feat(monitoring,harness): follow frank-medium onto vllm:* metrics and fix red-by-construction targets

The radiance TP=2 cutover changed the metric namespace frank-medium exports
(llamacpp:* -> vllm:*) and left two scrape targets addressing host processes
by an address a container cannot reach.

- shared/prometheus/rules/llm-fleet.yml: two namespaces side by side. Added
  LlmRequestsWaiting, LlmKvCacheSaturated (vllm-only gauges llama.cpp never
  had), the job:llm_vllm_prefix_cache_reuse:rate5m and
  job:llm_spec_accept_length:rate5m recording rules, and re-cut
  LlmPrefixCacheCollapse / LlmSpecDecodeOff to OR both families with
  per-family traffic floors so an idle endpoint cannot fire them. Every
  expression validated against live Prometheus.
- shared/prometheus/prometheus.yml: frank-small -> host.containers.internal:7771
  and frank-large scraped at host.containers.internal:7770. Both are HOST
  processes on Dankclaw and netavark DNATs published container ports only, so
  the LAN-IP targets were red by construction; frank-large's CIRU llama.cpp
  build does export the llamacpp:* family, contra the old comment.
- tests/observability_quadlet.bats: the two seams now encode the new contract
  (per-endpoint reachability by process type; every named series must be on the
  measured list for its engine; engine-independent rules must name both).
- homepage docs.html/services.json: frank-medium sees pictures, frank-large is
  CIRU Orca with a single seat (was halogen w4b, two seats, 200k).
- docs: radiance runbook is ACTIVE (deployed flags, three-arm battery, verified
  capabilities, rollback, replica-era sections labelled); llama.cpp runbook
  carries the SUPERSEDED banner; Dual-R9700-Cooperation states the measured
  verdict; Observability records the namespace split and the DNAT lesson;
  AGENTS.md topology/frank-medium/Model Config/Benchmarking Policy/runbook
  index flipped; both indexes updated; work-log entry added.

Also repaired agent-pass damage: prose prepended above frontmatter openers,
duplicated runbook bodies, a literal tool-call token pasted into a runbook, and
an index destroyed by diff artifacts (restored from HEAD, flips re-applied).
Vault link check: 128 pages, 0 unresolved. ./tests/run.sh: 325 pass.

serverAppConfigs-docs/LLM/index.md

@@ -1,13 +1,13 @@
 # LLM Fleet — Knowledge Base
 
-Documentation for the LLM inference fleet on the two hosts (2026-09-19):
-**mainline llama.cpp on Dankserver** serving frank-medium as one layer-split
-process across both Radeon AI PRO R9700 cards (orcarouter Qwen3.8-27B-
-Uncensored Q8_0 + the z-lab DFlash2 Q4_K_M drafter, balanced 32:33), and TWO
-endpoints on Dankclaw — the CIRU v4.4.1 runtime (frank-large, jcbtc
-Qwen3.8-Flash-CIRU-STRIX-Orca w4b on the gfx1151 iGPU, port 7770) and mainline
-llama.cpp (frank-small, HauhauCS Gemma4-12B QAT Q4_K_M with MTP and vision on
-the RTX 3090, port 7771).
+Documentation for the LLM inference fleet on the two hosts (2026-09-20):
+**vllm-radiance on Dankserver** serving frank-medium as ONE tensor-parallel
+process across both Radeon AI PRO R9700 cards (just1moremodel
+Qwen3.8-27B-Uncensored MXFP4-awq + the z-lab DFlash2-FP8 drafter, TP=2 over the
+R4D one-shot allreduce), and TWO endpoints on Dankclaw — the CIRU v4.4.1
+runtime (frank-large, jcbtc Qwen3.8-Flash-CIRU-STRIX-Orca w4b on the gfx1151
+iGPU, port 7770) and mainline llama.cpp (frank-small, HauhauCS Gemma4-12B QAT
+Q4_K_M with MTP and vision on the RTX 3090, port 7771).
 
 > 2026-08-22: the former `vllmScripts` repository is merged into the
 > serverAppConfigs repository. This knowledge base moved from the old repo's
@@ -21,10 +21,10 @@ graph LR
     subgraph Dankserver[AMD Dankserver - Ubuntu 26.04]
         A[2x Radeon AI PRO R9700
 gfx1201, 32 GiB each]
-        B2[llama.cpp, layer split
+        B2[vllm-radiance 0.9.3, TP=2
 frank-medium, port 7770]
-        C[orcarouter Qwen3.8-27B Q8_0 + DFlash2 Q4_K_M
-ONE process on both cards, 2x163840 ctx, balanced 32:33]
+        C[Qwen3.8-27B MXFP4-awq + DFlash2-FP8
+ONE process on both cards, 262144 ctx, up to 8 seqs]
         A --> B2 --> C
     end
 
@@ -46,6 +46,7 @@ frank-small, port 7771]
     CLI[LLM Clients / API] -->|HTTP :7770| B2
     CLI -->|HTTP :7770| E
     CLI -->|HTTP :7771| G
+```
 
 ## Servers
 
@@ -56,21 +57,25 @@ frank-small, port 7771]
 
 ## Active Deployment
 
-- [[frank-medium-llamacpp-dflash2]] — the ACTIVE frank-medium runbook since
-  2026-09-16 (model swapped 2026-09-19): mainline llama.cpp serving
-  orcarouter/Qwen3.8-27B-Uncensored-GGUF at Q8_0 with the z-lab DFlash2 Q4_K_M
-  drafter on Dankserver's 2x Radeon AI PRO R9700, as ONE layer-split process
-  behind :7770 (tensor parallelism was impossible on the old board's second
-  card; the 2026-09-20 swap cleared that gate but the runtime still ships
-  RCCL-less and the collective is unprobed), balanced 32:33 over two 163,840-token
-  slots
-- [[frank-medium-radiance-mxfp4]] — RETIRED 2026-09-16, one day after it was
-  deployed: the vllm-radiance MXFP4 stack (stilldeadcode/vllm-radiance:0.9.3 +
+- [[frank-medium-radiance-mxfp4]] — the ACTIVE frank-medium runbook since
+  2026-09-20: vllm-radiance MXFP4 (stilldeadcode/vllm-radiance:0.9.3 +
   ggz14/radiance-vllm-mxfp4 patches) serving
-  just1moremodel/Qwen3.8-27B-Uncensored-MXFP4-awq as two single-GPU replicas
-  behind a round-robin proxy; kept as the record of the deployment it
-  succeeded, plus the PCIe-atomics evidence that ruled out TP=2 on the previous
-  board — that gate cleared on 2026-09-20, see [[Dual-R9700-Cooperation]]
+  just1moremodel/Qwen3.8-27B-Uncensored-MXFP4-awq with the z-lab DFlash2-FP8
+  drafter as ONE tensor-parallel process (TP=2) behind :7770 — the three-arm
+  battery that chose it, the auto-sized 943,581-token KV pool, verified
+  capabilities (tools, reasoning, vision), and the record of the 2026-09-16
+  two-replica era
+- [[frank-medium-llamacpp-dflash2]] — RETIRED 2026-09-16 → 2026-09-20: mainline
+  llama.cpp serving orcarouter/Qwen3.8-27B-Uncensored-GGUF at Q8_0 with the
+  DFlash2 Q4_K_M drafter as ONE layer-split process (32:33 over two
+  163,840-token slots); superseded by the radiance TP=2 cutover, and the
+  rollback target. Keeps the batch/ubatch optimum curve and the per-layer split
+  arithmetic
+- [[Dual-R9700-Cooperation]] — whether the two R9700s can serve ONE model: the
+  RCCL/PCIe-atomics wall on the old TUF GAMING B650-E, the 2026-09-20 ProArt
+  B850-Creator x8/x8 swap that cleared it, and the measured three-way verdict
+  (radiance TP=2 95.8 t/s decode vs layer split 45.7 vs llama tensor mode 30.5)
+  that put TP=2 in production
 - [[frank-medium-rocmfpx]] — PRIOR frank-medium deployment (llama.cpp era,
   2026-09-15): charlie12345/ROCmFPX serving
   kingjones777/Qwen3.8-27B-ROCmFPX-Q8_0-AGENT-GGUF; kept as the record of the