pub fn run() -> ExitCodeAvailable on crate feature
cli only.Expand description
Binary entry point shared by src/main.rs and src/bin/ts.rs.
Resolves CompatibilityMode once at startup from CLI flag → env var →
argv[0] basename per FR-021. Dispatches to the appropriate pipeline
based on the resolved flags (relative mode, elapsed modes, absolute
default). In Strict mode, Rusty-only flags are rejected with a
moreutils-style diagnostic.