Adding GetAppDomainName cDAC API

[rcj1]

No description provided.

[Copilot]

Pull Request Overview

This PR implements a GetAppDomainName cDAC (Contract Debug Access Components) API that enables retrieval of AppDomain friendly names through the data contract reader system. This functionality allows debugging tools to access AppDomain names in a structured way rather than relying on legacy debugging interfaces.

Key changes:

• Adds FriendlyName field support to the AppDomain data contract infrastructure
• Implements the GetFriendlyName() method in the Loader contract interface
• Replaces the legacy implementation fallback with a full cDAC implementation in SOSDacImpl

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
SOSDacImpl.cs	Implements GetAppDomainName method with cDAC contracts and debug validation
AppDomain.cs	Adds FriendlyName property to AppDomain data structure
Loader_1.cs	Implements GetFriendlyName method in Loader contract
ILoader.cs	Adds GetFriendlyName method to ILoader interface
appdomain.hpp	Adds FriendlyName field offset to cdac_data structure
datadescriptor.h	Registers FriendlyName field in CDAC type definition
Loader.md	Documents the new GetFriendlyName API and data contract field

Comments suppressed due to low confidence (1)

docs/design/datacontracts/Loader.md:272

• Variable name 'pathStart' is misleading since it refers to the friendly name, not a path. Should be renamed to 'friendlyNamePtr' or similar.

    TargetPointer pathStart = target.ReadPointer(handle.Address + /* AppDomain::FriendlyName offset */);

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[max-charlamb]

Should be good once you get the tests to pass

[rcj1]

This looks like some infrastructure timeouts + the one test failure looks similar to what you had been seeing with StackAndOtherTests