feat: store bookmark last-opened timestamps only in DB

backend/server.js

@@ -28,6 +28,9 @@ const MIN_TEXT_HASH_LENGTH = 120;
 const MIN_SIMILAR_TEXT_LENGTH = 60;
 const MAX_BOOKMARK_LABEL_LENGTH = 120;
 const MAX_BOOKMARK_QUERY_LENGTH = 200;
+const DEFAULT_BOOKMARK_ID = 'default-search';
+const DEFAULT_BOOKMARK_LABEL = 'Gewinnspiel / gewinnen / verlosen';
+const DEFAULT_BOOKMARK_QUERY = '';
 const DAILY_BOOKMARK_TITLE_MAX_LENGTH = 160;
 const DAILY_BOOKMARK_URL_MAX_LENGTH = 800;
 const DAILY_BOOKMARK_NOTES_MAX_LENGTH = 800;
@@ -917,18 +920,26 @@ function normalizeBookmarkLabel(value, fallback = '') {
   return label;
 }
 
+function isDefaultBookmarkQuery(value) {
+  return typeof value === 'string' && !value.trim();
+}
+
 function serializeBookmark(row) {
   if (!row) {
     return null;
   }
 
+  const isDefault = isDefaultBookmarkQuery(row.query);
+
   return {
     id: row.id,
     label: row.label,
     query: row.query,
     created_at: sqliteTimestampToUTC(row.created_at),
     updated_at: sqliteTimestampToUTC(row.updated_at),
-    last_clicked_at: sqliteTimestampToUTC(row.last_clicked_at)
+    last_clicked_at: sqliteTimestampToUTC(row.last_clicked_at),
+    is_default: isDefault,
+    deletable: !isDefault
   };
 }
 
@@ -1657,6 +1668,11 @@ const insertBookmarkStmt = db.prepare(`
   VALUES (?, ?, ?)
 `);
 
+const ensureDefaultBookmarkStmt = db.prepare(`
+  INSERT OR IGNORE INTO bookmarks (id, label, query)
+  VALUES (?, ?, ?)
+`);
+
 const deleteBookmarkStmt = db.prepare(`
   DELETE FROM bookmarks
   WHERE id = ?
@@ -1669,6 +1685,8 @@ const updateBookmarkLastClickedStmt = db.prepare(`
   WHERE id = ?
 `);
 
+ensureDefaultBookmarkStmt.run(DEFAULT_BOOKMARK_ID, DEFAULT_BOOKMARK_LABEL, DEFAULT_BOOKMARK_QUERY);
+
 db.exec(`
   CREATE TABLE IF NOT EXISTS daily_bookmarks (
     id TEXT PRIMARY KEY,
@@ -4555,6 +4573,14 @@ app.delete('/api/bookmarks/:bookmarkId', (req, res) => {
   }
 
   try {
+    const existing = getBookmarkByIdStmt.get(bookmarkId);
+    if (!existing) {
+      return res.status(404).json({ error: 'Bookmark nicht gefunden' });
+    }
+    if (isDefaultBookmarkQuery(existing.query)) {
+      return res.status(403).json({ error: 'Standard-Bookmark kann nicht gelöscht werden' });
+    }
+
     const result = deleteBookmarkStmt.run(bookmarkId);
     if (!result.changes) {
       return res.status(404).json({ error: 'Bookmark nicht gefunden' });