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.

tests/homepage_pages.bats

@@ -79,7 +79,7 @@ setup() {
 
 @test "the user docs page exists and is reachable from the service pages" {
     [ -f "$BASE/docs.html" ]
-    grep -q '<a href="/docs">docs</a>' "$BASE/index.html"
+    grep -q 'class="foot-btn" href="/docs"' "$BASE/index.html"
     grep -q 'id="models"' "$BASE/docs.html"
     grep -q '<base href="/">' "$BASE/docs.html"
     grep -q 'style.css' "$BASE/docs.html"