Add create-pull-request safe output to github-mcp-tools-report workflow

[Copilot]

Overview

This PR adds create-pull-request safe output to the GitHub MCP investigator agentic workflow (github-mcp-tools-report.md), enabling it to automatically create pull requests for documentation updates.

What Changed

Added the following configuration to the workflow's safe-outputs section:

create-pull-request:
  title-prefix: "[mcp-tools] "
  labels: [documentation, automation]
  draft: false

Why This Matters

The GitHub MCP investigator workflow runs weekly to:

• Systematically explore all GitHub MCP server toolsets
• Document available tools organized by toolset
• Detect inconsistencies and changes
• Update comprehensive documentation files

Previously, the workflow only created a GitHub discussion with the tools report. Now it will also create pull requests when it updates:

• .github/instructions/github-mcp-server.instructions.md - Complete GitHub MCP server documentation
• .github/instructions/github-agentic-workflows.instructions.md - Default toolsets configuration
• pkg/cli/templates/instructions.md - Template default toolsets

Benefits

1. Reviewable Changes: Documentation updates can now be reviewed before merging
2. Change Tracking: Pull requests provide a clear audit trail of documentation evolution
3. Automation Labels: Automatically tagged with documentation and automation labels
4. Immediate Visibility: Created as non-draft PRs with [mcp-tools] prefix for easy identification

Validation

• ✅ All unit tests pass
• ✅ Workflow compiles successfully (229.4 KB)
• ✅ Full agent-finish validation passes
• ✅ All 64 workflows compile without errors

The compiled workflow now includes a complete create_pull_request job with appropriate permissions (contents: write, pull-requests: write) that runs after the agent completes its analysis.

Original prompt

Add create-pull-request safe output to github mcp investigator agentic workflow.

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