homepage: app-card art, zealot-first order, common uncensored warning, admin identity gate

- Every app card carries hex-clipped art: 19 amber-tinted brand marks
  from the Simple Icons CDN plus 19 improvised monogram SVGs, wired via
  a per-service "art" field; homepage_config.bats pins art presence for
  all 32 apps.
- Model cards render zealot -> dragoon -> archon (registry order pinned
  in the seam).
- Dragoon and zealot share one common uncensored legal warning (adult
  content, harmful/hateful/illegal descriptions, sensitive offensive
  cybersecurity topics, severe legal risk, "don't ruin this server for
  everybody"), hover label on card and docs.
- Archon gets a bordered red permission callout: ask Frank before use.
- SearXNG obfuscation-not-anonymity note moved to a card-level hover
  warning (.svc-warn) and a docs hover note.
- Gitea: self-service signup flow; no need to ask Frank.
- Footer docs/admin/account-settings become glowing bordered buttons;
  the admin button is shown only to homepage-admins members via a new
  Caddy /whoami endpoint echoing the outpost-injected X-Authentik-*
  headers (spoof-proof; the /admin* 403 stays the real gate). e2e pins
  both sides.
- Docs naming swept: Protoss names primary, bracketed api ids, explicit
  note that a future switchover renames the ids themselves.

shared/homepage/img/apps/radarr.svg

@@ -0,0 +1 @@
+<svg fill="#ffb000" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>radarr</title><path d="M5.274 0C3.189.039 1.19 1.547 1.19 4.705l.184 14.518c0 1.47 1.103 2.205 2.573 2.021L3.764 3.786c0-1.654.919-1.838 2.022-1.103l14.7 8.27c1.103.734 1.655 1.47 1.838 2.756.92-1.654.552-4.043-1.286-5.33L7.991.846A4.559 4.559 0 0 0 5.274.001zm1.982 6.91-.184 10.107 9.004-5.146Zm13.598 6.064-15.068 8.82c-.92.552-2.022.736-3.124.368.918 1.47 3.307 2.389 5.145 1.47l12.68-7.35c1.102-.736 1.286-2.022.367-3.308z"/></svg>