Structured RCA report export (Markdown, PDF, Slack-formatted)

[nomadicmehul]

Summary

Generate polished, structured RCA reports from investigation results that can be shared with stakeholders, posted in Slack, or archived as PDF.

Current State

The Communication Drafter generates text-based RCA. Needs structured, exportable formatting.

Desired Output Format

# Incident RCA: [Title]
**Severity:** Critical | **Duration:** 23 min | **MTTR:** 4 min 12s

## Timeline
- 14:02 — OOMKill detected on payment-service-7b4f (pod restart #3)
- 14:02 — Investigation started (TheNightOps)
- 14:03 — Correlated with deployment payment-service:v2.4.1 (deployed 14:00)
- 14:04 — Sentry: new error "OutOfMemoryError in BatchProcessor.run()"
- 14:05 — RCA: Memory leak in v2.4.1 BatchProcessor — unbounded list growth

## Root Cause
...

## Remediation
...

## Prevention
...

Acceptance Criteria

• Structured Markdown RCA with timeline, root cause, remediation, prevention sections
• Include evidence links (trace IDs, dashboard URLs, Sentry issue URLs)
• Export formats: Markdown (file), Slack blocks (for posting), PDF (for archival)
• CLI: nightops rca export --incident <id> --format pdf
• Auto-post to Slack channel after resolution (if configured)