Initial commit: managed .NET 10 AVEVA Historian SDK + reverse-engineering toolkit

Full read-only SDK (src/AVEVA.Historian.Client) implementing the CLAUDE.md required
surface against AVEVA Historian's binary WCF protocol — no native AVEVA runtime
dependency. All operations live-verified against a local Historian:

- ProbeAsync, ReadRawAsync, ReadAggregateAsync, ReadAtTimeAsync, ReadEventsAsync
- BrowseTagNamesAsync, GetTagMetadataAsync (17 native data-type codes mapped)
- GetConnectionStatusAsync, GetStoreForwardStatusAsync, GetSystemParameterAsync
- 108/108 unit + integration tests pass

Includes the reverse-engineering toolkit (tools/AVEVA.Historian.ReverseEngineering)
used to decode the protocol: WCF probes, IL inspection via dnlib, and IL-rewrite
instrumentation (instrument-wcf-{write,read}message etc.) plus the .NET Framework
trace harness (tools/AVEVA.Historian.NativeTraceHarness) for parity testing.

Sanitized handoff evidence under docs/reverse-engineering/. Native AVEVA binaries
(current/, aveva-install-x64/, aveva-install-x86/) are gitignored — fetch separately
from the AVEVA installer.

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

docs/reverse-engineering/dumpbin-aahclientmanaged-dependents-latest.txt

@@ -0,0 +1,46 @@
+Microsoft (R) COFF/PE Dumper Version 14.44.35226.0
+Copyright (C) Microsoft Corporation.  All rights reserved.
+
+
+Dump of file current\aahClientManaged.dll
+
+File Type: DLL
+
+  Image has the following dependencies:
+
+    WS2_32.dll
+    Secur32.dll
+    VERSION.dll
+    RPCRT4.dll
+    NETAPI32.dll
+    MSVCP140.dll
+    KERNEL32.dll
+    USER32.dll
+    ADVAPI32.dll
+    SHELL32.dll
+    OLEAUT32.dll
+    CRYPT32.dll
+    VCRUNTIME140.dll
+    VCRUNTIME140_1.dll
+    api-ms-win-crt-stdio-l1-1-0.dll
+    api-ms-win-crt-string-l1-1-0.dll
+    api-ms-win-crt-filesystem-l1-1-0.dll
+    api-ms-win-crt-runtime-l1-1-0.dll
+    api-ms-win-crt-heap-l1-1-0.dll
+    api-ms-win-crt-convert-l1-1-0.dll
+    api-ms-win-crt-utility-l1-1-0.dll
+    api-ms-win-crt-math-l1-1-0.dll
+    ole32.dll
+    SHLWAPI.dll
+    api-ms-win-crt-time-l1-1-0.dll
+    mscoree.dll
+
+  Summary
+
+       DA000 .data
+       5D000 .nep
+        6000 .pdata
+      AB9000 .rdata
+        2000 .reloc
+        1000 .rsrc
+      465000 .text