[WSLC] Add wslc get cli session api

[chemwolf6922]

Summary of the Pull Request

• Add the WslcGetCliSession api.

PR Checklist

• Closes: Link to issue #xxx
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated if needed and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated if needed
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

Add test: WslcSdkTests::GetCliSession

[Copilot]

Pull request overview

Adds a new WSLC SDK entrypoint to obtain the default “CLI session” and centralizes the default CLI session naming logic so it can be shared by both the SDK and the wslc CLI.

Changes:

• Added WslcGetCliSession to the WSLC SDK (header + export + implementation) to open the default CLI session by name.
• Introduced wsl::windows::common::WSLCSessionDefaults (shared defaults for wslc-cli / wslc-cli-admin) and updated CLI/task/model/test code to use it.
• Added a Windows test validating WslcGetCliSession behavior.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
test/windows/WslcSdkTests.cpp	Adds GetCliSession SDK test and a release-only RAII wrapper for session refs.
test/windows/wslc/e2e/WSLCE2EHelpers.cpp	Switches default session name lookup to the new common defaults helper.
src/windows/WslcSDK/wslcsdk.h	Declares the new public WslcGetCliSession API.
src/windows/WslcSDK/wslcsdk.def	Exports WslcGetCliSession from the SDK DLL.
src/windows/WslcSDK/wslcsdk.cpp	Implements WslcGetCliSession by opening the default session by name.
src/windows/wslc/tasks/SessionTasks.cpp	Uses the common defaults helper for default session name + default-name checks.
src/windows/wslc/services/SessionModel.h	Removes default session naming helpers/constants from SessionOptions.
src/windows/wslc/services/SessionModel.cpp	Uses common defaults for display name and storage path selection.
src/windows/common/WslSecurity.h	Adds security::IsElevated() declaration.
src/windows/common/WslSecurity.cpp	Implements security::IsElevated() using the current access token.
src/windows/common/WSLCSessionDefaults.h	New common header encapsulating elevation-aware default session naming.
src/windows/common/CMakeLists.txt	Registers the new common header in the common target headers list.

[yao-msft]

Just curious about the context of the change, what're the scenarios that an app will need to access a cli session?

[chemwolf6922]

Just curious about the context of the change, what're the scenarios that an app will need to access a cli session?

Hi @yao-msft , Please refer to the build experience design doc. I'll try to send you internally. In short, this is for the dev loop where the developer builds their image in the cli session and pick it up directly when debugging.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 79 out of 80 changed files in this pull request and generated 1 comment.