61dd498eab
DriverArrayWriteSupport (Core.Abstractions, not this lane's) still lists AbLegacy as scalar-only, so every AbLegacy array node is materialised read-only and the new array encoder is unreachable from OPC UA. Adds the Modbus/S7-style parity test, skipped until follow-up F1 adds the AbLegacy row (Int/AnalogInt/Long/Float with a declared length), plus an active test pinning exactly which element types the encoder accepts. Refs #738 Claude-Session: https://claude.ai/code/session_01Ub9hGmYLQvn9XETzw7CMsT