Bump Copilot CLI package to 1.0.71

[anthonykim1]

• Bump @github/copilot from ^1.0.70-0 to stable ^1.0.71 in the root, remote, and built-in Copilot extension manifests.
• Refresh the corresponding lockfiles so all @github/copilot-* platform packages resolve to 1.0.71.
• Keep @github/copilot-sdk unchanged at ^1.0.7-preview.0; this is a CLI runtime-only update.
• Refresh the Agent Host Copilot traffic snapshot for the new notifications/tools/list_changed notification.

Validation

• npm run typecheck-client
• cd extensions/copilot && npx vitest run --pool=forks src/extension/chatSessions/copilotcli/vscode-node/test/copilotCLISDKUpgrade.spec.ts — 3 passing
• Agent Host Copilot replay E2E — 15 passing, 1 skipped
• AGENT_HOST_REAL_SDK=1 AGENT_HOST_REPLAY_RECORD=1 ./scripts/test-integration.sh --run src/vs/platform/agentHost/test/node/protocol/copilotImportSession.integrationTest.ts — 3 passing
• Product/insider pipeline: build 456427. Dependency installation is currently blocked because Monaco's npm feed contains @github/copilot@1.0.71 but not the stable @github/copilot-<platform>@1.0.71 artifacts.

---

Inspirations from:

• The CLI version is kept aligned across the root package.json, remote/package.json, and the built-in Copilot extension package.json, following the existing VS Code package-bump layout.
• Platform-specific CLI packages continue to be selected and materialized by resolveCopilotCliSourceDir.

[Copilot]

Pull request overview

Updates the Copilot CLI runtime to stable version 1.0.71 across VS Code distributions.

Changes:

• Aligns root, remote, and Copilot extension dependencies.
• Refreshes platform-specific lockfile entries.
• Updates the Agent Host traffic snapshot for the new tools notification.

Show a summary per file

File	Description
package.json	Bumps the root CLI dependency.
package-lock.json	Locks root CLI platform packages to 1.0.71.
remote/package.json	Bumps the remote CLI dependency.
remote/package-lock.json	Locks remote CLI platform packages to 1.0.71.
extensions/copilot/package.json	Bumps the extension CLI dependency.
extensions/copilot/package-lock.json	Locks extension CLI platform packages to 1.0.71.
Agent Host traffic snapshot	Records the new notifications/tools/list_changed event.

Review details

Files not reviewed (2)

• extensions/copilot/package-lock.json: Generated file
• remote/package-lock.json: Generated file

• Files reviewed: 4/7 changed files
• Comments generated: 1
• Review effort level: Medium