MUST stop the
 production unit first, and the window script must verify it. Two independent
 failure modes if skipped: