Initial commit: Wonderware / System Platform tools and reference

Five tools under one repo, all docs organized per DOCS-GUIDE.md:

- aalogcli: .NET 4.8 / x86 CliFx CLI for reading System Platform binary
  logs (*.aaLGX) for LLM debugging, built on aaOpenSource/aaLog. Commands:
  last, tail, range, unread, fields. Stable JSON envelope under --llm-json.
  Build template under lib/build/ for rebuilding aaLogReader.dll.

- aot: ArchestrA Object Toolkit 2014 v4.0 reference material. Dev guide
  (Markdown converted from CHM), API reference for the ArchestrA.Toolkit
  namespace, and the Monitor / Watchdog VS sample solutions.

- graccesscli: .NET 4.8 / x86 CliFx CLI that automates Galaxy
  configuration via the ArchestrA GRAccess COM interop. Includes session
  daemon, IPC protocol, and llm-json envelope contract.

- grdb: SQL/DDL exploration of the Galaxy Repository database. DDL
  captures, reusable queries, hierarchy / contained-name <-> tag-name
  translation notes.

- histdb: LLM-oriented reference for AVEVA Historian retrieval. INSQL
  linked-server, extension tables, every wwXxx time-domain extension,
  every retrieval mode, alarm/event SQL recipes, REST API. Distilled
  from the 243-page Historian Retrieval Guide.

Root contains:
- CLAUDE.md: thin index pointing into each tool's README.
- DOCS-GUIDE.md: doctrine for organizing docs for LLM consumption.

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

aot/reference/CMxCustomStruct.md

@@ -0,0 +1,205 @@
+# CMxCustomStruct Class
+
+Namespace: `ArchestrA.Toolkit`
+
+CMxCustomStruct is derived from CMxCommon and provides support for custom data in the form of a guid and byte array.
+
+**Syntax**
+
+```csharp
+public class CMxCustomStruct : CMxCommon
+```
+
+## CMxCustomStruct Property
+
+### Value Property
+
+Provides a property to get and set the value as an MxCustomStruct.
+
+**Syntax**
+
+```csharp
+public MxCustomStruct Value { get; set; }
+```
+
+**Returns**
+
+MxCustomStruct
+
+## CMxCustomStruct Constructors
+
+### CMxCustomStruct Constructor
+
+Provides a default constructor.
+
+**Syntax**
+
+```csharp
+public CMxCustomStruct();
+```
+
+### CMxCustomStruct Constructor (int)
+
+Provides a constructor to initialize struct with an ID.
+
+**Syntax**
+
+```csharp
+public CMxCustomStruct(int id);
+```
+
+**Parameters**
+
+**`id`**
+
+[in] int value that holds the ID.
+
+### CMxCustomStruct Constructor (SupportWrapper, string)
+
+Provides a constructor to initialize the class for use in a primitive wrapper.
+
+**Syntax**
+
+```csharp
+public CMxCustomStruct(SupportWrapper _wrapper, string _attributeRef);
+```
+
+**Parameters**
+
+**`_wrapper`**
+
+[in] SupportWrapper.
+
+**`_attributeRef`**
+
+[in] string value that holds the attribute reference.
+
+## CMxCustomStruct Method
+
+### GetObject Method
+
+Provides a method to retrieve a serialized C# object from the data in a CMxCustomStruct.
+
+**Syntax**
+
+```csharp
+public object GetObject();
+```
+
+**Returns**
+
+object
+
+### StoreObject Method
+
+Provides a method to serialize and store a C# object into the data of a CMxCustomStruct.
+
+Syntax
+
+```csharp
+public void StoreObject(object obj);
+```
+
+**Parameters**
+
+**`obj`**
+
+[in] C# object to be stored.
+
+### Set Method
+
+Provides a method to set the value of the Attribute from a CMxCustomStruct.
+
+**Syntax**
+
+```csharp
+public void Set(CMxCustomStruct val);
+```
+
+**Parameters**
+
+**`val`**
+
+[in] CMxCustomStruct value to be set.
+
+## CMxCustomStruct Operator Overloads
+
+### CMxValue Operator Overload
+
+Provides an operator to convert a CMxCustomStruct into a CMxValue.
+
+**Syntax**
+
+```csharp
+public static implicit operator CMxValue(CMxCustomStruct val);
+```
+
+**Parameters**
+
+**`val`**
+
+[in] CMxCustomStruct value to convert to CMxValue.
+
+**Returns**
+
+CMxValue
+
+### MxCustomStruct Operator Overload
+
+Provides an operator to convert a CMxCustomStruct into a MxCustomStruct.
+
+**Syntax**
+
+```csharp
+public static implicit operator MxCustomStruct(CMxCustomStruct val);
+```
+
+**Parameters**
+
+**`val`**
+
+[in] CMxCustomStruct value to convert to MxCustomStruct.
+
+**Returns**
+
+MxCustomStruct
+
+### CMxCustomStruct Operator Overload (CMxValue)
+
+Provides an operator to convert a CMxValue into a CMxCustomStruct.
+
+**Syntax**
+
+```csharp
+public static implicit operator CMxCustomStruct(CMxValue val);
+```
+
+**Parameters**
+
+**`val`**
+
+[in] CMxValue value to convert to CMxCustomStruct.
+
+**Returns**
+
+CMxCustomStruct
+
+### CMxCustomStruct Operator Overload (MxCustomStruct)
+
+Provides an operator to convert a MxCustomStruct into a CMxCustomStruct.
+
+**Syntax**
+
+```csharp
+public static implicit operator CMxCustomStruct(MxCustomStruct x);
+```
+
+**Parameters**
+
+**`x`**
+
+[in] MxCustomStruct value to convert to CMxCustomStruct.
+
+**Returns**
+
+CMxCustomStruct