New wiki/Collections.md in the style of the other addon pages (lists, status,
categories, adding/bulk-adding places, place detail, filters + bulk actions,
fusion sharing with member roles, dashboard widget). Add it to the Addons
overview table + the sidebar navigation.
Adds the complete TREK documentation wiki covering installation,
trip planning, admin panel, MCP/AI integration, addons, and operations.
Also fixes encrypt-at-rest gaps: mapbox_access_token, Synology
credentials, per-user webhook/ntfy tokens, and photo passphrases
are now rotated by migrate-encryption.ts and stored encrypted via
settingsService.
Maurice