Summary
Add a panel to bulk organize, move, and clean up tabs/bookmarks/spaces—similar to TabXpert’s sessions UI—using Side Space’s existing labels/tags with nesting and collapse.

Problem
Standard bookmarks and one-by-one actions don’t scale for managing large working sets of tabs/spaces.

Proposal
A dedicated Bookmarks/Spaces Manager that supports:

• Multi-select across tabs, groups, and spaces.

• Drag-and-drop between folders/spaces; list reordering.

• Bulk actions: move, merge, delete, rename, archive, export/import.

• Labels & tags: reuse Side Space’s existing labeling/tagging system; enable batch apply/remove and filter by label/tag.

• Nesting & collapse: hierarchical folders/spaces with collapse/expand and hover-peek.

• Session tools: “Save current session,” restore windows + tab order, snapshot history.

• Search & filters: title, domain, label/tag; dedupe identical URLs with preview/undo.

Reference:

https://www.youtube.com/watch?v=oWHjcKg_Z7k