Phase 4D-C2: build live-type Oper SBOw and Cancel MMS structures

[masarray]

Scope

Stacked on Phase 4D-C1. Port the C# smart-control value binder and service-structure contract into C++ using the live MMS TypeSpecification as the source of truth.

Implemented

• C#-aligned control-value kinds: Boolean, DoublePoint, Integer, Unsigned, FloatingPoint, StepPosition and Raw MMS
• DPC bit-string mapping with MMS network bit order (Off=01, On=10)
• live-type validation for boolean, bit-string, integer/BCD, unsigned, floating point, structures, octet/string shapes and raw MMS
• conservative StepPosition / ValWithTrans binding
• conservative analogue-structure binding using the exact live structure
• exact origin structure generation (orCat, orIdent)
• exact ctlNum integer/unsigned generation
• timestamp validation for UTC-time/BinaryTime
• deterministic epoch default for optional operTm
• exact two-bit Check: bit0 synchrocheck, bit1 interlock-check
• Oper and SBOw required fields: ctlVal, origin, ctlNum, T, Test, Check; optional operTm
• Cancel required fields: ctlVal, origin, ctlNum, T, Test; optional Check
• preserve live component order
• reject unknown/vendor-specific command components instead of guessing

Golden-wire evidence

A dedicated GCC/Clang strict-warning profile builds and tests the service structures. The Oper oracle checks the exact MMS Data bytes for DPC On, station-control/HMI origin, ctlNum=7, UTC timestamps, Test=false and Check=synchro+interlock, then decodes the bytes back through the existing MMS codec.

Additional failures cover missing required fields, wrong Check width, origin/ctlNum type mismatch, raw MMS mismatch, optional Cancel Check, StepPosition and analogue structures.

Deferred

• C3: CommandTermination / LastApplError InformationReport correlation and decoding
• C4: live association smart-control session and physical IED evidence

ESP32-P4 / Sampled Values work remains intentionally out of scope.

[masarray]

Closing as superseded by #43, which integrated Smart Control C1–C5 onto current main with the maintained MMS structures and interoperability path. This stacked C2 tranche is obsolete.