v1.0.0 — First public release

End-to-end encrypted KeePass sync with multi-user sharing.

Highlights:
- Single-user sync (v1): enroll, init, push, pull, sync, daemon
  with fsnotify + polling, versions, restore, recycle-bin
  synthesis. KeePassXC-compatible entry merging.
- Multi-user sharing (v2): X25519 sealed-box wrapping. share,
  unshare, shares, init-shared commands. Per-database ACL via
  database_members table.
- Admin CLI: token-sql, user-create, user-list, user-enrollment,
  user-disable/enable/delete.
- Server: PHP 8.2 + PostgreSQL 14+. setup.php wizard for
  first-time install (EN + DA).
- Crypto: Argon2id master key derivation, HKDF-SHA256 entry-key,
  XChaCha20-Poly1305 entry encryption, X25519 sealed-box sharing.

Server runs on Hetzner shared hosting at
https://deltasync.bjoerck-braun.dk/. See README + website for
documentation.