PING watchdog sends PING after configurable silence interval and
disconnects on timeout, detecting stale connections that TCP alone
misses. IRCv3 server-time capability is requested on every connection;
timestamps are injected on dispatch and backlog replay for clients
that support message tags. Push notifications via ntfy or generic
webhook fire on highlights and PMs when no clients are attached,
with configurable cooldown and optional SOCKS5 routing.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
