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/Dankserver/Calibre-Web.md

@@ -8,8 +8,8 @@ Calibre-Web is a web application that browses, reads, and downloads eBooks from
 
 | Item | Value |
 |------|-------|
-| Latest version | 0.6.27-ls397 |
-| Image | `lscr.io/linuxserver/calibre-web:0.6.27-ls397` |
+| Latest version | 0.6.25-ls365 (live); 0.6.27-ls397 upstream |
+| Image | `lscr.io/linuxserver/calibre-web:latest` (live: 0.6.25-ls365) |
 | Base OS | Ubuntu Noble (24.04 LTS, since 2024-12-05) |
 | Port | 8083 (host) → 8083 (container) |
 | Default login | `admin` / `admin123` |