Add configurable max revisions limit with customer counter and operator override

templates/admin/settings.html

@@ -194,6 +194,18 @@
       <p><strong>Uploads:</strong><br><span class="path">{{ upload_path }}</span></p>
     </div>
 
+    <!-- Settings controls -->
+    <div class="section">
+      <h2>Booth Settings</h2>
+      <form method="POST">
+        <input type="hidden" name="action" value="save_max_revisions">
+        <label for="max_revisions">Maximum customer revisions allowed</label>
+        <input type="number" id="max_revisions" name="max_revisions" min="0" value="{{ current_max_revisions }}">
+        <p class="copy-hint">Set to 0 to disable customer-submitted revisions. Operators can still upload new versions manually.</p>
+        <button type="submit">Save Revision Limit</button>
+      </form>
+    </div>
+
     <!-- System reset -->
     <div class="danger-zone">
       <h2>⚠️ Reset System</h2>