The notification only said that the school had answered and linked into
the LMS, so a student had to log in to read two lines. Delivered mail
plus an unread thread was the common outcome — one such thread was a
pre-sale question that never converted.
The mail now carries the answer itself (capped at 2000 chars, with a
pointer to the thread when longer or when files are attached). Quoted
blocks are HTML-escaped, which they were not before.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Attachments uploaded via question-upload get a CDN URL
(files.second-brain.ru via S3_CDN_URL), but the validator only accepted
the direct S3 endpoint prefix — so every attachment was silently dropped
(message text saved, file lost). Add isAllowedPublicUrl (CDN + direct S3)
in lib/s3 and use it in both question routes.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- Add CLOSED status guard in messages POST (returns 409)
- Add extension allowlist check in upload route + text/x-markdown MIME type
- Sanitize files JSON array before DB write
- Add sendQuestionFollowUpEmail helper and use it for student follow-up replies
- Scope email field to staff only in questions list query
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Implements GET/POST /api/questions, GET /api/questions/[id] with read tracking, POST /api/questions/[id]/messages with email notifications, PATCH /api/questions/[id]/close for staff, and POST /api/student/question-upload for file attachments.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
adminsandClaude Fable 5