v0.47.3

Changed

• Documentation: SPEC.md updated to reflect v0.45–v0.47 changes — CardDAV Accounts and CardDAV Addressbook Selection tables added; Contacts table expanded with multi-value fields and CardDAV columns; new contact_phones, contact_emails, contact_addresses sub-tables documented; Birthdays table reflects configurable reminder offset columns; External Calendars table notes apple→caldav migration; Tasks module documents bulk actions; Contacts module documents CardDAV multi-account sync; Birthdays module reflects flexible reminder offsets; Settings module updated for Synchronization tab, module toggles, scheduled backups, and CardDAV UI.
• README: Birthdays feature description updated to reflect customizable reminder offsets; Backup feature description updated to mention automatic scheduled backups.

Removed

• Repository: archived implemented cleanup plan (docs/designs/2026-05-04-repo-cleanup-design.md → docs/archive/designs/); removed settings sidebar prototype HTML (docs/designs/2026-05-04-settings-sidebar-demo.html).