v0.2.30

migrations/README.md

@@ -43,7 +43,18 @@ V054 adds three appearance columns to `display_preferences` and calendar reminde
 
 Fresh installations already contain the columns in `schema.sql`. Existing V053 tenants execute `V054__theme_schedule_account_color_and_reminders.sql`.
 
-The next migration number is **V055**.
+## V055 — CalDAV / CardDAV
+
+V055 prepares the calendar and contacts tables for the optional CalDAV/CardDAV server (`[dav]`):
+
+- `calendar_events.dav_name` / `contacts.dav_name` (nullable) — resource name chosen by the DAV client (e.g. `4f9e….ics`); rows created in the webmail keep `NULL` and are served as `<id>.ics` / `<id>.vcf`;
+- `calendar_events.dav_data` / `contacts.dav_data` (nullable) — the iCalendar object / vCard exactly as uploaded, so time zones, recurrence exceptions, alarms and vendor properties survive; webmail edits are patched into it;
+- `idx_contacts_email` becomes a regular (non-unique) index, because an address book may contain several cards with the same address (and cards without any address);
+- new indexes `idx_calendar_events_dav_name` and `idx_contacts_dav_name`.
+
+Fresh installations already contain the columns in `schema.sql`. Existing V054 tenants execute `V055__caldav_carddav.sql`.
+
+The next migration number is **V056**.
 
 ## Migration rules