Integrate MusicGPT API generation into booth-musicgpt v0.7.0

templates/admin/settings.html

@@ -339,6 +339,28 @@
         </form>
       </div>
 
+      <!-- MusicGPT integration -->
+      <div class="section">
+        <h2>MusicGPT Integration</h2>
+        <p class="copy-hint">API key is set via the <code>MUSICGPT_API_KEY</code> environment variable in Docker.</p>
+        <p><strong>API key configured:</strong> {{ '✅ Yes' if musicgpt_api_key_set else '❌ No' }}</p>
+        <p><strong>Webhook URL:</strong> <span class="path">{{ musicgpt_webhook_url }}</span></p>
+        <p class="copy-hint">Register this URL in your MusicGPT account webhook settings so completed songs POST back here.</p>
+
+        <hr style="border:none;border-top:1px solid var(--border);margin:1.5rem 0;">
+
+        <h3>Album Cover Delivery</h3>
+        <p class="copy-hint">When enabled, the generated album cover is attached to the delivery email. It is always shown on this admin page.</p>
+        <form method="POST">
+          <input type="hidden" name="action" value="save_album_cover">
+          <label for="deliver_album_cover" style="display:flex;align-items:center;gap:.5rem;cursor:pointer;">
+            <input type="checkbox" id="deliver_album_cover" name="deliver_album_cover" value="1" {% if deliver_album_cover %}checked{% endif %} style="width:auto;margin:0">
+            Attach album cover to delivery email
+          </label>
+          <button type="submit">Save Album Cover Setting</button>
+        </form>
+      </div>
+
       <!-- Email / SMTP configuration -->
       <div class="section">
         <h2>Email (SMTP) Settings</h2>