[docs] Update documentation for features from 2026-01-24/25

[github-actions]

Documentation Updates - January 24-25, 2026

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

Features Documented

1. Setup-CLI Action (from Add setup-cli action for installing gh-aw CLI by release tag #11683)

   • Added installation guide for the new setup-cli GitHub Action
   • Documented usage in CI/CD pipelines
   • Included examples with version verification
   • Location: docs/src/content/docs/setup/cli.md

2. MCP Mode Field Deprecation (from Remove mode field from custom MCP servers schema and add migration codemod #11719)

   • Documented the removal of the mode field from custom MCP server configurations
   • Added troubleshooting guide with error message and solution
   • Included automatic migration instructions using gh aw fix --write
   • Location: docs/src/content/docs/troubleshooting/common-issues.md

Changes Made

• Updated docs/src/content/docs/setup/cli.md:

  • Added new "GitHub Actions Setup Action" section under Installation
  • Documented the setup-cli action with features and examples
  • Linked to the comprehensive README for detailed information

• Updated docs/src/content/docs/troubleshooting/common-issues.md:

  • Added new "Deprecated mode Field in Custom MCP Servers" section
  • Explained the breaking change and provided migration path
  • Documented the automatic codemod fix available via gh aw fix

Merged PRs Referenced

• Add CLI command to create campaign project boards #11785 - Add CLI command to create campaign project boards (already documented in PR)
• Add setup-cli action for installing gh-aw CLI by release tag #11683 - Add setup-cli action for installing gh-aw CLI by release tag
• Remove mode field from custom MCP servers schema and add migration codemod #11719 - Remove mode field from custom MCP servers schema and add migration codemod
• Add GitHub App token minting for GitHub MCP server #11660 - Add GitHub App token minting for GitHub MCP server (already documented in PR Document GitHub App authentication for GitHub MCP server #11686)

Notes

• Campaign CLI documentation was already updated in PR Add CLI command to create campaign project boards #11785
• GitHub App authentication for MCP was already documented in PRs Add GitHub App token minting for GitHub MCP server #11660 and Document GitHub App authentication for GitHub MCP server #11686
• All other changes from the last 24 hours were internal refactoring or workflow improvements that don't affect user-facing documentation

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