feat: Logs zeigen jetzt auch Geraetetyp/Browser bei oeffentlichen Link-Besuchen

backend/src/db.js

@@ -673,5 +673,10 @@ db.exec(`
     created_at DATETIME
   )
 `);
+{
+  const cols = db.pragma('table_info(public_access_log)').map(c => c.name);
+  if (!cols.includes('device'))
+    db.exec("ALTER TABLE public_access_log ADD COLUMN device TEXT NOT NULL DEFAULT ''");
+}
 
 module.exports = db;