Add inline 'Create pull request' confirmation for completed tasks without PRs

[osortega]

Introduce an inline confirmation button for creating pull requests after tasks complete without one. This change enhances user experience by allowing users to opt-in for PR creation directly from the task history.

[Copilot]

Pull request overview

Adds an inline, opt-in “Create pull request” confirmation at the end of v2 Task API session history when a task completes without an attached PR, and wires a new backend API call to materialize the PR on demand.

Changes:

• Extend the v2 task backend surface with createPullRequestForTask(...) and disable auto-PR creation on task creation (create_pull_request: false).
• Append a ChatResponseConfirmationPart (“Create pull request”) to completed/idle PR-less task histories and route its click handling via a new kind: 'create-pr' confirmation discriminator.
• Add tests covering the inline confirmation rendering, create-PR delegation plumbing, URL repo parsing, and confirmation metadata validation/back-compat.

Show a summary per file

File	Description
src/vs/monaco.d.ts	Minor doc alignment for folding markers comment.
extensions/copilot/src/extension/chatSessions/vscode/cloudAgentBackend.ts	Adds v2 backend API shape for creating PRs after task completion.
extensions/copilot/src/extension/chatSessions/vscode-node/test/copilotCloudSessionsProvider.spec.ts	Adds tests for inline create-PR confirmation, backend behavior, URL parsing, and metadata validation.
extensions/copilot/src/extension/chatSessions/vscode-node/taskApiBackend.ts	Disables auto-PR creation on task create and implements createPullRequestForTask; exports parseRepoFromTaskUrl.
extensions/copilot/src/extension/chatSessions/vscode-node/copilotCloudSessionsProvider.ts	Adds create-PR confirmation discriminator routing + handler and passes inline create-PR context into history building.
extensions/copilot/src/extension/chatSessions/vscode-node/copilotCloudSessionContentBuilder.ts	Appends the inline “Create pull request” confirmation to task history when appropriate.
extensions/copilot/src/extension/chatSessions/vscode-node/copilotCLIChatSessions.ts	Updates delegation metadata to include kind: 'delegation'.

Copilot's findings

• Files reviewed: 6/7 changed files
• Comments generated: 4

[stasyu2009-ux]

const prInfo = await this.cloudSessionProvider.delegate(request, stream, context, token, {
prompt: request.prompt,
chatContext: context,
kind: 'delegationConfirmation' // Add this line
}); Додати код та запустити заново а там все я сам зробив

[Copilot]

Copilot's findings

• Files reviewed: 11/12 changed files
• Comments generated: 5