Pause extracts in bulk

Queue the action for 1–1,000 accessible extractions. Requires extract UPDATE permission and an authenticated workspace user; service principals are not supported. Private connections must be owned by or shared with the caller. An identical retry with the same Idempotency-Key returns the existing task ID; reusing the key for a different action or resolved execution arguments returns 409. Keys are scoped to the agency, workspace and user and retained while the task exists. Selection validation and access checks still run on retries. This prevents duplicate submission, not repeated worker execution. Use the bulk status endpoint to poll progress.