- Add macos-alias to pnpm onlyBuiltDependencies for native module compilation
- Remove Windows/Linux makers and dependencies (Squirrel, Deb, Rpm)
- Remove electron-squirrel-startup from main process
- Simplify CI/release workflows to macOS-only
- Reduces dependencies by 92 packages

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>