Add Dependabot and GitHub Actions CI for automated updates (#33)

- Add Dependabot configuration for Swift and GitHub Actions dependencies
- Add CI workflow with builds for iOS and watchOS platforms
- Add CocoaPods lint check

Signed-off-by: tichise <43707+tichise@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>

Author: tichise

.github/dependabot.yml

@@ -1,3 +1,31 @@
+# Dependabot configuration file
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates
+
+version: 2
+updates:
+  # Swift Package Manager dependencies
+  - package-ecosystem: "swift"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+      timezone: "Asia/Tokyo"
+    open-pull-requests-limit: 10
+    commit-message:
+      prefix: "deps(swift):"
+
+  # GitHub Actions dependencies
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+      timezone: "Asia/Tokyo"
+    open-pull-requests-limit: 5
+    commit-message:
+      prefix: "deps(actions):"
 # To get started with Dependabot version updates, you'll need to specify which
 # package ecosystems to update and where the package manifests are located.
 # Please see the documentation for all configuration options:

.github/workflows/ci.yml

@@ -0,0 +1,72 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+      - main
+  pull_request:
+    branches:
+      - master
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: Build (${{ matrix.platform }})
+    runs-on: macos-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [iOS, watchOS]
+        include:
+          - platform: iOS
+            destination: "platform=iOS Simulator,name=iPhone 15,OS=latest"
+          - platform: watchOS
+            destination: "platform=watchOS Simulator,name=Apple Watch Series 9 (45mm),OS=latest"
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Select Xcode
+        run: sudo xcode-select -s /Applications/Xcode.app
+
+      - name: Show Xcode version
+        run: xcodebuild -version
+
+      - name: Build Swift Package
+        run: |
+          xcodebuild build \
+            -scheme MaterialDesignSymbol \
+            -destination "${{ matrix.destination }}" \
+            -skipPackagePluginValidation \
+            | xcpretty || true
+
+  swift-build:
+    name: Swift Build
+    runs-on: macos-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Select Xcode
+        run: sudo xcode-select -s /Applications/Xcode.app
+
+      - name: Build with Swift
+        run: swift build
+
+  pod-lint:
+    name: CocoaPods Lint
+    runs-on: macos-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Lint Podspec
+        run: pod lib lint --allow-warnings