October 2025 monthly summary for kart1ka/cal.com: Key focus on performance, reliability, and environment consistency in the public booking flow. Delivered targeted performance improvement on the public booking page by refactoring the email verification query to replace a slow OR-based Prisma query. This change preserves UI and business logic while reducing perceived latency during email verification, with automated tests and developer docs updated accordingly. Implemented timezone normalization by explicitly setting the Node.js process timezone to UTC to ensure consistent date/time handling across development, staging, and production environments. These changes enhance cross-environment reliability, data consistency, and overall system responsiveness, contributing to a smoother booking experience and lower support/friction in edge cases.