Description

CalendarHomeSet and ListCalendars coroutines send PROPFIND requests without the Content-Type: text/xml header. Servers that strictly validate this (like Fastmail's Cyrus) return 415 Unsupported Media Type.

Affected files

• src/caldav/coroutines/calendar-home-set.rs — line 24: Request::propfind(config, "/") missing .content_type_xml()
• src/caldav/coroutines/list-calendars.rs — line 21: Request::propfind(config, "").depth(1) missing .content_type_xml()

Note that current-user-principal.rs already correctly includes .content_type_xml().

Steps to reproduce

1. Configure Calendula with Fastmail CalDAV (caldav.home-uri = "https://caldav.fastmail.com/dav/calendars/user/...")
2. Run calendula calendars list
3. Error: 415 Unsupported Media Type: This method requires an XML body

Fix

Add .content_type_xml() to the PROPFIND request builders in both files. PR incoming.