macOS development

Don't use xcode directly to develop
Use pure swift 5.8 code to make the app. No interface builder. No SwiftUI.
Aim for compact code. Within methods, don't have groups of statements separated with newlines. No inline comments for simple code. Instead, split statements into sub-methods.
Use guard closes as much as possible to separate the happy-path under them
Organize source files into folders. Folders should group files that change together, at the same pace (e.g. one feature)
Favor low latency and responsiveness. Reuse objects, avoid wasting memory or I/O.

Workflow

Copy commands from ai/build.sh and run them, to confirm compilation works after you're done with implementing a change