feat: Mixer Panel display-only with F7 toggle

Add MixerStrip component for display-only track strips (no audio
routing). Mixer panel at bottom with drag resize handle (80-400px).
F7 keyboard shortcut, status bar toggle button, View menu item.
onUpdateTrack handles mute/solo/volume changes directly on tracks.
This commit is contained in:
2026-07-29 09:49:47 +07:00
parent 33cf804c88
commit 2187440681
3 changed files with 151 additions and 9 deletions
File diff suppressed because one or more lines are too long