Attribute Macro process_init 

#[process_init]

Sibling to fs_init for the process module: starts the dtact-process blocking-thread pool before the wrapped main/entry point runs. Same five knobs for call-site parity with fs_init/ dtact_io_init; only workers is actually consulted by dtact_util::process::init_process today (see that function’s doc for why the ring/buffer-pool knobs don’t apply to a thread-pool- bridged backend).