Replace execSync with async exec in generate_git_patch.cjs

[Copilot]

Migrates generate_git_patch.cjs from synchronous execSync to asynchronous execution for better performance and error handling.

Changes Made

• generate_git_patch.cjs: Converted from execSync to async execution using a dual-context approach that detects the runtime environment
• safe_outputs_handlers.cjs: Updated createPullRequestHandler and pushToPullRequestBranchHandler to be async functions
• generate_git_patch.test.cjs: Updated all test cases to await async function calls

Technical Details

The implementation uses a runtime detection pattern to support both execution contexts:

• In github-script context: Uses the global exec.getExecOutput API provided by actions/github-script
• In MCP server context: Falls back to promisified child_process.exec

This dual-context approach ensures the code works seamlessly in both GitHub Actions workflows (via github-script) and MCP server environments without requiring package imports that aren't available at runtime.

Testing

• ✅ All 8 unit tests passing
• ✅ JavaScript formatting validated
• ✅ Linting passed
• ✅ make agent-finish completed successfully
• ✅ No breaking changes to existing functionality

The code now uses modern async/await patterns instead of blocking synchronous calls, improving performance and allowing for better error handling while maintaining compatibility across different runtime environments.

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[pelikhan]

@copilot keep working

[pelikhan]

@copilot keep working

[pelikhan]

@copilot exec is a builtin object to actions/github-script. Do not import

[Copilot]

@copilot keep working

Completed migration from execSync to promisified exec for async execution. All tests and linting passing. Commit: 2f3a7fe

[Copilot]

@copilot exec is a builtin object to actions/github-script. Do not import

Updated to use exec from github-script global when available, with fallback to child_process.exec for MCP server context. Commit: 8bbeccd