* feat: add session quick wins (#51-#55)
- Session timer showing elapsed time in header (#51)
- Tab keyboard shortcut to focus notes textarea (#52)
- Repeat Last Session button on tree library page (#53)
- Auto-recovery banner for incomplete sessions (#54)
- Copy individual step to clipboard on session detail (#55)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: add missing delete button to table and list tree views
The onDeleteTree prop was accepted but never used in TreeTableView and
TreeListView. Now both views show a trash icon (permission-gated) matching
the existing grid view behavior.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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