Add initial project configuration and setup for Reference Board Viewer application. Include EditorConfig for consistent coding styles, pre-commit hooks for linting and formatting, Docker Compose for local development with PostgreSQL and MinIO, and a Nix flake for development environment management. Establish CI/CD pipeline for automated testing and deployment.

.github/workflows/ci.yml

@@ -0,0 +1,181 @@
+name: CI/CD Pipeline
+
+on:
+  push:
+    branches: [main, develop, '**']
+  pull_request:
+    branches: [main, develop]
+
+jobs:
+  backend-tests:
+    name: Backend Tests
+    runs-on: ubuntu-latest
+    
+    services:
+      postgres:
+        image: postgres:16
+        env:
+          POSTGRES_DB: webref_test
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Install Nix
+        uses: cachix/install-nix-action@v27
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      
+      - name: Setup Python dependencies
+        run: |
+          cd backend
+          python -m pip install --upgrade pip
+          pip install -e ".[dev]"
+      
+      - name: Run Ruff linter
+        run: |
+          cd backend
+          ruff check app/
+      
+      - name: Run Ruff formatter check
+        run: |
+          cd backend
+          ruff format --check app/
+      
+      - name: Run tests with coverage
+        env:
+          DATABASE_URL: postgresql://postgres:postgres@localhost:5432/webref_test
+        run: |
+          cd backend
+          pytest --cov=app --cov-report=xml --cov-report=term
+      
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          file: ./backend/coverage.xml
+          flags: backend
+          name: backend-coverage
+
+  frontend-tests:
+    name: Frontend Tests
+    runs-on: ubuntu-latest
+    
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+      
+      - name: Install dependencies
+        run: |
+          cd frontend
+          npm ci
+      
+      - name: Run ESLint
+        run: |
+          cd frontend
+          npm run lint
+      
+      - name: Run Prettier check
+        run: |
+          cd frontend
+          npx prettier --check .
+      
+      - name: Run Svelte check
+        run: |
+          cd frontend
+          npm run check
+      
+      - name: Run tests with coverage
+        run: |
+          cd frontend
+          npm run test:coverage
+      
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          file: ./frontend/coverage/coverage-final.json
+          flags: frontend
+          name: frontend-coverage
+
+  integration-tests:
+    name: Integration Tests
+    runs-on: ubuntu-latest
+    needs: [backend-tests, frontend-tests]
+    
+    services:
+      postgres:
+        image: postgres:16
+        env:
+          POSTGRES_DB: webref_test
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+      
+      minio:
+        image: minio/minio
+        env:
+          MINIO_ROOT_USER: minioadmin
+          MINIO_ROOT_PASSWORD: minioadmin
+        ports:
+          - 9000:9000
+        options: >-
+          --health-cmd "curl -f http://localhost:9000/minio/health/live"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+    
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Install Nix
+        uses: cachix/install-nix-action@v27
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      
+      - name: Run integration tests
+        env:
+          DATABASE_URL: postgresql://postgres:postgres@localhost:5432/webref_test
+          MINIO_ENDPOINT: localhost:9000
+          MINIO_ACCESS_KEY: minioadmin
+          MINIO_SECRET_KEY: minioadmin
+        run: |
+          cd backend
+          pytest tests/integration/
+
+  nix-build:
+    name: Nix Build Check
+    runs-on: ubuntu-latest
+    
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Install Nix
+        uses: cachix/install-nix-action@v27
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      
+      - name: Check flake
+        run: nix flake check
+      
+      - name: Build dev shell
+        run: nix develop --command echo "Dev shell OK"
+