Add GitHub Actions deployment workflow

- Add deployment workflow with test, build, and deploy jobs
- Add testing workflow for PRs
- Add deployment scripts (deploy, healthcheck, rollback)
- Add systemd service configuration
- Update Makefile with CI/CD targets
- Add comprehensive deployment documentation

.github/workflows/test.yml

@@ -0,0 +1,44 @@
+name: Test CV Site
+
+on:
+  pull_request:
+    branches: [main, develop]
+  push:
+    branches: [main, develop]
+
+jobs:
+  test:
+    name: Test on Go ${{ matrix.go-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go-version: ['1.24', '1.25']
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go-version }}
+          cache: true
+
+      - name: Install dependencies
+        run: go mod download
+
+      - name: Run linter
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: latest
+          skip-cache: false
+          skip-pkg-cache: false
+          skip-build-cache: false
+
+      - name: Run tests
+        run: |
+          go test -v -race -coverprofile=coverage.txt ./...
+
+      - name: Build
+        run: |
+          go build -v .