FL-1405 feat: PostCommentCreated carries the community and its managers
CMS sets communityId and communityManagerIds when the comment lands on a community post, resolving the managers (every user with a row in communities_users_permissions for that community, D-12) at comment time. Both fields are absent for personal posts, so existing consumers are unaffected. Helpers IsCommunityComment / IsByCommunityManager give NMS the two decisions it needs: route to managers, and stay silent on an official comment (D-5).
Co-Authored-By: Claude Fable 5.1 noreply@anthropic.com
Closes FL-1405