[docs] Update documentation for features from 2025-11-16

[github-actions]

Documentation Updates - 2025-11-16

This PR updates the documentation based on features merged in the last 24 hours.

Features Documented

• MCP Server Update Tool (from Add update tool to MCP server #4110) - New update tool exposed through MCP server
• Playwright Version Pinning (from Pin Playwright to 1.56.1 and add NPM package update tracking #4103) - Default version pinned to 1.56.1 with option to override

Changes Made

• Updated docs/src/content/docs/setup/mcp-server.md:

  • Added update tool to the list of available CLI tools in the introduction (line 8)
  • Added update tool description in the Available Tools section with details about major version updates and force flag support (line 94)

• Updated docs/src/content/docs/reference/tools.md:

  • Added version parameter to Playwright tool example configuration (line 137)
  • Added "Version Pinning" section explaining the default version (1.56.1) and how to override it (line 140)

Merged PRs Referenced

• Add update tool to MCP server #4110 - Add update tool to MCP server
• Pin Playwright to 1.56.1 and add NPM package update tracking #4103 - Pin Playwright to 1.56.1 and add NPM package update tracking

Notes

All other merged PRs from the last 24 hours were internal refactoring, error message improvements, or workflow updates that do not require user-facing documentation changes:

• Refactor: Extract duplicate log metrics finalization logic #4105 - Refactor: Extract duplicate log metrics finalization logic (internal code improvement)
• Allow explicit "latest" version for Playwright while defaulting to pinned version #4101 - Allow explicit "latest" version for Playwright (implementation detail already covered in version pinning docs)
• Improve runtime_setup.go error messages with context and examples #4097 - Improve runtime_setup.go error messages (internal error handling)

Documentation follows the Diátaxis framework and adheres to the style guidelines in .github/instructions/documentation.instructions.md.

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