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/instrument-wcf-readquery-latest.json

@@ -0,0 +1,18 @@
+{
+  "Source": "C:\\Users\\dohertj2\\Desktop\\histsdk\\artifacts\\reverse-engineering\\instrumented-wcf-read-boundary\\aahClientManaged.startdataquery.dll",
+  "Output": "C:\\Users\\dohertj2\\Desktop\\histsdk\\artifacts\\reverse-engineering\\instrumented-wcf-read-boundary\\aahClientManaged.wcfreadquery.dll",
+  "InstrumentedMethods": [
+    "0x06004A0D",
+    "0x06004A0E"
+  ],
+  "StartQuery2InsertedAfterOffset": "0x0293",
+  "GetNextQueryResultBuffer2InsertedAfterOffset": "0x0252",
+  "LoggerMethods": [
+    "LogUInt32",
+    "LogByteArray"
+  ],
+  "CapturedValues": [
+    "StartQuery2 success/clientHandle/queryRequestType/requestSize/responseSize/responseBytes/queryHandle/errorSize/errorBytes",
+    "GetNextQueryResultBuffer2 success/clientHandle/queryHandle/resultSize/resultBytes/errorSize/errorBytes"
+  ]
+}