fix: downgrade @github/copilot to version 1.0.61 and update related dependencies in package.json and package-lock.json

[DonJayamanne]

docs: update markdown descriptions for reasoning effort in copilot package.json refactor: clean up unnecessary os-theme dependencies from package-lock.json

[Copilot]

Pull request overview

This PR updates VS Code’s bundled Copilot CLI dependency set by downgrading @github/copilot from 1.0.63 to 1.0.61 across the root app, the remote (vscode-reh) package, and the built-in Copilot extension, with corresponding lockfile updates (including removal of os-theme entries due to the downgraded dependency graph).

Changes:

• Downgrade @github/copilot to ^1.0.61 in package.json, remote/package.json, and extensions/copilot/package.json.
• Update all related package-lock.json files to pin @github/copilot and platform packages to 1.0.61.
• Remove os-theme (and @os-theme/*) from lockfiles as it is no longer pulled in by @github/copilot@1.0.61.

Show a summary per file

File	Description
package.json	Downgrades @github/copilot dependency range to ^1.0.61.
package-lock.json	Pins @github/copilot and platform-specific optional deps to 1.0.61 and removes os-theme entries.
remote/package.json	Mirrors the Copilot dependency downgrade for the remote (vscode-reh) package.
remote/package-lock.json	Pins remote dependency graph to Copilot 1.0.61 and removes os-theme entries.
extensions/copilot/package.json	Mirrors the Copilot dependency downgrade for the built-in Copilot extension.
extensions/copilot/package-lock.json	Pins extension dependency graph to Copilot 1.0.61 and removes os-theme entries.

Copilot's findings

Files not reviewed (2)

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

• Files reviewed: 3/6 changed files
• Comments generated: 4