Doc audit: fix all broken links + correct stale facts across the KB

Fanned out 5 read-only doc-auditor subagents (one per service group) that
fact-checked the knowledge base against the live system + repo config,
researched official setup docs online, and verified progress. Applied:
- All 34 broken links fixed (real pages / external URLs / correct relative
  paths); 0 broken links remain. No .AGENTTRASH links (the 4 mentions are
  accurate descriptive text, not links).
- Fact-check fixes: Readarr retired (May 2026), Radarr v4->v6, Calibre
  9.2.1 live, Calibre-Web 0.6.25 live, Copyparty v1.20.21, LLM index
  ncmoe 38 + 786432 ctx, frank-default-small active (not frank-pp-worker),
  Hermes/SearXNG/Grafana hostnames, Loki/Alloy local images, Observability
  diagram (Promtail->Alloy), VLLM retired note, DFlash status, benchmark
  live-drift notes, Homepage test count 116.

docs/LLM/frank-default-small-benchmark.md

@@ -105,6 +105,8 @@ service runs 700416 cells (13,680 MiB).
 
 ## Chosen State
 
+> **Live drift (2026-08-22 audit):** the deployed `frank-default-small` now runs `--n-cpu-moe 38`, `--batch-size 4096`, `--ubatch-size 2048` (ncmoe raised from 36 for stability; batch lowered). The values below are the original benchmark recommendation.
+
 Prefill speed is the priority, so the state keeps the top prefill tier and
 moves one expert layer to CPU for stability: