Take an unowned conversation yourself

POST 
/api/conversations/:conversationId/claim

"Üstlen" (doc 64 §6.6). Assigns the conversation to the caller only while it is still unowned — atomically, so of two people pressing at once exactly one wins and the other gets 409 naming the current owner. Allowed to anyone who can see the conversation unless the tenant routes through supervisors and has not let agents claim (403); another member's personal mailbox is never claimable.

Request

Responses

200

The claimed conversation, now owned by the caller.

401

Not authenticated. code: account_disabled means the member's seat was deactivated in this workspace: the session is over even though the token was not revoked (clients sign out and clean up).

403

Authenticated but not allowed.

404

Resource not found (or not visible to the current tenant).

409

Somebody else changed the owner between the moment the caller looked and the write (doc 64 §8). Carries the CURRENT owner so the screen can say who won.