Bug: Handle file upload errors gracefully #165
Description
Improve error handling during note file uploads so users see clear messages when uploads fail (e.g., due to size limits, unsupported formats, or network issues). Log errors for debugging.
Acceptance Criteria:
- Show user-friendly error messages on upload failures.
- Log error details for admins.
- Prevent partial/incomplete uploads from being stored.
Labels: bug, hacktoberfest