Add a way to group saved entries into “folders” (expandable sections) so users can organize sensitive data more clearly.

Example: a user stores multiple bank cards. Instead of separate flat rows, they want a parent group like “Bank of America” (collapsed by default). When expanded, it shows nested items such as:

• Online banking login/password
• Linked cards (each card as a sub-item)
• Notes or additional related entries

This would make the list easier to work and reduce clutter while keeping related credentials together.