* fix: Allow locale preview on onboarding preferences page
When a user selects a different language on /onboarding/preferences,
the page now immediately displays in the selected language. This is
achieved by checking for a valid locale URL parameter before falling
back to the family's saved locale setting.
* fix: Harden locale param handling and restore locale in tests
- Add type check to ensure params[:locale] is a String before calling
.to_sym, preventing 500 errors from array/hash injection attacks
- Add teardown to tests to restore original locale, preventing test
pollution
* fix: Reload family in teardown to handle update_column
* fix: Remove edge case test that used update_column with nil locale
* fix: Simplify localize tests - rely on fixture defaults and transactional isolation
* fix: Update system test to expect Spanish button text after locale preview
* refactor: Use I18n.t for button text in system test instead of hardcoded string
---------
Co-authored-by: Claude <noreply@anthropic.com>
* Save work
* Subscriptions and trials domain
* Store family ID on customer
* Remove indirection of stripe calls
* Test simplifications
* Update brakeman
* Fix stripe tests in CI
* Update billing page to show subscription details
* Remove legacy columns
* Complete billing settings page
* Fix hardcoded plan name
* Handle subscriptions for self hosting mode
* Lint fixes
* Onboarding redirect tests and trial status bar
* use helper method
* Fix time tolerance failure
* Update post-onboarding message to be generic
* Disable turbo frames on Trial start button
* Update flash notice in test
