Document the Paperclip event-shape quirk that silently disabled user-comment→CEO
routing: `issue.comment.created` carries the issue id in `event.entityId`, not
`payload.issueId` (payload has commentId/bodySnippet/reopened). Includes the
empirical log from case 8124-09-24, the issue_assignee_changed cancellation
chain, the fix (plugin PR #2), and verification.
Invariants: upholds CLAUDE.md "ניתוב comments דרך CEO"; G12/X15 (fix lives in the
platform-port shell, not the decision skills). Docs-only.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>