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* fix: use relative redirects in booking confirmation routes to fix localhost redirect issue When Cal.com runs behind a reverse proxy, request.url may return the internal server URL (localhost:3000) instead of the external URL. This causes users to be redirected to localhost after confirming bookings via email links. This fix changes the redirect URLs from using url.origin (which could be localhost) to using relative URLs via new URL(path, request.url). This ensures the browser resolves the redirect against whatever domain the user actually requested, fixing the issue for self-hosted deployments behind proxies. Fixes #20358 Co-Authored-By: Volnei Munhoz <volnei.munhoz@gmail.com> * test: add tests for booking confirmation redirect URL construction Add unit tests for verify-booking-token and link API routes to ensure: - Redirect URLs preserve the request origin (not hardcoded localhost) - Redirect URLs use the correct booking path (/booking/{uid}) - Error messages are properly encoded in query params - POST handler returns correct 303 status code These tests verify the fix for #20358 where users were redirected to localhost:3000 instead of the proper production URL after confirming bookings via email links. Co-Authored-By: Volnei Munhoz <volnei.munhoz@gmail.com> * fix: add second argument to GET/POST calls in test files to fix type errors Co-Authored-By: Volnei Munhoz <volnei.munhoz@gmail.com> --------- Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>