wip: pull request view & md rendering

fixtures/github/issues.pull_requests.created.page2.json

@@ -12,7 +12,7 @@
     "state": "closed",
     "state_reason": "not_planned",
     "title": "docs(deploy): document manual failover steps",
-    "body": null,
+    "body": "## Context\n\nDocuments the manual failover sequence for the staging stack while the automated path is still unstable.\n\n### Draft runbook\n1. Put the primary deployment in maintenance mode.\n2. Promote the standby database.\n3. Repoint the app workers and warm the cache.\n4. Verify health checks before reopening traffic.\n\n### Risks\n- secrets rotation is still manual\n- rollback steps need screenshots\n- [ ] add the final DNS validation command",
     "body_text": null,
     "body_html": null,
     "user": {