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/academy.html

@@ -64,48 +64,6 @@
         <main class="page-content">
           <div id="academy-menu"></div>
 
-          <section class="panel-card" id="academy-films">
-            <div class="panel-head">
-              <h2>Films — the physics in motion</h2>
-            </div>
-            <div class="panel-body">
-              <p class="muted" style="margin-top: 0">
-                Two short macro films of what the lessons teach — every shot
-                generated on the local roaster's GPU.
-              </p>
-              <div class="academy-films-grid">
-                <figure class="academy-film">
-                  <video
-                    src="/academy-video/roast-physics.mp4?v=__ASSET_VERSION__"
-                    poster="/academy-video/roast-physics-poster.jpg?v=__ASSET_VERSION__"
-                    controls
-                    muted
-                    loop
-                    playsinline
-                    preload="metadata"
-                  ></video>
-                  <figcaption>
-                    The roast — charge · drying · Maillard · first crack · drop
-                  </figcaption>
-                </figure>
-                <figure class="academy-film">
-                  <video
-                    src="/academy-video/brew-physics.mp4?v=__ASSET_VERSION__"
-                    poster="/academy-video/brew-physics-poster.jpg?v=__ASSET_VERSION__"
-                    controls
-                    muted
-                    loop
-                    playsinline
-                    preload="metadata"
-                  ></video>
-                  <figcaption>
-                    The brew — grind · bloom · immersion · espresso
-                  </figcaption>
-                </figure>
-              </div>
-            </div>
-          </section>
-
           <section class="panel-card hidden" id="academy-player">
             <div class="panel-head">
               <div>