feat: 更新后端平台模块、数据库、Compute引擎及多项配置文档

- 更新 backend 平台 API、platform_store、session 数据库模块
- 新增 backend SQL 初始化脚本
- 更新 compute 引擎适配器及 README
- 更新 Docker 部署配置（app/compute）
- 更新前端入口、环境类型声明及 README
- 新增 docs/menu-functional-requirements.md 菜单功能需求文档
- 更新多项项目文档

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

docker/app/docker-compose.yml

@@ -32,7 +32,7 @@ services:
       APP_ENV: ${APP_ENV:-prod}
       APP_NAME: ${APP_NAME:-YG Fine-Tune Platform API}
       MODELTF_ROUTE_PREFIX: ${MODELTF_ROUTE_PREFIX:-/modelTF}
-      DATABASE_URL: ${DATABASE_URL:-postgresql+asyncpg://yg_ft:change_me@postgres:5432/yg_ft}
+      DATABASE_URL: ${DATABASE_URL:-postgresql+psycopg://yg_ft:change_me@postgres:5432/yg_ft}
       REDIS_URL: ${REDIS_URL:-redis://redis:6379/0}
       USE_BUILTIN_POSTGRES: ${USE_BUILTIN_POSTGRES:-true}
       USE_BUILTIN_REDIS: ${USE_BUILTIN_REDIS:-true}
@@ -45,6 +45,7 @@ services:
       COMPUTE_API_BASE_URL: ${COMPUTE_API_BASE_URL:-http://compute-api:9100}
       COMPUTE_SERVICE_TOKEN: ${COMPUTE_SERVICE_TOKEN:-change_me}
       FILE_GATEWAY_BASE_URL: ${FILE_GATEWAY_BASE_URL:-http://compute-api:9101}
+      COMPUTE_MODE: ${COMPUTE_MODE:-real}
       COMPUTE_STATUS_SYNC_MODE: ${COMPUTE_STATUS_SYNC_MODE:-polling}
       COMPUTE_POLL_INTERVAL_SECONDS: ${COMPUTE_POLL_INTERVAL_SECONDS:-10}
       COMPUTE_POLL_BATCH_SIZE: ${COMPUTE_POLL_BATCH_SIZE:-100}