databse wipe

templates/settings.html

@@ -148,6 +148,17 @@
   </div>
 </form>
 
+<section class="form-section danger-zone">
+  <h2>Danger zone</h2>
+  {% if request.query_params.get("reset") %}
+    <div class="alert alert-success">Sync data cleared — all processed zip and book records have been deleted.</div>
+  {% endif %}
+  <p class="muted small">Deletes all records of processed zips, uploaded books, and sync run history. Your settings are kept. Use this to start fresh after test runs.</p>
+  <form method="post" action="/settings/reset-sync-data" onsubmit="return confirm('Delete all sync data? This cannot be undone.')">
+    <button type="submit" class="btn btn-danger">Delete all sync data</button>
+  </form>
+</section>
+
 <script>
 function toggleAuth(method) {
   document.getElementById("row-key").style.display = method === "key" ? "" : "none";