* docs: add Hosting your own Chat Relay guide
* cli: run headless relay without a terminal
--headless (no -e) now runs via simplexChatCore instead of the terminal
UI, so the relay runs as a systemd service without a TTY (withTerminal
requires one). Drains the event queue logging only errors, and sets
stdout to line-buffering so logs reach the journal.
* docs/chat-relay: debounce service
* Apply suggestions from code review
Co-authored-by: Evgeny <evgeny@poberezkin.com>
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Co-authored-by: Evgeny <evgeny@poberezkin.com>
