Added Github Actions

.github/workflows/auto-tag.yml

@@ -0,0 +1,52 @@
+name: Auto Tag on Push
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+      - '.github/**'
+
+jobs:
+  auto-tag:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0  # Récupère tout l'historique pour les tags
+    
+    - name: Get latest tag
+      id: get_tag
+      run: |
+        # Récupère le dernier tag v0.x.x
+        LATEST_TAG=$(git tag -l "v0.*.*" | sort -V | tail -n 1)
+        
+        if [ -z "$LATEST_TAG" ]; then
+          # Pas de tag existant, on commence à v0.1.0
+          NEW_TAG="v0.1.0"
+        else
+          # Extrait les numéros de version
+          VERSION=${LATEST_TAG#v}
+          MAJOR=$(echo $VERSION | cut -d. -f1)
+          MINOR=$(echo $VERSION | cut -d. -f2)
+          PATCH=$(echo $VERSION | cut -d. -f3)
+          
+          # Incrémente le patch
+          NEW_PATCH=$((PATCH + 1))
+          NEW_TAG="v${MAJOR}.${MINOR}.${NEW_PATCH}"
+        fi
+        
+        echo "new_tag=$NEW_TAG" >> $GITHUB_OUTPUT
+        echo "Nouveau tag: $NEW_TAG"
+    
+    - name: Create and push tag
+      run: |
+        git config user.name "GitHub Actions"
+        git config user.email "actions@github.com"
+        git tag ${{ steps.get_tag.outputs.new_tag }}
+        git push origin ${{ steps.get_tag.outputs.new_tag }}
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/build-release.yml

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+name: Build and Release DMG
+
+on:
+  push:
+    tags:
+      - 'v0.*.*'  # Accepte v0.1.0, v0.2.5, etc.
+      - 'v[1-9].*.*'  # Accepte aussi v1.0.0+ pour le futur
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: macos-14
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    
+    - name: Setup Xcode
+      uses: maxim-lobanov/setup-xcode@v1
+      with:
+        xcode-version: '15.2'
+    
+    - name: Resolve Swift Package Dependencies
+      run: |
+        xcodebuild -resolvePackageDependencies \
+          -scheme iDither
+    
+    - name: Build app
+      run: |
+        xcodebuild -scheme iDither \
+          -configuration Release \
+          -derivedDataPath ./build \
+          -destination 'platform=macOS' \
+          clean build
+    
+    - name: Create DMG
+      run: |
+        # Trouve l'app compilée
+        APP_PATH=$(find ./build/Build/Products/Release -name "iDither.app" -type d | head -n 1)
+        
+        if [ -z "$APP_PATH" ]; then
+          echo "❌ App non trouvée dans le build"
+          exit 1
+        fi
+        
+        echo "✅ App trouvée : $APP_PATH"
+        
+        # Crée un dossier temporaire pour le DMG
+        mkdir -p dmg_content
+        cp -R "$APP_PATH" dmg_content/
+        
+        # Ajoute un lien vers /Applications (pratique pour l'installation)
+        ln -s /Applications dmg_content/Applications
+        
+        # Crée le DMG
+        hdiutil create -volname "iDither" \
+          -srcfolder dmg_content \
+          -ov -format UDZO \
+          iDither-${{ github.ref_name }}.dmg
+        
+        echo "✅ DMG créé : iDither-${{ github.ref_name }}.dmg"
+    
+    - name: Create Release
+      uses: softprops/action-gh-release@v1
+      with:
+        files: iDither-*.dmg
+        draft: false
+        prerelease: ${{ startsWith(github.ref, 'refs/tags/v0.') }}  # v0.x.x = prerelease
+        body: |
+          ## iDither ${{ github.ref_name }}
+          
+          Application macOS de dithering en temps réel.
+          
+          ### Installation
+          1. Téléchargez le fichier `.dmg`
+          2. Ouvrez-le et glissez iDither vers Applications
+          3. Au premier lancement, faites clic droit → Ouvrir (sécurité macOS)
+          
+          ---
+          Build automatique via GitHub Actions
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}