Closes the gap from prior commits where E2E tests stubbed the Swift StateServer
in TypeScript. Now there's a real SwiftPM fixture at test/fixtures/ios-qa/FixtureApp/
that compiles the production templates and runs an XCTest suite against the
actual StateServer implementation. Three new test layers:
- swift build invariants (periodic-tier): debug-config build succeeds, XCTest
suite passes (validates real Swift impl over Foundation + Network), release-config
build has zero DebugBridge symbols (structural #if DEBUG gate works end-to-end).
- Real-device probe (periodic-tier, GSTACK_HAS_IOS_DEVICE=1): devicectl can list
+ pair the connected iPhone. Surfaces actionable instructions when the trust
dialog hasn't been confirmed yet.
- Fixture sources copied from ios-qa/templates/ — Package.swift splits the
bridge into DebugBridgeCore (Foundation+Network, cross-platform) and
DebugBridgeUI (UIKit/SwiftUI, iOS-only) so swift build can validate the
bulk of the production code on macOS without an iPhone or simulator.
Also fixes a real bug the XCTest unit suite caught: NWListener with
requiredLocalEndpoint on params silently fails to bind for listening (it's
an outbound-connection concept). Replaced with .requiredInterfaceType=.loopback
+ .acceptLocalOnly=true + a per-connection peer-address check. The fork's
inherited code had this bug; we shipped it untouched in v1.41.0.0 and the
new XCTest suite caught it immediately.