Module interrupt 

Interrupt signal handling for graceful checkpoint save.

This module provides signal handling for the Ralph pipeline, ensuring clean shutdown when the user interrupts with Ctrl+C.

When an interrupt is received, the handler will:

1. Save a checkpoint with the Interrupted phase
2. Clean up temporary files
3. Exit gracefully

Structs

InterruptContext

Context needed to save a checkpoint when interrupted.

Functions

clear_interrupt_context

Clear the global interrupt context.

set_interrupt_context

Set the global interrupt context.

setup_interrupt_handler

Set up the interrupt handler for graceful shutdown with checkpoint saving.