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/mariadb.svg

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+<svg fill="#ffb000" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>MariaDB</title><path d="M23.157 4.412c-.676.284-.79.31-1.673.372-.65.045-.757.057-1.212.209-.75.246-1.395.75-2.02 1.59-.296.398-1.249 1.913-1.249 1.988 0 .057-.65.998-.915 1.32-.574.713-1.08 1.079-2.14 1.59-.77.36-1.224.524-4.102 1.477-1.073.353-2.133.738-2.367.864-.852.449-1.515 1.036-2.203 1.938-1.003 1.32-.972 1.313-3.042.947a12.264 12.264 0 00-.675-.063c-.644-.05-1.023.044-1.332.334L0 17.193l.177.088c.094.05.353.234.561.398.215.17.461.347.55.391.088.044.17.088.183.101.012.013-.089.17-.228.353-.435.581-.593.871-.574 1.048.019.164.032.17.43.17.517-.006.826-.056 1.261-.208.65-.233 2.058-.94 2.784-1.4.776-.5 1.717-.998 1.956-1.042.082-.02.354-.07.594-.114.58-.107 1.464-.095 2.587.05.108.013.373.045.6.064.227.025.43.057.454.076.026.012.474.037.998.056.934.026 1.104.007 1.3-.189.126-.133.385-.631.498-.985.209-.643.417-.921.366-.492-.113.966-.322 1.692-.713 2.411-.259.499-.663 1.092-.934 1.395-.322.347-.315.36.088.315.619-.063 1.471-.397 2.096-.82.827-.562 1.647-1.691 2.19-3.03.107-.27.22-.22.183.083-.013.094-.038.315-.057.498l-.031.328.353-.202c.833-.48 1.414-1.262 2.127-2.884.227-.518.877-2.922 1.073-3.976a9.64 9.64 0 01.271-1.042c.127-.429.196-.555.48-.858.183-.19.625-.555.978-.808.72-.505.953-.75 1.187-1.205.208-.417.284-1.13.132-1.357-.132-.202-.284-.196-.763.006Z"/></svg>