Cal.com v5.5.9 — Release Notes & Engineering Impact

## What's Changed * fix: resolve type error causing CI failure by @anikdhabal in https://github.com/calcom/cal.com/pull/22793 * fix: improve error messages for PayPal credential validation by @sahitya-chandra in https://github.com/calcom/cal.com/pull/22786 * feat: BTCPay Server App by @TChukwuleta in https://github.com/calcom/cal.com/pull/21197 * chore: Log availability snapshot when booking is created by @joeauyeung in https://github.com/calcom/cal.com/pull/22782 * feat: add race condition test with dynamic date selection by @anikdhabal in https://github.com/calcom/cal.com/pull/22533 * fix: alignment of time unit select box content by @SinghaAnirban005 in https://github.com/calcom/cal.com/pull/22800 * fix: center-align timezone and edit availability button on mobile layout by @sahitya-chandra in https://github.com/calcom/cal.com/pull/22760 * fix: skip last name check when creating a booking in v2 by @Ryukemeister in https://github.com/calcom/cal.com/pull/22794 * chore: hash rate limit trackers api v2 by @ThyMinimalDev in https://github.com/calcom/cal.com/pull/22767 * refactor: rename app.ts to appRepository.ts for better naming consistency by @eunjae-lee in https://github.com/calcom/cal.com/pull/22693 * feat: rename repository files to include Repository suffix by @eunjae-lee in https://github.com/calcom/cal.com/pull/22716 * refactor: remove atoms dev from package.json by @supalarry in https://github.com/calcom/cal.com/pull/22811 * fix: date overrides for availability settings atom by @Ryukemeister in https://github.com/calcom/cal.com/pull/22701 * refactor: rename repository files to include Repository suffix by @eunjae-lee in https://github.com/calcom/cal.com/pull/22717 * fix: redir parameter for connect atoms by @Ryukemeister in https://github.com/calcom/cal.com/pull/22815 * feat: Support an array response for a field when used as `Value of Field` by @hariombalhara in https://github.com/calcom/cal.com/pull/22740 * fix: flaky e2e by @anikdhabal in https://github.com/calcom/cal.com/pull/22819 * fix: merge working hours when adjacent by @emrysal in https://github.com/calcom/cal.com/pull/21912 * feat: Improving Booking Visibility at Month-End by @CarinaWolli in https://github.com/calcom/cal.com/pull/22770 * chore: Refactor logs by @joeauyeung in https://github.com/calcom/cal.com/pull/22824 * fix: Errors in org onboarding in some edge cases by @hariombalhara in https://github.com/calcom/cal.com/pull/22711 * feat: enable PBAC checking on organization settings page by @sean-brydon in https://github.com/calcom/cal.com/pull/22467 * refactor: convert checkBookingLimits to class service with dependency injection by @devin-ai-integration[bot] in https://github.com/calcom/cal.com/pull/22768 * fix: Return empty available days if error querying calendar by @joeauyeung in https://github.com/calcom/cal.com/pull/22828 ## New Contributors * @TChukwuleta made their first contribution in https://github.com/calcom/cal.com/pull/21197 **Full Changelog**: https://github.com/calcom/cal.com/compare/v5.5.8...v5.5.9