[Suggestion] Add collapsible/expandable tag groups (tree-view / accordion UI) to the tag panel

Summary: Requesting a collapsible/expandable grouping structure for tag fields in the tag panel — similar to spoiler, accordion, or tree-view patterns — so related fields can be grouped under clickable headers that toggle visibility.

Current state: All tag fields (Title, Artist, Album, Year, Genre, Composer, etc.) are displayed in a single flat list. With many fields visible, the panel becomes long, scanning is difficult, and visual clutter increases.

Requested feature:

  • Toggle indicator at group header level (leading + / or / icon on a clickable header bar)
  • Clicking the header collapses/expands the fields beneath (optional smooth slide animation)
  • Predefined or user-definable groups such as: Basic Info, Artist/Album, Technical Details, Custom Tags
  • Group state (expanded/collapsed) persisted across sessions
  • Keyboard accessible (Space/Enter to toggle)

Benefit: Faster focus on relevant field groups when working with large tag sets, cleaner visual layout, reduced scrolling and cognitive load.

Just a little correction: objects in the tag panel may be set to a dedicated smaller or larger size so that they may also be displayed side by side and not only as a "flat list".
E.g.:slight_smile:
grafik