Review I2: Driver.Ab.Transport raises statuses that came off the wire in an
Execute PCCC reply (envelope CIP status, PCCC STS) as AbDeviceReplyException.
AbLegacy's IsLocalRefusal now excludes it, and the new IsAnsweredRefusal (used
by the read, write, probe and indirect-index paths) counts a wire Unsupported -
CIP 0x08/0x1C/0x20 on the envelope, STS 0x10 - as answered: per-tag
BadNotSupported, Healthy, LastSuccessfulRead advanced. Before, they landed in
the 'refused before the wire' neutral class. Pre-wire refusals are unchanged
(still neutral). A socket test covers all four codes (red before); transport
tests pin the marker and a pre-wire builder refusal as the positive control.
The AbCip Forward Open BadConnection path is untouched.
Refs #747
Claude-Session: https://claude.ai/code/session_01Ub9hGmYLQvn9XETzw7CMsT
Joseph Doherty
004c09fa13