Module progress 

Terminal progress bars and spinners for test feedback.

This module provides user interface components for test progress:

• Tracker — Progress bar with real-time speed display and sparkline
• Spinners for individual test phases (server discovery, ping, etc.)
• Colorized finish messages with test results
• Grade reveal animation for intentional friction

Structs

Tracker

A progress tracker for download/upload tests. Updates a single shared progress bar with live speed, sparkline, and trend.

Functions

create_spinner

finish_ok

reveal_grade

reveal_pause

reveal_scan_complete