The category emojis render as garbage (📗, 📘, 🚫) because of a file-encoding issue.
Files: frontend/src/pages/SubmissionForm.tsx (~lines 279, 291, 304). Grep the repo for other ðŸ occurrences.
Acceptance criteria:
- Emojis (📗 📘 🚫) display correctly
- File saved as UTF-8