Update Documentation

Sync documentation from source-of-truth:

1. •

   Read package.json scripts section

   • •Generate scripts reference table
   • •Include descriptions from comments
2. •

   Read .env.example

   • •Extract all environment variables
   • •Document purpose and format
3. •

   Generate docs/CONTRIB.md with:

   • •Development workflow
   • •Available scripts
   • •Environment setup
   • •Testing procedures
4. •

   Generate docs/RUNBOOK.md with:

   • •Deployment procedures
   • •Monitoring and alerts
   • •Common issues and fixes
   • •Rollback procedures
5. •

   Identify obsolete documentation:

   • •Find docs not modified in 90+ days
   • •List for manual review
6. •

   Show diff summary

Single source of truth: package.json and .env.example