v0.10.9

fix: prevent duplicate MIDI notes on slice creation and add RESEQ action

- createSlice() now uses nextMidiNote() (highest existing note + 1) instead
  of rootNote + idx, preventing duplicates after splits or deletions
- CmdSplitSlice and CmdTransientChop use nextMidiNote() for baseNote
  calculation, fixing collisions when there are gaps from deleted slices
- Add CmdRepackMidi command with repackMidiNotes(sortByPosition) that
  reassigns all MIDI notes sequentially from rootNote, with optional
  sort-by-audio-position mode
- Add RESEQ button in ActionPanel with themed inline overlay panel
  offering BY POSITION and AS CREATED modes

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>