fix: delete agent 500 error + dynamic personality + deployment guide

- Fix delete agent 500: clean up FK records (agent_llm_logs, permissions,
  schedules, executions, team_members) and unbind goals/tasks before delete
- Remove hardcoded personality templates in Android, replace with dynamic
  system prompt generation from name + description
- Set promptSectionsEnabled=false to bypass PromptComposer for personality
- Add Tencent Cloud Linux deployment guide (Docker Compose)
- Accumulated backend service updates, frontend UI fixes, Android app changes

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/deploy.yml

@@ -0,0 +1,157 @@
+name: CD / Deploy
+
+on:
+  push:
+    branches: [main]
+    paths-ignore:
+      - "docs/**"
+      - "*.md"
+  workflow_dispatch:
+    inputs:
+      environment:
+        description: "部署环境"
+        required: true
+        type: choice
+        default: staging
+        options:
+          - staging
+          - production
+
+env:
+  REGISTRY: ghcr.io
+  BACKEND_IMAGE: ${{ github.repository }}/backend
+  FRONTEND_IMAGE: ${{ github.repository }}/frontend
+
+jobs:
+  # ============================================================
+  # Build & Push Docker images
+  # ============================================================
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        run: |
+          echo "sha_short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+
+      - name: Build and push backend
+        uses: docker/build-push-action@v6
+        with:
+          context: ./backend
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE }}:${{ steps.meta.outputs.sha_short }}
+            ${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE }}:latest
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Build and push frontend
+        uses: docker/build-push-action@v6
+        with:
+          context: ./frontend
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.FRONTEND_IMAGE }}:${{ steps.meta.outputs.sha_short }}
+            ${{ env.REGISTRY }}/${{ env.FRONTEND_IMAGE }}:latest
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+  # ============================================================
+  # Deploy to staging (auto on push to main)
+  # ============================================================
+  deploy-staging:
+    needs: build-and-push
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push' || github.event.inputs.environment == 'staging'
+    environment: staging
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Deploy to staging server
+        uses: appleboy/ssh-action@v1
+        with:
+          host: ${{ secrets.STAGING_HOST }}
+          username: ${{ secrets.STAGING_USER }}
+          key: ${{ secrets.STAGING_SSH_KEY }}
+          script: |
+            cd /opt/aiagent
+            docker-compose -f docker-compose.staging.yml pull
+            docker-compose -f docker-compose.staging.yml up -d --remove-orphans
+            docker image prune -f
+
+      - name: Health check (staging)
+        run: |
+          sleep 10
+          for i in 1 2 3 4 5; do
+            curl -sf ${{ secrets.STAGING_URL }}/health && exit 0
+            echo "Health check attempt $i failed, retrying..."
+            sleep 5
+          done
+          echo "Health check failed after 5 attempts"
+          exit 1
+
+  # ============================================================
+  # Deploy to production (manual trigger only)
+  # ============================================================
+  deploy-production:
+    needs: build-and-push
+    runs-on: ubuntu-latest
+    if: github.event.inputs.environment == 'production'
+    environment: production
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Deploy to production server
+        uses: appleboy/ssh-action@v1
+        with:
+          host: ${{ secrets.PROD_HOST }}
+          username: ${{ secrets.PROD_USER }}
+          key: ${{ secrets.PROD_SSH_KEY }}
+          script: |
+            cd /opt/aiagent
+            bash upgrade.sh
+
+      - name: Health check (production)
+        run: |
+          sleep 15
+          for i in 1 2 3 4 5; do
+            curl -sf ${{ secrets.PROD_URL }}/health && exit 0
+            echo "Health check attempt $i failed, retrying..."
+            sleep 5
+          done
+          echo "Health check failed after 5 attempts"
+          exit 1
+
+  # ============================================================
+  # Notify result
+  # ============================================================
+  notify:
+    needs: [deploy-staging, deploy-production]
+    if: always()
+    runs-on: ubuntu-latest
+    steps:
+      - name: Summary
+        run: |
+          echo "## Deploy Summary" >> $GITHUB_STEP_SUMMARY
+          echo "- **Branch**: ${{ github.ref_name }}" >> $GITHUB_STEP_SUMMARY
+          echo "- **Commit**: ${{ github.sha }}" >> $GITHUB_STEP_SUMMARY
+          echo "- **Staging**: ${{ needs.deploy-staging.result }}" >> $GITHUB_STEP_SUMMARY
+          echo "- **Production**: ${{ needs.deploy-production.result }}" >> $GITHUB_STEP_SUMMARY