swift/HarnessApp.xcodeproj — Xcode project (objectVersion 77, filesystem-synchronized Sources group: new Swift files under swift/Sources/ join the target automatically, no project edits needed).
swift/Sources/App — SwiftUI app entry point.
.smartconfig.json — @git.zone/tsswift configuration: scheme HarnessApp, platforms iOS + iPad, remote builder central-macos (global registry ~/.git.zone/tsswift/config.json) with this repo's own remote root.

Building

Builds run on the registered remote macOS builder via @git.zone/tsswift; no local Xcode required.

pnpm install
pnpm run doctor    # detect project, schemes, simulators, destination
pnpm run build     # build iOS + iPad simulator products on the mac builder
pnpm run emulators # list available simulators
pnpm run launch    # build and launch in the preferred simulator

The bundle identifier is com.modelprofile.harness; simulator builds need no signing team.