Update default CLI versions: Claude Code 2.1.38, Copilot 0.0.406, Playwright v1.58.2

[Codex]

Three CLI defaults needed bumps (no breaking changes): Claude Code adds --effort, Copilot CLI gains new model/flags, and Playwright browser fixes trace/stdin and macOS rendering.

• Version constants updated

  • DefaultClaudeCodeVersion → 2.1.38
  • DefaultCopilotVersion → 0.0.406
  • DefaultPlaywrightBrowserVersion → v1.58.2

• Reference code

  // pkg/constants/constants.go
  const DefaultClaudeCodeVersion Version = "2.1.38"
  const DefaultCopilotVersion    Version = "0.0.406"
  const DefaultPlaywrightBrowserVersion Version = "v1.58.2"

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[ca] CLI Version Updates: Claude Code 2.1.38, Copilot CLI 0.0.406, Playwright Browser v1.58.2</issue_title>
<issue_description>### Summary

Three CLI tools have new versions available. All updates include bug fixes and improvements without breaking changes.

• Claude Code: 2.1.34 → 2.1.38 (4 versions, published Feb 7-10)
• Copilot CLI: 0.0.405 → 0.0.406 (1 version, published Feb 7)
• Playwright Browser: v1.58.1 → v1.58.2 (1 version, published Feb 6)

Update Priority: Medium
Breaking Changes: None
Risk Level: Low

Update: Claude Code (2.1.34 → 2.1.38)

Timeline: Feb 7-10, 2026 (4 versions over 3 days)

New Features

• Effort Level Control (v2.1.38): New --effort (level) flag to control effort level (low, medium, high) for the current session

View Version History

Release Dates:

• v2.1.38: 2026-02-10 00:06 UTC
• v2.1.37: 2026-02-07 18:39 UTC
• v2.1.36: 2026-02-07 17:25 UTC
• v2.1.35: Not available in NPM registry

View CLI Changes

New Command-Line Flag:

+ --effort (level)                                  Effort level for the current session (low, medium, high)

This new flag allows users to control the computational effort Claude applies to solving problems, enabling fine-tuned performance vs. speed tradeoffs.

Help Output Comparison:

• Compared v2.1.34 with v2.1.38
• Only change detected: Addition of --effort flag
• No deprecated or removed features

Impact Assessment

• Risk: Low
• Affects: Session configuration options
• Migration: None required - new optional flag

Recommendations

1. Update Priority: Medium - new effort control feature may be useful for performance tuning
2. Testing Strategy: Verify --effort flag works in CI environments
3. Rollout: Safe to deploy immediately

Package Links:

• NPM Package: https://www.npmjs.com/package/`@anthropic-ai/claude-code`
• Latest Version: https://www.npmjs.com/package/`@anthropic-ai/claude-code`/v/2.1.38

---

Update: Copilot CLI (0.0.405 → 0.0.406)

Timeline: Feb 5-7, 2026 (2 days between releases)

Breaking Changes

None

Key Features

• Claude Opus 4.6 Fast (Preview): Added support for the latest Claude model
• Markdown Formatting: Now displays in non-interactive mode output
• Subscription Warning: Display warning when user has no Copilot subscription
• Plugin Commands → Skills: Commands from plugins are now translated into skills
• Changelog Command: New /changelog command to view release notes
• Plugin Marketplace: plugin marketplace add now accepts URLs as sources
• Experimental Flag: --no-experimental flag disables experimental features

View Full Changelog (0.0.406)

From https://github.com/github/copilot-cli/blob/main/changelog.md:

0.0.406 - 2026-02-07

New Features:

• Add support for Claude Opus 4.6 Fast (Preview)
• Markdown formatting displays in non-interactive mode output
• Display warning when user has no Copilot subscription
• Commands from plugins are now translated into skills
• Add /changelog command to view release notes
• plugin marketplace add accepts URLs as sources
• --no-experimental flag disables experimental features

Improvements:

• CLI interface renders without extra blank line
• /mcp show displays enabled/disabled status for MCP tools
• MCP tool responses now include structured content (images, resources) for richer UI display in VS Code

0.0.405 - 2026-02-05

Bug Fixes:

• Plugin and marketplace names support uppercase letters
• /experimental shows help screen listing experimental features
• Fix SQL tool disconnects
• Plugins can bundle LSP server configurations

View CLI Discovery

Unable to Install Locally: Permission restrictions prevented installing Copilot CLI 0.0.406 in the CI environment to compare help outputs.

Changelog Analysis:

• New Command: /changelog - View release notes
• New Flag: --no-experimental - Disable experimental features
• Updated Command: /mcp show - Now shows enabled/disabled status
• Model Support: Claude Opus 4.6 Fast (Preview) added

Repository Access: Successfully accessed https://github.com/github/copilot-cli to retrieve full changelog

Impact Assessment

• Risk: Low
• Affects: Non-interactive mode output formatting, plugin system, MCP tool display, model options
• Migration: None required - all changes are additive or improvements

Recommendations

1. Update Priority: Medium - includes new Claude Opus 4.6 Fast model support
2. Testing Strategy:
   • Test non-interactive mode markdown rendering
   • Verify /changelog command functionality
   • Test plugin-to-skill t...

• Fixes [ca] CLI Version Updates: Claude Code 2.1.38, Copilot CLI 0.0.406, Playwright Browser v1.58.2 #14776