sessions - allow to create new chat per repository from the section header

[bpasero]

No description provided.

[Copilot]

Pull request overview

Enables starting a new chat session for a specific repository directly from a repository section header in the Sessions view (Agent Sessions window), by switching to the New Session view and preselecting the repository.

Changes:

• Added a sessions management service API to derive a repository URI from an agent session’s metadata.
• Registered a new toolbar action on repository section headers to create a new session and preselect the repository.
• Added setProject(...) plumbing on NewChatViewPane/NewChatWidget to programmatically select a project in the workspace picker.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/vs/sessions/contrib/sessions/browser/sessionsManagementService.ts	Exposes a helper to obtain a repository URI from an IAgentSession.
src/vs/sessions/contrib/sessions/browser/sessions.contribution.ts	Adds a repository-section toolbar action that opens the New Session view and sets the project.
src/vs/sessions/contrib/chat/browser/newChatViewPane.ts	Adds setProject(...) on the view/widget to preselect a project via the workspace picker.

Comments suppressed due to low confidence (1)

src/vs/sessions/contrib/sessions/browser/sessionsManagementService.ts:471

• If getSessionRepositoryUri stays on the service, consider implementing it in terms of a session URI lookup rather than accepting an IAgentSession object. Resolving from agentSessionsService.model.getSession(resource) makes the method resilient to stale IAgentSession references and keeps the service API aligned with other URI-based entry points.

	getSessionRepositoryUri(session: IAgentSession): URI | undefined {
		const [repositoryUri] = this.getRepositoryFromMetadata(session);
		return repositoryUri;
	}