Git proved that content-addressing file contents gives you integrity, history, efficient equality, and distributed collaboration for free. The same architecture applied to code relationships gives you something new: versioned intelligence that you can diff, cache, prove, and trust over time.
Most developers cargo-cult their SSH config from Stack Overflow. This is the setup I actually run: three GitHub identities on one machine, persistent control sockets, conditional git configs that auto-select the right key, and pinned known_hosts. No third-party tools.
Every PDF committed to git history stays there forever, bloating clones even after deletion. Git LFS adds cost and friction. GitHub Release assets offer a better approach: free CDN-backed storage with on-demand downloads, lightweight repos, and built-in migration tools.
Everyone uses Powerlevel10k, but do you understand how that fancy prompt actually works? Learn the ZSH primitives behind instant git status, command timing, and async rendering.