debugger

Allows pausing execution at any point with `break` or `break-catch`, entering a debug REPL for real-time inspection, as demonstrated in the usage examples.

Provides direct inspection of all locals in scope via the `locals` command or by referencing variable names, enabling quick state examination without code modification.

Enables overriding expression results by returning non-nil values from the debug REPL, useful for testing and scenario simulation, shown in the 'Return value control' section.

Supports breakpoints in separate threads with `connect` command, allowing interactive debugging of concurrent code, as illustrated in the 'Breakpoints in threads' example.