feat(homepage): Audiobookshelf's own mark, and the voice endpoint in the model block

Audiobookshelf carried the improvised "AB" hex monogram — the fallback for
apps with no icon. Simple Icons carries its brand mark, so the card now
uses /img/apps/audiobookshelf.svg the way Plex and Jellyfin use theirs; the
monogram went to .AGENTTRASH.

frank-tts (Qwen3-TTS 1.7 B base talker on the gfx1151 iGPU) was an
admin-only status tile, so the household read about five cloned voices in
/docs and saw no sign of the door that speaks them. It is now a Model
Information card on the user page beside the three chat models, carrying
the ask-Frank permission note and a privacy note about cloned voices.

miCard grew the shape that requires: art falls back to the card's own `art`
when a card has no StarCraft `unit`, the accent falls back to `.mi-tool`,
and a `tagline` with no `sfx` renders as text instead of a play button that
plays nothing. No audio asset ships with the card on purpose: every pack on
that endpoint is a replica of a real person's voice, so a sample clip would
put a synthetic person's voice in the repo and on the page.

Seams: the model-card contract splits unit cards (equivalence, supervision,
playable voice line) from tool cards (permission note), and the voice
stack's homepage seam now pins category=user with the reason.

shared/homepage/style.css

@@ -263,6 +263,7 @@ html[data-bare="1"] .top { border-image: none; }
 .mi-zealot  { --mi: #4fb4ff; }  /* Zealot: Khai's blue blades   */
 .mi-archon  { --mi: #a8ecff; }  /* Archon: pure psychic light   */
 .mi-dragoon { --mi: #5fe0d0; }  /* Dragoon: phase-crystal teal */
+.mi-tool   { --mi: #ffc86b; }  /* frank-tts: amber — a tool, not a unit */
 .mi-top { display: flex; align-items: center; gap: 10px; }
 .mi-art {
   width: 56px;
@@ -294,6 +295,7 @@ html[data-bare="1"] .top { border-image: none; }
 .mi-voice:hover { text-shadow: 0 0 8px var(--mi); }
 .mi-voice.mi-speaking { animation: mi-pulse 0.7s ease-in-out infinite; }
 @keyframes mi-pulse { 50% { text-shadow: 0 0 12px var(--mi); } }
+.mi-tag { color: var(--mi); margin: 4px 0; }
 .mi-equiv { color: var(--head); font-style: italic; margin: 4px 0; }
 .mi-spec { color: var(--fg); margin: 4px 0; }
 .mi-inputs { color: var(--dim); }