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/Dankclaw/SearXNG.md

@@ -2,7 +2,7 @@
 
 SearXNG is a privacy-respecting metasearch engine. It aggregates results from many upstream search engines into one result set and serves both an HTML UI and a JSON API for agents.
 
-**Host:** Dankclaw — **Hostname:** `search.dankclaw.local` — **Docs:** https://docs.searxng.org
+**Host:** Dankclaw — **Hostname:** `search.franksdank.cloud` (Caddy) — **Docs:** https://docs.searxng.org
 
 ## Facts (from research, primary source)
 
@@ -24,7 +24,7 @@ ContainerName=searxng
 Network=gluetun.container
 ```
 
-Port publishing happens on the **gluetun** unit, not on searxng. See [[Gluetun]] and the knowledge base page [[VPN Routing for SearXNG]] (KB Pattern 2 is the one used here).
+Port publishing happens on the **gluetun** unit, not on searxng. See [[Gluetun]] (KB Pattern 2 is the one used here).
 
 ## Boot Persistence (Quadlet)
 
@@ -47,7 +47,7 @@ Deploy with `scripts/deploy-searxng-quadlet.sh dankclaw`. It copies the units, d
 use_default_settings: true
 server:
   secret_key: "${SEARXNG_SECRET}"   # from .env
-  base_url: "http://search.dankclaw.local/"
+  base_url: "${SEARXNG_BASE_URL}"  # resolves to http://192.168.0.143:8081/
   limiter: true
   method: "POST"
 
@@ -106,4 +106,4 @@ Reach SearXNG through Caddy (`search.dankclaw.local`) for browser use. A local s
 
 - [[Dankclaw Stack]]
 - [[Gluetun]] — the VPN container
-- Knowledge base: [[VPN Routing for SearXNG]], [[SearXNG Tuning]], [[Agentic Search Best Practices]]
+- Knowledge base: [[Gluetun]], [[SearXNG]], [[Hermes]]