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.
V1/Admin -> Company (company-scoped controllers)
V1/SuperAdmin -> Admin (platform-wide admin controllers)
V1/Customer -> CustomerPortal (customer-facing portal)
V1/Installation -> Setup (installation wizard)
V1/PDF -> Pdf (consistent casing)
V1/Modules -> Modules (drop V1 prefix)
V1/Webhook -> Webhook (drop V1 prefix)
The V1 prefix served no purpose - API versioning is in the route prefix
(/api/v1/), not the controller namespace. "Admin" was misleading for
company-scoped controllers. "SuperAdmin" is now simply "Admin" for
platform administration.
