fix: disable Next.js caching on dynamic GET routes and fetches

feat: set data mention confidence threshold to 0.5

feat: rename corpus to UNHCR and remove login authorization note text

feat: format dropdown names and add light/dark theme toggle

feat: bypass document assignments to allow access to all PDFs

fix: use whitespace-insensitive regex search when submitting annotations to support matching across line breaks

Remove ALLOWED_USERS and enable default document access for unconfigured users

Initial commit with Git LFS