feat(docker): 测试环境 compose 添加自动迁移 + healthcheck

- api 服务启动时自动执行 alembic upgrade head，再启动 uvicorn
- api 添加 healthcheck（/health 端点检查）
- scheduler 添加 healthcheck（导入检查）

python-api/docker-compose.test.yml

@@ -54,9 +54,17 @@ services:
         condition: service_healthy
       redis:
         condition: service_healthy
+    command: >
+      sh -c "alembic upgrade head && uvicorn app.main:app --host 0.0.0.0 --port 8000"
     networks:
       - meijiaka-zy
     restart: unless-stopped
+    healthcheck:
+      test: ["CMD-SHELL", "python -c \"import urllib.request; urllib.request.urlopen('http://localhost:8000/health')\""]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
 
   scheduler:
     build:
@@ -73,6 +81,12 @@ services:
     networks:
       - meijiaka-zy
     restart: unless-stopped
+    healthcheck:
+      test: ["CMD-SHELL", "python -c \"import asyncio; from app.scheduler.engine import AsyncEngine; print('scheduler ok')\""]
+      interval: 60s
+      timeout: 10s
+      retries: 3
+      start_period: 30s
 
 networks:
   meijiaka-zy: