Adds contact, pairing, and offer models plus the gateway surface the feature
models will use. Contacts and offers are endpoint-scoped events with no
transfer id, so they get their own coalesced signals.
DeviceContact.displayName prefers the local label over the name the peer
claims, and carries a short endpoint fingerprint for telling apart devices
using the same name.
Add strict custom Iroh relay profiles with safe restart and rollback across the Rust core, Compose apps, and Apple apps. Preserve multi-relay invitations and fail closed on configuration or recovery mismatches.
- Introduce a CoreGateway protocol so feature models depend on a seam
(CoreRepository conforms); enables faking the core in tests
- Add a VniDropTests target with 42 tests mirroring the KMP suites:
approval coordinator, send/receive/settings/app models, preferences,
file previews, invitation decode, message queue, error mapping
- Add a fake gateway/file-system/device-info and fixtures
- Add .github/workflows/apple.yml: build the Rust core, generate the
project, and run the tests on an iOS Simulator
