ci: resolve iOS simulator at runtime instead of pinning iPhone 16 (#54)

The `build-and-test` job hardcoded `-destination 'platform=iOS Simulator,
name=iPhone 16'`. When the `macos-latest` runner image rolls forward, that
model is no longer preinstalled (current image ships iPhone 16e / 17 / 17 Pro
/ Air, etc.), so xcodebuild fails destination resolution with exit 70 before
running a single test.

Resolve an available iPhone simulator at runtime via `simctl` + `jq` and pass
it by `id`. A generic destination (`generic/platform=iOS Simulator`) is not an
option here because the job runs `test`, which requires a bootable device.


Claude-Session: https://claude.ai/code/session_01J9mruKG6RSYg6SfPaq6MPG

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: alexvbush

.github/workflows/iOS.yml

@@ -28,11 +28,16 @@ jobs:
       - name: Run tests with coverage
         working-directory: ./Example
         run: |
+          # Resolve an available iPhone simulator at runtime instead of pinning a
+          # model name, which rots whenever the macos-latest runner image updates.
+          DEVICE_ID=$(xcrun simctl list devices available --json \
+            | jq -r '[.devices[][] | select(.name | test("iPhone"))] | first | .udid')
+          echo "Using simulator: $DEVICE_ID"
           xcodebuild \
             -workspace RIBs.xcworkspace \
             -scheme RIBs-Example \
             -sdk iphonesimulator \
-            -destination 'platform=iOS Simulator,name=iPhone 16' \
+            -destination "platform=iOS Simulator,id=$DEVICE_ID" \
             -enableCodeCoverage YES \
             clean test