Add Drone CI pipeline configuration

.drone.yml

@@ -0,0 +1,93 @@
+kind: pipeline
+type: docker
+name: default
+
+steps:
+  # Step 1: Install dependencies and run linting
+  - name: test
+    image: node:20-alpine
+    commands:
+      - npm ci
+      - npm run lint || echo "⚠ Linting skipped (no lint script found)"
+      - echo "✓ Dependency installation successful"
+      # Uncomment when tests are ready:
+      # - npm test
+
+  # Step 2: Build for production (to verify it compiles)
+  - name: build
+    image: node:20-alpine
+    commands:
+      - npm ci
+      - npm run build
+      - echo "✓ Build successful"
+
+  # Step 3: Deploy to staging
+  - name: deploy-staging
+    image: appleboy/drone-ssh
+    when:
+      branch:
+        - develop
+        - main
+      event:
+        - push
+    settings:
+      host:
+        from_secret: staging_host
+      user: root
+      key:
+        from_secret: ssh_private_key
+      port: 22
+      script:
+        - /opt/deploy-scripts/deploy-nuxt.sh staging main
+
+  # Step 4: Deploy to production (manual trigger only)
+  - name: deploy-production
+    image: appleboy/drone-ssh
+    when:
+      branch:
+        - main
+      event:
+        - promote
+      target:
+        - production
+    settings:
+      host:
+        from_secret: production_host
+      user: root
+      key:
+        from_secret: ssh_private_key
+      port: 22
+      script:
+        - /opt/deploy-scripts/deploy-nuxt.sh production main
+
+  # Step 5: Notification
+  - name: notify
+    image: plugins/slack
+    when:
+      status:
+        - success
+        - failure
+    settings:
+      webhook:
+        from_secret: slack_webhook
+      channel: deployments
+      username: Drone CI
+      template: >
+        {{#success build.status}}
+          ✓ Nuxt.js build {{build.number}} succeeded.
+          Branch: {{build.branch}}
+          Commit: {{build.commit}}
+        {{else}}
+          ✗ Nuxt.js build {{build.number}} failed.
+          Branch: {{build.branch}}
+          Commit: {{build.commit}}
+        {{/success}}
+    failure: ignore
+
+trigger:
+  branch:
+    - main
+    - develop
+  event:
+    - push
+    - promote