Re-run of sql/125 Remediation C against the current v_transceiver_speed_errors
gap (596 as of 2026-07-17, mostly Cisco Systems 230 + Juniper Networks 220).
Same high-confidence-only logic: part-number speed token, capped at the form
factor physical max, no blind updates. 339/596 recovered mechanically, 257
genuinely need datasheet work (GE/FE/OC-rate parts with no G-token). Verified
the new switch-side (141) and transceiver-side (138) drift guards handled the
339 speed changes correctly: v_compat_speed_errors stayed at 0 throughout.
