Phase 0: scaffold

Two SPM packages (VNCCore, VNCUI) + thin iOS app target wired via
xcodegen. Builds for iPhone 17 simulator, unit tests pass.

- VNCCore: SessionState, SessionController stub, Transport protocol
  with DirectTransport (NWConnection), DiscoveryService (Bonjour on
  _rfb._tcp and _workstation._tcp), SavedConnection @Model,
  ConnectionStore, KeychainService, ClipboardBridge
- VNCUI: ConnectionListView, AddConnectionView, SessionView,
  FramebufferView/FramebufferUIView (UIKit CALayer), InputMapper,
  SettingsView; UIKit bits guarded with #if canImport(UIKit) so
  swift test runs on macOS
- App: @main VNCApp, AppStateController state machine, RootView
- RoyalVNCKit dependency pinned to main (transitive CryptoSwift
  constraint blocks tagged releases)
- xcodegen Project.yml + README + .gitignore

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

README.md

@@ -0,0 +1,51 @@
+# Screens (working title)
+
+A VNC / RFB remote-desktop client for iPhone and iPad, modeled on [Screens by Edovia](https://www.edovia.com/en/screens/). See `/Users/treyt/.claude/plans/i-want-to-make-sprightly-pike.md` for the full plan.
+
+> The name "Screens" is owned by Edovia. Pick a different App Store name before any public release.
+
+## Layout
+
+```
+Screens/
+├── Screens/           # iOS app target (thin shell: @main, RootView, AppStateController)
+├── Packages/
+│   ├── VNCCore/       # Protocol + transport + storage. Tested with `swift test`.
+│   └── VNCUI/         # SwiftUI views + UIKit framebuffer. Tested in-simulator.
+├── Project.yml        # xcodegen project definition — generates the .xcodeproj
+├── README.md
+└── .gitignore
+```
+
+## Setup
+
+1. Install [xcodegen](https://github.com/yonaskolb/XcodeGen):
+   ```sh
+   brew install xcodegen
+   ```
+2. Generate the Xcode project from the repo root:
+   ```sh
+   xcodegen generate
+   ```
+3. Open `Screens.xcodeproj` in Xcode 16+. First open resolves the RoyalVNCKit SPM dependency.
+4. Select an iOS 18 simulator (or a signed device) and run.
+
+## Testing
+
+```sh
+# Fast unit tests (no simulator)
+cd Packages/VNCCore && swift test
+cd Packages/VNCUI   && swift test
+
+# Full app + UI tests (simulator)
+xcodebuild -project Screens.xcodeproj -scheme Screens -destination 'platform=iOS Simulator,name=iPhone 16' test
+```
+
+## Phase 0 status
+
+Scaffold only. Tapping a saved connection starts a `SessionController` but it only opens the TCP socket — no RFB handshake yet. Phase 1 wires RoyalVNCKit into `SessionController` and implements framebuffer rendering.
+
+## Dependencies
+
+- [RoyalVNCKit](https://github.com/royalapplications/royalvnc) (MIT) — RFB protocol, encodings, auth.
+- Apple first-party only: `Network`, `SwiftData`, `Security`, `UIKit`, `SwiftUI`, `Observation`.