DersBridge: Tutor Calendar

New Features: • Improved pair management – You can now see the paired teacher’s or student’s user code (e.g. @abc123) directly in the pair list for quicker identification. • Localized pair errors – All pair search/add errors (missing user code, wrong role, user not found, already added, etc.) now respect the app language (English/Turkish). Improvements: • More meaningful login error messages for wrong password, user not found, invalid email, and similar cases. • Sign in with Apple: role selection sheet now asks for your name and suggests a user code from your email; invalid or duplicate codes are clearly highlighted. • Lesson requests: weekly recurring requests show which days of the week they repeat on, and approving a second request that overlaps in time is blocked with a clear conflict message.