* chore: migrate to vitest
* test: speed up some suites by sharing sessions and mocking expensive non-tested actions
* test: refactor some tests to verify behavior instead of implementation details
* chore: fix linting issues
test: use better-auth built-in test plugin
refactor: map auth errors server side
refactor: native trusted providers callback usage
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
## Release Notes
* **New Features**
* Enhanced SSO authentication error messaging with specific guidance for different failure scenarios (account linking required, email verification needed, banned accounts, invite-only access).
* **Chores**
* Updated authentication dependencies to version 1.5.0.
* **Tests**
* Extended test coverage for SSO error code handling and authentication scenarios.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
* feat(db): add support for multiple users and organizations
* feat: backfill entities with new organization id
* refactor: filter all backend queries to surface only organization specific entities
* refactor: each org has its own restic password
* test: ensure organization is created
* chore: pr feedbacks
* refactor: filter by org id in all places
* refactor: download restic password from stored db password
* refactor(navigation): use volume id in urls instead of name
* feat: disable registrations
* refactor(auth): bubble up auth error to hono
* refactor: use async local storage for cleaner context sharing
* refactor: enable user registration vs disabling it
* test: multi-org isolation
* chore: final cleanup
