Sebastian Krüger 03a7e2e485 feat: implement Phase 9.1 - Automation lanes UI ...

Added comprehensive automation lane UI with Ableton-style design:

**Automation Components:**
- AutomationLane: Canvas-based rendering with grid lines, curves, and points
- AutomationHeader: Parameter name, mode selector, value display
- AutomationPoint: Interactive draggable points with hover states

**Automation Utilities:**
- createAutomationLane/Point: Factory functions
- evaluateAutomationLinear: Interpolation between points
- formatAutomationValue: Display formatting with unit support
- addAutomationPoint/updateAutomationPoint/removeAutomationPoint

**Track Integration:**
- Added "A" toggle button in track control panel
- Automation lanes render below waveform
- Default lanes for Volume (orange) and Pan (green)
- Support for add/edit/delete automation points
- Click to add, drag to move, double-click to delete

**Visual Design:**
- Dark background with horizontal grid lines
- Colored curves with semi-transparent fill (20% opacity)
- 4-6px automation points, 8px on hover
- Mode indicators (Read/Write/Touch/Latch) with colors
- Value labels and current value display

Ready for playback integration in next step.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

2025-11-18 18:34:35 +01:00

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