internal/

Package flight collapses concurrent same-key calls into one execution.

Package jsonrpc is the JSON-RPC 2.0 client shared by the harness drivers that speak it (Codex app-server, ACP agents).

Package proc spawns and reaps one child process with explicit pipes, group control, and a single Wait.

Package wire is the session plumbing shared by every harness driver: it owns the child process, the NDJSON framing, the event fan-out, and the graceful close sequence.