[ca] CLI Version Updates: Claude Code 2.1.39, Copilot 0.0.406, Sandbox Runtime 0.0.37, Playwright v1.58.2

[github-actions]

Four CLI tools and runtime dependencies have new versions available requiring updates.

Update Summary

Tool	Current	Latest	Priority	Release Date
Claude Code	2.1.34	2.1.39	Medium	Feb 10, 2026
GitHub Copilot CLI	0.0.405	0.0.406	Medium	Feb 7, 2026
Sandbox Runtime	0.0.34	0.0.37	Low	Feb 10, 2026
Playwright Browser	v1.58.1	v1.58.2	Low	Feb 6, 2026

Status: constants.go has been updated in pkg/constants/constants.go:307,312,383,389

Next Steps: Complete make recompile to regenerate workflow lock files after Go proxy access is restored.

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Claude Code (2.1.34 → 2.1.39)

Release Timeline: 5 patch versions released over 4 days (Feb 6-10, 2026)

Intermediate Versions: 2.1.34 → 2.1.36 → 2.1.37 → 2.1.38 → 2.1.39

• Note: 2.1.35 was skipped in the release sequence

Key Features

• New --effort flag: Control effort level for sessions (low, medium, high)
  • Added in version 2.1.38
  • Provides fine-grained control over AI resource allocation per session

CLI Changes

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

Discovered via: Comparing cached help outputs from 2.1.34 and 2.1.38

View Full Changelog

Release History

• 2.1.39: Feb 10, 2026 21:12 UTC
• 2.1.38: Feb 10, 2026 00:06 UTC
• 2.1.37: Feb 7, 2026 18:39 UTC
• 2.1.36: Feb 7, 2026 17:25 UTC
• 2.1.34: Feb 6, 2026 06:38 UTC

Impact Assessment

• Risk: Low (patch versions, single new flag)
• Affects: Session configuration, effort control
• Breaking Changes: None detected

Package Links

• NPM Package: https://www.npmjs.com/package/`@anthropic-ai/claude-code`
• Homepage: https://github.com/anthropics/claude-code

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GitHub Copilot CLI (0.0.405 → 0.0.406)

Release Date: February 7, 2026

Breaking Changes

None

Key Features

• Claude Opus 4.6 Fast (Preview): Support for the latest Claude model variant
• /changelog command: View release notes directly from the CLI
• Plugin marketplace URLs: Plugin commands now accept URLs as sources
• --no-experimental flag: Disable experimental features when needed
• MCP tool status: /mcp show displays enabled/disabled status for MCP tools

Bug Fixes

• Markdown formatting now displays correctly in non-interactive mode output
• Warning displayed when users lack Copilot subscriptions
• CLI interface renders without extra blank lines
• Plugin commands translated into skills

Enhancements

• MCP tool responses now feature structured content including images and resources for enhanced VS Code UI display

View Full Changelog

Release Highlights (from GitHub)

Published: February 7, 2026

The latest release introduces several enhancements:

• Support added for Claude Opus 4.6 Fast (Preview)
• Markdown formatting now displays in non-interactive mode output
• Warning displayed when users lack Copilot subscriptions
• Plugin commands are translated into skills
• New /changelog command for viewing release notes
• Plugin marketplace accepts URLs as sources
• --no-experimental flag to disable experimental features
• CLI interface renders without extra blank lines
• /mcp show displays enabled/disabled status for MCP tools
• MCP tool responses now feature structured content including images and resources for enhanced VS Code UI display

Impact Assessment

• Risk: Medium (new model support, CLI interface changes)
• Affects: Model selection, MCP tool management, plugin system
• Breaking Changes: None

Recommendations

• Integration Testing: As noted in constants.go:311, upgrading Copilot CLI requires a full integration test run to ensure compatibility
• Test Areas: Focus on model selection, MCP tool configuration, and plugin marketplace functionality

Package Links

• NPM Package: https://www.npmjs.com/package/`@github/copilot`
• Repository: https://github.com/github/copilot-cli
• Release Notes: https://github.com/github/copilot-cli/releases/tag/v0.0.406

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Sandbox Runtime (0.0.34 → 0.0.37)

Release Date: February 10, 2026 23:41 UTC

Note: Version jumped from 0.0.34 to 0.0.37, skipping 0.0.35 and 0.0.36

Release Timeline

• 0.0.34: Feb 2, 2026 10:40 UTC
• 0.0.37: Feb 10, 2026 23:41 UTC (8 days later)

View Full Changelog

Changes

No public changelog or GitHub releases available for this NPM-only package. The repository at https://github.com/anthropic-experimental/sandbox-runtime does not publish GitHub releases.

Impact Assessment

• Risk: Low (internal runtime dependency)
• Affects: Anthropic Sandbox Runtime (ASRT) security boundaries
• Breaking Changes: Unknown (no public changelog)

Package Links

• NPM Package: https://www.npmjs.com/package/`@anthropic-ai/sandbox-runtime`
• Repository: https://github.com/anthropic-experimental/sandbox-runtime

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Playwright Browser (v1.58.1 → v1.58.2)

Release Date: February 6, 2026

Breaking Changes

None

Key Features

None - maintenance release

Bug Fixes

• Trace Viewer Fix: Make paths via stdin work
  • fix(trace viewer): make paths via stdin work microsoft/playwright#39121
• Chromium Mac Fix: Do not force swiftshader on chromium mac
  • fix: do not force swiftshader on chromium mac microsoft/playwright#39129

Browser Versions

• Chromium 145.0.7632.6
• Mozilla Firefox 146.0.1
• WebKit 26.0

View Full Changelog

Release Highlights (from GitHub)

Release Date: February 6, 2026

Highlights

• Trace Viewer Fix: "make paths via stdin work"
  (fix(trace viewer): make paths via stdin work microsoft/playwright#39121)

• Chromium Mac Fix: "do not force swiftshader on chromium mac"
  (fix: do not force swiftshader on chromium mac microsoft/playwright#39129)

Browser Versions

• Chromium 145.0.7632.6
• Mozilla Firefox 146.0.1
• WebKit 26.0

Impact Assessment

• Risk: Low (bug fixes only)
• Affects: Trace viewer functionality, Chromium on macOS
• Breaking Changes: None

Package Links

• Repository: https://github.com/microsoft/playwright
• Release Notes: https://github.com/microsoft/playwright/releases/tag/v1.58.2
• Docker Image: mcr.microsoft.com/playwright:v1.58.2

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Implementation Status

Completed

• ✅ Version research and changelog analysis
• ✅ Updated pkg/constants/constants.go with new versions
• ✅ Saved version check results to cache-memory

Blocked

• ⏸️ make recompile blocked by Go proxy access (Forbidden errors from proxy.golang.org)
• ⏸️ Workflow lock file regeneration pending build success

Next Actions

1. Restore Go Proxy Access: Resolve Forbidden errors when accessing proxy.golang.org
2. Complete Build: Run make recompile to regenerate workflow lock files
3. Validate Changes: Verify workflow compilation succeeds
4. Integration Testing: Run full test suite, especially for Copilot CLI upgrade

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References:

• §21888055385

AI generated by CLI Version Checker

• expires on Feb 13, 2026, 12:43 AM UTC