fix time and ignore duplciate scans in score keeping

public/js/timeago.js

@@ -18,7 +18,13 @@
 
   function updateTimes() {
     document.querySelectorAll('time[datetime]').forEach(function (el) {
-      var d = new Date(el.getAttribute('datetime'));
+      var raw = el.getAttribute('datetime');
+      // SQLite stores UTC dates without a 'Z' suffix — add it so the browser
+      // parses them as UTC instead of local time
+      if (raw && !/[Z+\-]\d{0,4}$/i.test(raw)) {
+        raw = raw.replace(' ', 'T') + 'Z';
+      }
+      var d = new Date(raw);
       if (!isNaN(d)) {
         el.textContent = timeAgo(d);
         el.title = d.toLocaleString();

src/models/index.js

@@ -352,10 +352,8 @@ const Scans = {
     const alreadyScanned = this.hasUserScanned(packageId, userId);
 
     if (alreadyScanned) {
-      // No points, but update last_scanned_by so they can edit the hint
+      // No points — don't store 0-point scans, just update last_scanned_by
       db.prepare('UPDATE packages SET last_scanned_by = ? WHERE id = ?').run(userId, packageId);
-      // Record the scan with 0 points
-      db.prepare('INSERT INTO scans (package_id, user_id, points_awarded) VALUES (?, ?, 0)').run(packageId, userId);
       return { points: 0, alreadyScanned: true, isFirst: false };
     }