Function honour_publisher 

pub fn honour_publisher(
    type_name: &str,
    topic: &str,
    qos: QoSProfile,
) -> Result<QoSProfile, NodeError>

issue 1608 – the PUBLISHER counterpart of honour: the QoS a publisher registers with once the contract has had its say.

The rule is policy_verdict’s, with the POLICY direction reversed from a subscription’s because RxO is directional: a publisher that asked for less than the contract declares is RAISED to the declaration (the build reserved it, and every reader that matched the lower offer still matches), and one that asked for more is REFUSED (lowering it could break a match, keeping it rides storage nobody reserved). The depth rule is the subscription’s.

Called at every publisher registration – the Rust seams AND the C/C++ FFI seams. Unlike a subscription, a publisher has no call-site seam in C or C++ that already took the declaration (NROS_SUBSCRIBE’s three-argument form has no publisher counterpart, and the compile-time table carries no publisher rows), so the FFI seams honour too rather than strict-checking: a strict check there would refuse every create_publisher_in<M>(topic) whose default profile the contract refines.

#[inline] for honour’s measured reason: a None table must fold the call to Ok(qos) so an image with no contract is byte-identical.