Add V2 local dev compose

ai_knowledge_base_v2/docker-compose.dev.yml

@@ -0,0 +1,54 @@
+services:
+  mysql:
+    image: mysql:8.4
+    container_name: ai_kb_v2_mysql
+    environment:
+      MYSQL_ROOT_PASSWORD: rootpass
+      MYSQL_DATABASE: ai_knowledge_base_v2
+      MYSQL_USER: ai_kb
+      MYSQL_PASSWORD: ai_kb
+      TZ: Asia/Shanghai
+    command:
+      - --character-set-server=utf8mb4
+      - --collation-server=utf8mb4_unicode_ci
+    ports:
+      - "3307:3306"
+    volumes:
+      - ai_kb_v2_mysql_data:/var/lib/mysql
+    healthcheck:
+      test: ["CMD-SHELL", "mysqladmin ping -h 127.0.0.1 -uai_kb -pai_kb --silent"]
+      interval: 5s
+      timeout: 5s
+      retries: 20
+
+  backend:
+    build:
+      context: ./apps/backend
+    container_name: ai_kb_v2_backend
+    environment:
+      APP_ENV: docker
+      DEBUG: "true"
+      DATABASE_URL: mysql+pymysql://ai_kb:ai_kb@mysql:3306/ai_knowledge_base_v2?charset=utf8mb4
+      JWT_SECRET_KEY: local-dev-secret-change-before-production
+      MOCK_SMS_ENABLED: "true"
+      MOCK_SMS_CODE: "123456"
+      AUTO_CREATE_TABLES: "false"
+    ports:
+      - "8100:8100"
+    depends_on:
+      mysql:
+        condition: service_healthy
+
+  user-client:
+    build:
+      context: ./apps/user-client
+    container_name: ai_kb_v2_user_client
+    environment:
+      VITE_API_BASE_URL: http://127.0.0.1:8100/api
+    ports:
+      - "5173:5173"
+    depends_on:
+      - backend
+
+volumes:
+  ai_kb_v2_mysql_data: