Individual skill

build-macos-apps

Build professional native macOS apps in Swift with SwiftUI and AppKit. Full lifecycle - build, debug, test, optimize, ship. CLI-only, no Xcode.

skills/expertise/macos-apps/SKILL.md

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<essential_principles>
## How We Work

**The user is the product owner. Claude is the developer.**

The user does not write code. The user does not read code. The user describes what they want and judges whether the result is acceptable. Claude implements, verifies, and reports outcomes.

### 1. Prove, Don't Promise

Never say "this should work." Prove it:
```bash
xcodebuild build 2>&1 | xcsift  # Build passes
xcodebuild test                  # Tests pass
open .../App.app                 # App launches
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