ci: 增加前端构建发布流水线

新增 Gitea CI，覆盖 Android OTA 发布与校验、Android Release APK 打包，以及 Web Docker 镜像构建推送。

Made-with: Cursor

.dockerignore

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+node_modules
+.git
+.expo
+dist
+dist-web
+dist-android
+dist-android-update.zip
+android
+screenshots
+*.log

.gitea/workflows/build.yml

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+name: Frontend CI
+
+on:
+  push:
+    branches:
+      - main
+      - master
+      - develop
+      - dev
+  pull_request:
+    branches:
+      - main
+      - master
+  workflow_dispatch:
+    inputs:
+      publish_ota:
+        description: 'Publish Android OTA'
+        required: false
+        default: 'true'
+
+env:
+  REGISTRY: code.littlelan.cn
+  IMAGE_NAME: carrot_bbs/frontend-web
+  OTA_PLATFORM: android
+  OTA_PUBLISH_URL: https://updates.littlelan.cn/admin/publish
+  OTA_MANIFEST_URL: https://updates.littlelan.cn/api/manifest
+
+jobs:
+  ota-android:
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' && (github.event_name != 'workflow_dispatch' || github.event.inputs.publish_ota == 'true')
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: '25.6.1'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Resolve runtime version
+        id: runtime
+        run: |
+          RUNTIME_VERSION="$(node -p "require('./app.json').expo.version")"
+          echo "runtime_version=${RUNTIME_VERSION}" >> "$GITHUB_OUTPUT"
+          echo "Resolved runtimeVersion: ${RUNTIME_VERSION}"
+
+      - name: Export Android update bundle
+        run: |
+          rm -rf dist-android dist-android-update.zip
+          npx expo export --platform android --output-dir dist-android
+          npx expo config --type public --json > dist-android/expoConfig.json
+
+      - name: Archive Android update bundle
+        run: |
+          python - <<'PY'
+          import os
+          import zipfile
+
+          with zipfile.ZipFile('dist-android-update.zip', 'w', zipfile.ZIP_DEFLATED) as zf:
+              for root, _, files in os.walk('dist-android'):
+                  for name in files:
+                      src = os.path.join(root, name)
+                      arc = os.path.relpath(src, 'dist-android')
+                      zf.write(src, arc)
+          PY
+
+      - name: Publish OTA
+        env:
+          OTA_AUTH_TOKEN: ${{ secrets.OTA_AUTH_TOKEN }}
+        run: |
+          test -n "${OTA_AUTH_TOKEN}" || (echo "Missing secret OTA_AUTH_TOKEN" && exit 1)
+          curl -fSs -X POST "${OTA_PUBLISH_URL}?runtimeVersion=${{ steps.runtime.outputs.runtime_version }}&platform=${OTA_PLATFORM}" \
+            -H "Authorization: Bearer ${OTA_AUTH_TOKEN}" \
+            -H "Content-Type: application/zip" \
+            --data-binary @"dist-android-update.zip"
+
+      - name: Verify OTA manifest
+        run: |
+          REMOTE="$(curl -sS "${OTA_MANIFEST_URL}" \
+            -H "expo-platform: ${OTA_PLATFORM}" \
+            -H "expo-runtime-version: ${{ steps.runtime.outputs.runtime_version }}" \
+            -H "expo-protocol-version: 1" \
+            | python -c "import sys, json, re; s=sys.stdin.read(); m=re.search(r'\\{\\\"id\\\":.*\\\"extra\\\":\\{.*\\}\\}', s); j=json.loads(m.group(0)); print(j['launchAsset']['url'].split('/')[-1].split('&')[0])")"
+          LOCAL="$(python -c "import json; m=json.load(open('dist-android/metadata.json')); print(m['fileMetadata']['android']['bundle'].split('/')[-1])")"
+          echo "Remote bundle: ${REMOTE}"
+          echo "Local bundle:  ${LOCAL}"
+          test "${REMOTE}" = "${LOCAL}"
+
+  build-android-apk:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Java
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: '21'
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: '25.6.1'
+          cache: 'npm'
+
+      - name: Set up Android SDK
+        uses: android-actions/setup-android@v3
+
+      - name: Install Android SDK packages
+        run: |
+          yes | sdkmanager --licenses
+          sdkmanager "platform-tools" "platforms;android-35" "build-tools;35.0.0"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build Android release APK
+        run: |
+          cd android
+          chmod +x gradlew
+          ./gradlew clean :app:assembleRelease --no-daemon
+
+      - name: Upload APK artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: carrot-bbs-android-release-apk
+          path: android/app/build/outputs/apk/release/app-release.apk
+
+  build-and-push-web:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Log in to Gitea Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Extract metadata for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile.web
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64
+          provenance: false
+
+      - name: Show image tags
+        run: |
+          echo "Built image tags:"
+          echo "${{ steps.meta.outputs.tags }}"
+          echo "Digest: ${{ steps.meta.outputs.digest }}"
+
+      - name: Summary
+        if: always()
+        run: |
+          echo "## Frontend CI Summary" >> "$GITHUB_STEP_SUMMARY"
+          echo "" >> "$GITHUB_STEP_SUMMARY"
+          echo "**Web image:** ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}" >> "$GITHUB_STEP_SUMMARY"
+          echo "**Tags:**" >> "$GITHUB_STEP_SUMMARY"
+          echo "${{ steps.meta.outputs.tags }}" >> "$GITHUB_STEP_SUMMARY"
+          echo "**Digest:** ${{ steps.meta.outputs.digest }}" >> "$GITHUB_STEP_SUMMARY"

Dockerfile.web

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+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+RUN npm ci
+
+COPY . .
+RUN npx expo export --platform web --output-dir dist-web
+
+FROM nginx:1.27-alpine
+
+COPY --from=builder /app/dist-web /usr/share/nginx/html
+
+EXPOSE 80