Git

Comprehensive Alembic (official SQLAlchemy migration tool) guide: env.py setup, autogenerate detecting model changes (fields, indexes, constraints), batch scripts, downgrade rollback strategies, plus standard SOP for multi-developer migration branch conflicts and divergent head merging, with production deploy checklist.

Production GitHub Actions pipeline from scratch: npm/pip cache, multi-version Node/Python matrix builds, Docker layer caching, Lint+Test+Build+Publish stages, conditional execution, env matrix, failure retry, and release gating best practices. Complete workflow YAML included.

Master advanced Git: Interactive Rebase for history cleanup, Cherry-pick selective commit porting, Bisect binary-search bug regression hunting, reflog and reset recovery.