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SQLAlchemy ORM and Alembic migration patterns

Rust testing patterns with cargo test and mockall

Advanced Backend Architecture (Clean/Hexagonal), Node.js, and Security Best Practices

Caching, Web Vitals, and Full-Stack Optimization

Tracing (OTEL), Metrics (Prometheus), and Structured Logging

Sentry error tracking and monitoring patterns

Advanced Database Reliability Engineering, Performance, and Safe Migrations

SQLx and Diesel database patterns

pytest patterns and best practices

Quality Assurance, Architecture Review, and Security Gates

Ownership, borrowing, and lifetime patterns

Guide for setting up Claude Code infrastructure in new or existing projects