chore: move swabble into apps

apps/swabble/.github/workflows/ci.yml

@@ -0,0 +1,54 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  build-and-test:
+    runs-on: macos-latest
+    defaults:
+      run:
+        shell: bash
+        working-directory: swabble
+    steps:
+      - name: Checkout swabble
+        uses: actions/checkout@v4
+        with:
+          path: swabble
+
+      - name: Select Xcode 26.1 (prefer 26.1.1)
+        run: |
+          set -euo pipefail
+          # pick the newest installed 26.1.x, fallback to newest 26.x
+          CANDIDATE="$(ls -d /Applications/Xcode_26.1*.app 2>/dev/null | sort -V | tail -1 || true)"
+          if [[ -z "$CANDIDATE" ]]; then
+            CANDIDATE="$(ls -d /Applications/Xcode_26*.app 2>/dev/null | sort -V | tail -1 || true)"
+          fi
+          if [[ -z "$CANDIDATE" ]]; then
+            echo "No Xcode 26.x found on runner" >&2
+            exit 1
+          fi
+          echo "Selecting $CANDIDATE"
+          sudo xcode-select -s "$CANDIDATE"
+          xcodebuild -version
+
+      - name: Show Swift version
+        run: swift --version
+
+      - name: Install tooling
+        run: |
+          brew update
+          brew install swiftlint swiftformat
+
+      - name: Format check
+        run: |
+          ./scripts/format.sh
+          git diff --exit-code
+
+      - name: Lint
+        run: ./scripts/lint.sh
+
+      - name: Test
+        run: swift test --parallel