Layouts and layout presets

QOwnNotes now uses clearer names for interface arrangements.

The old Workspaces feature is now called Layouts.

The old Layout settings page is now called Layout presets.

This keeps the distinction simpler:

• Layouts are your saved interface arrangements
• Layout presets are the built-in starting points you can apply to create a layout

Existing saved setups are migrated automatically, including the current layout, the previous layout, layout names, and layout selector shortcuts.

For scripting, the new hook name is layoutSwitchedHook(oldUuid, newUuid). Older scripts using workspaceSwitchedHook(oldUuid, newUuid) will still work for now, but they are deprecated and should be updated.

If you want to follow the discussion behind the rename, please take a look at GitHub issue #3564.