Remove the Academy films

The generated videos weren't good enough — pull the films card, its
styles, and the video assets. The service-worker hardening stays: media
paths bypass the cache (Range/206 responses) and only full 200 responses
are cached.

Co-Authored-By: Claude Fable 5 <[email protected]>

public/app.css

@@ -3190,28 +3190,6 @@ select.f {
 	border-color: var(--ember);
 }
 
-.academy-films-grid {
-	display: grid;
-	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
-	gap: 16px;
-}
-.academy-film {
-	margin: 0;
-}
-.academy-film video {
-	display: block;
-	width: 100%;
-	border-radius: var(--radius-lg);
-	border: 1px solid var(--line);
-	background: #1b1614;
-}
-.academy-film figcaption {
-	margin-top: 8px;
-	font-size: 12.5px;
-	color: var(--ink-2);
-	text-align: center;
-}
-
 /* Scene animations — restarted per slide because the SVG is rebuilt. */
 @keyframes ac-draw-kf { from { stroke-dashoffset: 900; } to { stroke-dashoffset: 0; } }
 .ac-draw { stroke-dasharray: 900; animation: ac-draw-kf 2.6s ease-out forwards; }