Tags: enzv/rc

build: abstract terminal process group management to fix compilation …

…on AIX and Solaris

This change introduces graceful degradation for platforms with diverging OS TTY APIs (AIX, Solaris, Illumos) without impacting mainstream POSIX systems (Linux, Darwin, BSDs). By extracting job control into exec_posix.go and exec_stub.go, we maintain clean code in exec.go and ensure builds succeed across all targets.

ci: split workflow steps and add path filters to avoid redundant runs