v6.1.15

## What's Changed
* chore: resolve @modelcontextprotocol/sdk to 1.26.0 by @pedroccastro in https://github.com/calcom/cal.com/pull/27640
* fix: update booking page terms text to use APP_NAME instead of "our" by @CarinaWolli in https://github.com/calcom/cal.com/pull/27834
* fix: add i18n + migration for booking history pbac by @sean-brydon in https://github.com/calcom/cal.com/pull/27836
* fix: API v2 `@GetWebhook()` decorator doesn't generate OpenAPI path by @Ryukemeister in https://github.com/calcom/cal.com/pull/27612
* perf: optimize getBusyTimesForLimitChecks with batched parallel queries by @Udit-takkar in https://github.com/calcom/cal.com/pull/27399
* feat: refactor billing to strategy implemention by @sean-brydon in https://github.com/calcom/cal.com/pull/27828
* refactor: apply biome formatting to apps/web by @eunjae-lee in https://github.com/calcom/cal.com/pull/27692
* feat: add claude specs by @Udit-takkar in https://github.com/calcom/cal.com/pull/26852
* fix: renamed `rediss://` to `redis://`  in .env.example by @romitg2 in https://github.com/calcom/cal.com/pull/27478
* fix: hide cancel/reschedule links in emails when disabled by @evertonresende in https://github.com/calcom/cal.com/pull/27637
* Populated Contributing Section with a welcoming summary by @Kmadhav824 in https://github.com/calcom/cal.com/pull/27830
* fix: use randomString() for booking UIDs in slots E2E tests by @anikdhabal in https://github.com/calcom/cal.com/pull/27847
* fix: ensure metadata key is always present in BOOKING_CREATED webhook payload by @devin-ai-integration[bot] in https://github.com/calcom/cal.com/pull/27300
* feat: caretta.so app by @PeerRich in https://github.com/calcom/cal.com/pull/27840
* fix: unable to add and remove org banner by @anikdhabal in https://github.com/calcom/cal.com/pull/27848
* feat: add UTM parameter data to insights bookings CSV download by @CarinaWolli in https://github.com/calcom/cal.com/pull/27854
* chore: add agent rules to prevent circular dependencies between packages by @hbjORbj in https://github.com/calcom/cal.com/pull/27860
* feat(form-builder): format field labels to display human-readable names by @Shrey-Sutariya in https://github.com/calcom/cal.com/pull/27858
* fix: adjusted zoho Token expiry time to miliseconds. by @saptarshi-bose in https://github.com/calcom/cal.com/pull/27855
* feat: add fallback action options to routing form fallback section by @joeauyeung in https://github.com/calcom/cal.com/pull/27449
* perf: use UNION ALL with DISTINCT for bookings query optimization by @keithwillcode in https://github.com/calcom/cal.com/pull/27841
* refactor: apply biome formatting to packages/features by @eunjae-lee in https://github.com/calcom/cal.com/pull/27844
* fix: few flaky api v2 e2e tests by @anikdhabal in https://github.com/calcom/cal.com/pull/27849
* feat: login overlay re design by @Udit-takkar in https://github.com/calcom/cal.com/pull/27800
* fix: Improve wrong assignment report by @joeauyeung in https://github.com/calcom/cal.com/pull/27162
* chore(deps): resolve fast-xml-parser to 5.3.4 by @pedroccastro in https://github.com/calcom/cal.com/pull/27887
* fix: maintain uid parameter in BookingDetailsSheet URL by @eunjae-lee in https://github.com/calcom/cal.com/pull/27872
* feat: re-render bookings page after feature opt-in without full refresh by @eunjae-lee in https://github.com/calcom/cal.com/pull/27873
* fix(form-builder): correct value of selection box behavior in Edit of new Added Question dialog by @Shrey-Sutariya in https://github.com/calcom/cal.com/pull/27890
* fix: feedback dialog overlay on intercom by @dhairyashiil in https://github.com/calcom/cal.com/pull/27892
* chore: Remove /api/ routes from proxy by @keithwillcode in https://github.com/calcom/cal.com/pull/27883
* feat: add list formatting options to profile and event description editor by @SinghaAnirban005 in https://github.com/calcom/cal.com/pull/27838
* fix: support underscores in workflow template variables with backward compatibility by @hariombalhara in https://github.com/calcom/cal.com/pull/27571
* feat: add wrong routing tab under Insights for reviewing assignment reports by @joeauyeung in https://github.com/calcom/cal.com/pull/27423

## New Contributors
* @Kmadhav824 made their first contribution in https://github.com/calcom/cal.com/pull/27830
* @saptarshi-bose made their first contribution in https://github.com/calcom/cal.com/pull/27855

**Full Changelog**: https://github.com/calcom/cal.com/compare/v6.1.14...v6.1.15