Homepage: settle design (grilling Q1-Q5), log open questions Q6-Q43, progress report

- Homepage.md: rewritten to the settled design (single site, user + /admin/
  pages, server-side status.json via a 3-min systemd-timer checker, terminal
  TUI theme). Added mermaid diagrams: site structure, status states, checker
  flow. Recorded the classification (user vs admin; *arr excluded; LLM admin;
  backends status-only) and the documented future shift to client-side probing.
- Homepage Design Grilling.md (new): the decision log — settled Q1-Q5 plus 38
  open questions (Q6-Q43) across 10 categories, each with a recommendation.
- docs/index.md: link the grilling page (satisfies the index-links-every-page test).
- report/homepage-grilling-2026-08-22.html: self-contained terminal-TUI progress
  report (settled decisions, verified stack baseline, overnight processing, work
  threads, the open questions, and how to continue).

Baseline recorded: Dankclaw fully up (10/10); the Dankserver media stack is down
(only Calibre-Web + the LLM are up; no .env on the target) — a separate thread.
No homepage code built yet; the design is pending the operator's answers to Q6-Q43.

docs/index.md

@@ -65,6 +65,7 @@ covers both workloads).
 - [[LAN-DNS]] — name resolution, dnsmasq, router DNS hand-off
 - [[Caddy]] — reverse proxy and TLS
 - [[Homepage]] — password-protected service index
+- [[Homepage Design Grilling]] — homepage decision log and open questions
 - [[Observability]] — Grafana, Prometheus, Loki, Alloy
 - [[Grafana]] — dashboards
 - [[Prometheus]] — metrics collection