v0.47.4

Fixed

• Modal: add onClose callback to openModal() so promise-based modals (confirmModal, promptModal, selectModal) resolve correctly on Escape and overlay-click without duplicate event listeners.
• Modal: fix _initialFormTimeout leak — timeout is now tracked and cancelled on re-open or close, preventing stale dirty-check snapshots.
• Calendar: replace popup.innerHTML with insertAdjacentHTML in the event popup (project constraint); add truncateDescription() to cap long event descriptions at 500 characters.
• Validation: extend DATETIME_RE to accept ISO 8601 datetimes with milliseconds and timezone offsets; normalise datetime inputs to YYYY-MM-DDTHH:MM before storing.

Changed

• Docker: switch from named Docker volume to host-mounted bind mounts; DATA_DIR (default ./data) and BACKUP_DIR (default ./backups) can be set in .env to control storage locations.
• Startup log: include app version in the server start message.