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- Historical references to the OLD frank-small (FreeToken/CUDA on the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/LLM/frank-medium-llamacpp-dflash2.md

@@ -312,7 +312,7 @@ came up healthy and *text-only*: image requests answered 500 "image input is
 not supported — hint: … provide the mmproj" and the load log had no mmproj
 line, so `llama-server` fb27a525 does not pick up `mmproj*.gguf` from the
 model directory. The serve script now passes `--mmproj` explicitly (the
-frank-small pattern), refuses to start without the file when vision is on, and
+frank-secondary pattern), refuses to start without the file when vision is on, and
 the deploy handler's preflight checks for it. Verified end-to-end after the
 fix: a generated 64x32 test image was described from its pixels — with
 thinking on the model reasoned about "the three horizontal bars" (its reading
@@ -724,7 +724,7 @@ fleet.
   2026-09-15, whose `--split-mode layer` measurements this service reuses
 - [[Dual-R9700-Cooperation]] — why the two cards cannot take part in a
   collective, and every software escape that is closed
-- [[frank-small-qwen38-gsq-rco]] — the fleet's other llama.cpp endpoint (RTX
+- [[frank-secondary-qwen38-gsq-rco]] — the fleet's other llama.cpp endpoint (RTX
   3090, MTP, the image path)
 - [[Dankserver System Specs]] — hardware inventory
 - [[frank-medium-batch-ubatch]] — the batch/ubatch sweep that set the deployed