[nick2781]

Server construction checks did not prove that the actual launcher could load Utility, Bus, Net and Login together, accept a connection and stop normally.

Add a permanent native process test that stages private TOML manifests, runs the real launcher and plugin libraries on an ephemeral loopback port, observes a connection, requests SIGTERM, completes the TCP half-close, and verifies exit 0 plus listener release. Wire it into the existing server checks on supported Unix platforms and document the exact boundary in both languages.

Validation:

• Actual launcher composition, existing Net DSO acceptance and all three typed business examples passed with the exact CI-pinned arknet source.
• 157 CI policy tests, clang-format 18 and Nimbus checks passed; affected canonical article bodies and Markdown exports were inspected.
• Owned child cleanup and an early-exit negative control passed.

The first raw-peer test waited for process exit before replying to the server FIN; correcting that test ordering passed on unchanged transport code. No production timeout or network implementation changed. Windows retains its existing construction checks. This verifies composition and cooperative shutdown, not account login, game routing, Godot integration or capacity.