Improvement tracker: CI, vector search, and documentation

[net9876]

Improvements identified during repo review

⚙️ CI/CD

• Add .github/workflows/lint.yml with flake8 for Python linting
• Add .github/workflows/terraform.yml with terraform fmt -check and terraform validate

🔍 Features

• Replace keyword-based policy retrieval with vector search (e.g. Azure AI Search) for better policy matching
• Add more CloudOps check categories beyond cost/security/reliability

📖 Documentation

• Add GitHub topics/tags (e.g. azure, terraform, openai, azure-functions, cloudops, python)
• Add repo description on GitHub
• Add architecture diagram to README
• Document all REST API endpoints with example requests/responses

🧪 Testing

• Add unit tests for deterministic analyzers
• Add integration tests for Azure Function endpoints

Auto-generated during repo review.