Enhanced Netlify deployment workflow with robust monitoring and token validation

[Copilot]

✨ Summary

Enhances the Netlify deployment preview workflow with comprehensive error handling, deployment tracking, and automated MDX file freshness analysis.

Netlify Workflow Improvements

Deployment Triggers

• Added pull_request event support (open/synchronize) alongside manual netlify build comment trigger
• Team membership validation now skipped for automatic PR triggers (only enforced for manual comments)

Pre-deployment Validation

• Netlify API token validation before triggering builds
• Concurrent deployment detection prevents conflicts
• Posts actionable error comments for token expiration or ongoing builds

Deployment Discovery & Monitoring

• Commit-based deployment matching with branch-based fallback
• 45-second initial wait, then 10 polling attempts with 15s intervals
• Status monitoring polls every 90s for up to 30 minutes
• Real-time PR comment updates with IST timestamps

Outcome Handling

• Success: Posts preview URL with deployment logs
• Failure: Posts critical DO-NOT-MERGE warning with error details
• Timeout: Provides manual check instructions

MDX Freshness Tracking

New scripts/listMdxFreshness.mjs analyzes last commit dates for all tracked MDX files:

• Excludes release notes and style guides
• Groups by age buckets (0-6, 6-12, 12-18, 18-24, 24+ months)
• Generates markdown report with sortable tables

🖼️ Screenshots

N/A - Workflow automation changes

🔮 Engineering checklist

• Code changes are self-documenting or clearly commented/documented
• No new warnings or errors where added to the browser or build console
• Synthetics tests have been considered for any changes that might trigger false positives

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