ci: Gitea Actions 자동배포 워크플로우 구성 (#12)

- .gitea/workflows/deploy.yml: main 브랜치 push 시 빌드 + 배포
- Maven 빌드 (Frontend 포함) + JAR 배포 경로: /deploy/snp-sync-batch/

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -0,0 +1,49 @@
+name: Build and Deploy SNP Sync Batch
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    container:
+      image: maven:3.9-eclipse-temurin-17
+    steps:
+      - name: Checkout
+        run: |
+          git clone --depth=1 --branch=${GITHUB_REF_NAME} \
+            http://gitea:3000/${GITHUB_REPOSITORY}.git .
+
+      - name: Configure Maven settings
+        run: |
+          mkdir -p ~/.m2
+          cat > ~/.m2/settings.xml << 'SETTINGS'
+          <settings>
+            <mirrors>
+              <mirror>
+                <id>nexus</id>
+                <mirrorOf>*</mirrorOf>
+                <url>https://nexus.gc-si.dev/repository/maven-public/</url>
+              </mirror>
+            </mirrors>
+            <servers>
+              <server>
+                <id>nexus</id>
+                <username>${{ secrets.NEXUS_USERNAME }}</username>
+                <password>${{ secrets.NEXUS_PASSWORD }}</password>
+              </server>
+            </servers>
+          </settings>
+          SETTINGS
+
+      - name: Build
+        run: mvn clean package -DskipTests -B
+
+      - name: Deploy
+        run: |
+          cp target/snp-sync-batch-*.jar /deploy/snp-sync-batch/app.jar
+          date '+%Y-%m-%d %H:%M:%S' > /deploy/snp-sync-batch/.deploy-trigger
+          echo "Deployed at $(cat /deploy/snp-sync-batch/.deploy-trigger)"
+          ls -la /deploy/snp-sync-batch/