Required scope: stories:write
Adds a story to a task. This endpoint currently only allows for comment
stories to be created. The comment will be authored by the currently
authenticated user, and timestamped when the server receives the request.
Omit parent_comment to create a top-level comment. To create a threaded
reply, pass the top-level comment's comment_gid, not its story gid.
Retrieve it with GET /stories/{story_gid}?opt_fields=comment_gid or
GET /tasks/{task_gid}/stories?opt_fields=comment_gid,text,anchor_gid.
The parent must belong to this task and must not itself be a reply.
A top-level comment's anchor_gid is the task GID; a reply's anchor_gid
is its parent comment's envelope GID.
Returns the full record for the new story added to the task.