Type Alias LogCallbackFn 

pub type LogCallbackFn = extern "C" fn(level: c_int, message: *const c_char);

Logging callback function type

Called by Go’s slog handler to forward log messages to Rust.

Arguments

• level - Log level (0=trace, 1=debug, 2=info, 3=warn, 4=error)
• message - Log message (null-terminated C string)