# Toolbar View

## Description
Tool selection toolbar with contextual inspector panel.

## Acceptance Criteria
- [ ] `ToolbarView` SwiftUI view with tool buttons:
  - Person tool (👤 icon or SF Symbol)
  - Object tool (circle/square icon)
  - Wire tool (line/bolt icon)
  - Brush tool (paintbrush icon)
  - Undo button (arrow.uturn.backward)
  - Redo button (arrow.uturn.forward)
- [ ] Selected tool highlighted visually
- [ ] Undo/redo buttons disabled when not available
- [ ] Contextual inspector panel appears based on active tool:
  - Brush: size slider (1-100px)
  - All tools: feather amount slider (0-20px)
  - Wire tool: mask expansion slider (2-20px, default 6)
  - Optional "Refine edges" toggle
- [ ] Inspector animates in/out smoothly
- [ ] All tools labeled for VoiceOver
- [ ] Brush size adjustable via stepper (accessibility)
- [ ] Dynamic Type support for any text labels
- [ ] UI tests for tool selection and inspector

## Technical Notes
- Use SF Symbols for icons where possible
- Store selected tool in shared state (environment or binding)
- Inspector can be sheet, popover, or inline panel based on device
- Consider compact layout for smaller devices

## Edge Cases
- No image loaded: tools disabled
- Processing in progress: tools disabled, show activity indicator
- Undo stack empty: undo button disabled
- Redo stack empty: redo button disabled
