Add npm run test step to README.md workflows for local testing before committing

[Copilot]

Updated the README.md to include testing instructions in both sample query workflows, ensuring contributors validate their changes locally before committing.

Changes Made

Main workflow section:

• Added "Run npm run test to test your changes locally" as step 3 in the numbered workflow

Command line workflow section:

• Added new "### 5. Test your changes locally" section with instructions to run npm run test
• Updated subsequent section numbering (6→7, 7→8) to maintain proper sequence

Benefits

This change helps contributors:

• Catch validation errors early in sample queries (format, structure, GUIDs, etc.)
• Ensure their changes pass existing tests before creating PRs
• Reduce back-and-forth in code reviews due to test failures

The existing test infrastructure validates critical aspects like unique GUIDs, proper URL formats, valid JSON in POST bodies, and other sample query requirements.

Fixes #107.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• docs.microsoft.com
  • Triggering command: node scripts/test-initiator.js --no-watch (dns block)
• learn.microsoft.com
  • Triggering command: node scripts/test-initiator.js --no-watch (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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Pull Request Overview

This PR adds testing instructions to the README.md workflows to encourage contributors to validate their changes locally before committing. The change addresses issue #107 by adding npm run test steps to both the main workflow and command line workflow sections.

• Added testing step to the main numbered workflow
• Added new testing section to command line workflow with proper renumbering
• Maintains workflow sequence by updating subsequent section numbers

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