Module daemon 

Persistent bash coprocess daemon for reef persist full.

Architecture:

• start() spawns a detached daemon process (reef daemon _serve).
• exec() connects to the socket, sends a command, and receives the output + env diff + exit code.
• stop() sends a shutdown signal via the socket.
• status() checks if the daemon is alive by pinging the socket.

The daemon runs single-threaded — one command at a time, matching interactive shell semantics. Zero external dependencies.

Functions

exec

Send a command to the daemon and print results. Returns the command’s exit code.

serve

Main daemon loop: spawn bash, accept connections, proxy commands. Called by reef daemon _serve (internal, not user-facing).

start

Start the daemon: spawn a detached reef daemon _serve process.

status

Check if the daemon is running and responsive.

stop

Tell the daemon to shut down.