## Triage Report — Alert #4821

**Alert:** IndexError in /api/reports/generate (Sentry PROJ-4821)
**Severity:** P1 — High
**Status:** Fix implemented, PR open

### Root Cause
The `pdf_texts` array is empty when a report has no attachments, but
`generate_summary()` accesses `pdf_texts[0]` unconditionally. This
crashes the endpoint for any report without PDF uploads.

### Timeline
- **14:32 UTC** — First error in Sentry (3 occurrences in 10 min)
- **14:33 UTC** ��� SWEny triage triggered, investigation started
- **14:34 UTC** — Root cause identified, fix branch created
- **14:35 UTC** — PR #287 opened: "fix: guard empty pdf_texts before access"

### Actions Taken
- Created Linear issue OFF-1020 (P1, assigned to backend team)
- Opened PR #287 with minimal fix (added empty-array guard)
- Notified #engineering channel via Slack