- CRITICAL: confirm_delete was never reset when pressing other keys
after 'd'. User could navigate, re-mark, press 'd' again and
snapshots would be deleted without confirmation
- expand_all: only expanded currently visible datasets, not nested
collapsed ones. Now recursively collects from root_entries
- is_last for snapshots: showed wrong tree connector when parent
had both child datasets and snapshots (snapshots are always last)
- auto-refresh message hardcoded "30s" instead of config value
- cancel_input: mode was set to Normal before checking if Search,
so search query was never cleared on Esc
- select_group/unselect_group/invert: use dataset full_name as scope
when cursor is on a dataset (previously used parent_path which
matched nothing)
- is_marked: avoid unnecessary String allocation per comparison
- Selection keys (+/-/*) now work on current scope (parent dataset)
- Add author credits: Florian Schermer, DATAZONE GmbH
- Update help text and README with scope documentation
- Sort toggle (s key): switch between Size/Date/Name sorting
- Date column: shows creation date for datasets and snapshots
- Dry-run mode (D key): preview deletions without actually deleting
- Mouse support: click to select, scroll, right-click to mark
- Config file: ~/.config/zfsdu/config.toml for customizable colors
- Auto-refresh (a key): toggle automatic refresh every 30 seconds
- Help overlay: accessible with ? key (in addition to F1)
- Updated function key bar with new shortcuts
- Updated README with all new features and configuration section
