The cold-start crash-loop wasn't mavweb-specific — mavpoll and mavcaldav also
ipc.Dial + exit on failure, so they crash-looped until core booted too. Moved
the retry into ipc.DialWait (capped backoff, bounded) and switched mavweb,
mavpoll, mavcaldav to it. mavweb's local dialCoreWithRetry is gone.
Test: server appears after DialWait starts → it waits and connects.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Polls Radicale for today's events, writes calendar_busy and calendar_event
facts through CoreAPI. Only writes on value change (same append-only
discipline as mavpoll).
Usage: mavcaldav -socket <core> -url <radicale> -user <u> -pass <p>
Flags: -interval (default 5m), -timeout (default 10s).
Fires immediately on start, then on interval.
iCal parser supports UTC and local DTSTART/DTEND, skips all-day events.
kami