Fix pause/play audio muting + tidy share page UX

- Fix SynthesisEngine to not cleanup layers on stop, preventing
  audio from going silent after pause/resume
- Remove "Reimagined as classic game-console music" line
- Remove procedural playback meta block
- Move "Generate your own" CTA inside player card
- Update footer with Birdmania credit and Twitter link

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

play.html

@@ -126,12 +126,6 @@
         color: var(--gb-light);
       }
 
-      /* Transform description */
-      .transform-line {
-        margin: 0 0 calc(var(--spacing-unit) * 3) 0;
-        color: var(--gb-light);
-        font-size: 8px;
-      }
 
       /* Buttons */
       button {
@@ -272,29 +266,20 @@
         width: 0%;
       }
 
-      /* Meta block */
-      .meta-block {
+      /* CTA link (inside card) */
+      .cta-link-inline {
         margin-top: calc(var(--spacing-unit) * 2);
         padding-top: calc(var(--spacing-unit) * 2);
         border-top: 2px solid var(--gb-darkest);
-        font-size: 8px;
-        color: var(--gb-light);
-        line-height: 2.2;
-      }
-
-      /* CTA link */
-      .cta-link {
-        display: block;
-        margin-top: calc(var(--spacing-unit) * 3);
         text-align: center;
       }
 
-      .cta-link a {
+      .cta-link-inline a {
         display: inline-block;
         color: var(--gb-lightest);
         text-decoration: none;
         font-size: 10px;
-        padding: 12px 16px;
+        padding: 12px 20px;
         border: var(--pixel-border) solid var(--gb-light);
         background: var(--gb-dark);
         box-shadow:
@@ -302,7 +287,7 @@
           inset 4px 4px 0 var(--gb-light);
       }
 
-      .cta-link a:hover {
+      .cta-link-inline a:hover {
         background: var(--gb-light);
         color: var(--gb-darkest);
         box-shadow:
@@ -335,11 +320,6 @@
         <h2 id="songTitle" class="song-title">Loading...</h2>
         <div id="songArtist" class="song-artist"></div>
 
-        <!-- Transformation Description -->
-        <p id="transformLine" class="transform-line">
-          Reimagined as classic game-console music
-        </p>
-
         <!-- Play/Pause Control -->
         <div class="play-container">
           <button id="playToggleBtn" class="primary" disabled>
@@ -359,20 +339,14 @@
           </div>
         </div>
 
-        <!-- Metadata -->
-        <div class="meta-block" id="metaBlock">
-          Procedural playback from MIDI structure.<br />
-          Rendered using the Wario Synthesis Engine.
+        <!-- CTA -->
+        <div class="cta-link-inline">
+          <a id="generateOwn" href="/">Generate your own</a>
         </div>
       </div>
 
-      <!-- CTA -->
-      <div class="cta-link">
-        <a id="generateOwn" href="/">Generate your own</a>
-      </div>
-
       <div class="footer">
-        <a href="/">WARIO SYNTH</a> — Turn any song into retro game console music
+        Wario's Synthesis Engine — created by <a href="https://x.com/b1rdmania" target="_blank" rel="noopener">Birdmania</a>
       </div>
     </div>