Initial project state: .NET reference, design, Rust port (M0+M1), evidence

Layout:
- src/                    .NET 10 x64 reference: MxNativeCodec, MxNativeClient,
                          MxAsbClient, probes, tests, harnesses. Executable spec.
- design/                 Architectural plan for the Rust port (M0–M6), error
                          model, protocol invariants, risks (R1–R16), adversarial
                          review log (review.md).
- rust/                   Rust workspace. M0 skeleton + M1 codec parity.
                          mxaccess-codec: 215 unit tests + 2 cross-implementation
                          parity tests (byte-identical against .NET reference).
                          Other crates are M0 stubs awaiting M2+.
- captures/               Frida + netsh + pcap evidence per CLAUDE.md
                          ("captures are evidence, not throwaway logs").
- analysis/               Decompiled C# (frida/proxy/decompiled-*),
                          Ghidra exports for native DLLs (`exports/` only —
                          working state at `projects/` and AVEVA's input
                          binaries at `input/` are gitignored).
- docs/                   Reverse-engineering reference docs.
- tools/                  Setup-LiveProbeEnv.ps1 (Infisical credential fetcher),
                          Compute-Crc.ps1 (.NET parity helper).
- .github/workflows/      Rust CI: fmt + build + test + clippy on Windows.
- LICENSE                 MIT (Joseph Doherty, 2026).

Verified:
- cargo test --workspace → 217 passed (215 unit + 2 .NET parity), 0 failed
- cargo clippy --workspace -- -D warnings → clean
- cargo fmt --all -- --check → clean
- cargo publish --dry-run -p mxaccess-codec → packages cleanly

Excluded from history (see .gitignore):
- **/bin, **/obj, **/target — build artifacts
- analysis/ghidra/projects/ — Ghidra working state (regenerable)
- analysis/ghidra/input/ — AVEVA proprietary DLLs (vendor IP)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

analysis/decompiled/aaServicesContractIData/ArchestrAServices.ASBIDataContract/Variant.cs

@@ -0,0 +1,78 @@
+using System;
+using System.CodeDom.Compiler;
+using System.Diagnostics;
+using System.Xml.Serialization;
+using ArchestrAServices.Contract;
+
+namespace ArchestrAServices.ASBIDataContract;
+
+[Serializable]
+[GeneratedCode("System.Xml", "4.0.30319.233")]
+[DebuggerStepThrough]
+[XmlType(Namespace = "http://asb.contracts.idata.data/20111111")]
+public struct Variant
+{
+	private ushort typeField;
+
+	private int lengthField;
+
+	private byte[] payloadField;
+
+	public ushort Type
+	{
+		get
+		{
+			return typeField;
+		}
+		set
+		{
+			typeField = value;
+		}
+	}
+
+	public int Length
+	{
+		get
+		{
+			return lengthField;
+		}
+		set
+		{
+			lengthField = value;
+		}
+	}
+
+	[XmlElement(DataType = "base64Binary", IsNullable = true)]
+	public byte[] Payload
+	{
+		get
+		{
+			return payloadField;
+		}
+		set
+		{
+			payloadField = value;
+		}
+	}
+
+	public Variant(ref ArchestrAServices.Contract.Variant oldVariant)
+	{
+		lengthField = oldVariant.Length;
+		typeField = oldVariant.Type;
+		payloadField = oldVariant.Payload;
+	}
+
+	public Variant(ArchestrAServices.Contract.Variant oldVariant)
+	{
+		lengthField = oldVariant.Length;
+		typeField = oldVariant.Type;
+		payloadField = oldVariant.Payload;
+	}
+
+	public Variant(int Length, ushort Type, byte[] Payload)
+	{
+		lengthField = Length;
+		typeField = Type;
+		payloadField = Payload;
+	}
+}