Existing accounts inherited the company language at creation time and there was no way to change UI language per user. Add a 'Default (Company Language)' entry to the language selector in UserGeneralView, persist the choice through userStore.updateUserSettings and reload the i18n bundle via window.loadLanguage. The 'default' sentinel keeps the user opted in to the company-wide setting.
Bootstrap (global.store) now syncs userForm from current_user data and resolves the active UI language as user > company > 'en'. RegisterController, InvitationRegistrationController and MemberService seed new users with language=default instead of copying the current company setting, so promoting/inviting members no longer leaks the inviter's frozen language.
When inviting an email without an InvoiceShelf account, the email now
links to a registration page (/register?invitation={token}) instead of
login. After registering, the invitation is auto-accepted.
Backend:
- InvitationRegistrationController: public details() and register()
endpoints. Registration validates token + email match, creates account,
auto-accepts invitation, returns Sanctum token.
- AuthController: login now accepts optional invitation_token param to
auto-accept invitation for existing users clicking the email link.
- CompanyInvitationMail: conditional URL based on user existence.
- Web route for /invitations/{token}/decline (email decline link).
Frontend:
- RegisterWithInvitation.vue: fetches invitation details, shows company
name + role, registration form with pre-filled email.
- Router: /register route added.
Tests: 3 new tests (invitation details, register + accept, email mismatch).
