- Removed "Devices" button from control panel - Effects section now always present below each track - Collapsible via chevron in the effects header itself - Click header to expand/collapse the device rack - "+" button in header to add effects (with stopPropagation) - Each track has independent collapse state - Hover effect on header for better UX This matches the typical DAW layout where each track has its own device section that can be individually collapsed/expanded. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>