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>

docker-compose.yml

@@ -0,0 +1,42 @@
+version: "3.8"
+
+services:
+  nginx:
+    image: nginx:1.27-alpine
+    container_name: nginx
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ./nginx/conf.d:/etc/nginx/conf.d
+      - ./nginx/html:/usr/share/nginx/html
+      - ./nginx/logs:/var/log/nginx
+    networks:
+      - app-network
+    depends_on:
+      - mysql
+    restart: unless-stopped
+
+  mysql:
+    image: mysql:8.0
+    container_name: mysql
+    ports:
+      - "3306:3306"
+    environment:
+      MYSQL_ROOT_PASSWORD: root123
+      MYSQL_DATABASE: mydb
+      MYSQL_USER: app
+      MYSQL_PASSWORD: app123
+    volumes:
+      - mysql-data:/var/lib/mysql
+      - ./mysql/init:/docker-entrypoint-initdb.d
+    networks:
+      - app-network
+    restart: unless-stopped
+
+volumes:
+  mysql-data:
+
+networks:
+  app-network:
+    driver: bridge