Add Ready-screen settings summary

[PurpleSentinel]

Summary

• replace the sparse Ready screen with a compact settings summary
• show saved track and rest durations before every session
• show the effective Launch Mode state as OFF, the active sensitivity, or unavailable
• retain a clear swipe-down start instruction
• update deployment and user documentation for the new support module and screen behavior

Why

The previous Ready screen showed only the track duration. Drivers could not confirm the rest duration or whether Launch Mode was active without entering each configuration screen.

Impact

All settings relevant to the next track/rest cycle are now visible at a glance. An IMU failure is also reflected as Launch unavailable, while normal swipe-down timing remains available.

Validation

• python -m unittest discover -s tests -v - 66 tests passed
• tests cover active, disabled, and unavailable Launch Mode states
• geometry coverage confirms the widest supported values fit the circular display
• rendered on the connected Waveshare RP2040-Touch-LCD-1.28 using the production framebuffer and font
• captured and visually inspected the exact 115,200-byte device framebuffer