Goal: Add progress bars to all time-consuming operations

Deliverables:

• Shared UI component library (progress bars, spinners, multi-task progress)
• Apply to all related commands (build, record, sync, etc.)

Technical Points:

• Use indicatif crate
• Encapsulate common progress bar patterns

Acceptance Criteria:

• All operations > 2 seconds have visual feedback
• Unified style and behavior

Compatibility: Improve existing functionality

Dependencies: indicatif crate