v1.7.0

Added

• LAN synchronization with HomeServerHub (offline-first). ComponentHub can now
  keep the same data across several machines through a lightweight local-network
  hub, without any cloud. The local database stays sovereign: the app always
  works on its local copy; the hub is only used to reconcile copies when reachable.
  Configure the hub address in Settings → Synchronization, then:
  • automatic sync at startup if the hub is reachable (short, non-blocking probe
    with on-screen feedback so it never feels frozen);
  • on-demand button ("Synchroniser maintenant");
  • sync proposed on quit — both automatic triggers are toggleable;
  • an explicit "local only" mode that disables all synchronization.
    See docs/fr/SYNCHRONISATION.md (FR).
• Last-sync metrics in Settings (date + items received/sent).
• Configuration backup/restore: the full .tar backup now includes the
  configuration; a new "Configuration only" backup/restore exports just the
  settings (hub address, options, appearance) as JSON, to replicate them on
  another machine.

Changed

• Permanent identity is now a UUID for every entity (was an auto-increment
  integer). Required for conflict-free identity across machines; internal
  references (location, project, BOM links, document owners) were migrated too.
  Deletion is now logical (tombstone) so it propagates through sync.
• Migration note: an existing integer-id database is not auto-converted.
  Start from a fresh database and re-import your data (Bomist or native CSV).
• Synchronization is incremental: only entities changed since the last push
  are sent (scales to large inventories).
  Full Changelog: v1.6.0...v1.7.0