- rcon.ts: Node net.Socket transport speaking AtomCMS's exact protocol (raw JSON {"key","data"} over rcon_ip:rcon_port, fire-and-forget) with a bounded timeout + backoff retry; typed commands matching RconService EXACTLY (sendgift `itemid`, disconnect `username`, no-data => data:null, givepoints numeric `type`, forwarduser, setmotto/setrank/alertuser, give*). Injectable transport keeps command shapes unit-testable. - send-currency.ts: mirrors the SendCurrency action — RCON deliver, else DB fallback (credits -> users.credits; duckets/diamonds/points -> users_currency by type 0/5/101). - env: RCON_HOST/PORT/TIMEOUT/RETRIES. vitest: SKIP_ENV_VALIDATION for unit tests. Verified: tsc exit 0, vitest 39/39, next build exit 0. Live TCP test deferred (needs a running emulator).