- Fix Tailwind v4 modal stacking bug by adding relative z-10 to modal
content divs (CancellationFlow, ChangePlanModal, TopUpModal, SimActions)
- Add test mode for immediate plan changes (SIM_BILLING_TEST_MODE) instead
of scheduling for 1st of next month
- Bypass rate limiter spacing/cancellation checks in test mode
- Hide voice feature toggles for data-only SIMs using hasVoice flag
- Guard BFF voice feature updates to reject early for data-only SIMs
- Fix Freebit retry logic to not retry business errors (e.g. resultCode 260)
- Add user-friendly error message for resultCode 260 (voice not active)
- Update plan change page text to reflect test mode behavior
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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