feat: initialize ERP base platform (extracted from HMS)

- Stripped 11 business crates (health, ai, dialysis, plugins)
- Cleaned AppState, AppConfig, main.rs from business coupling
- Reduced migrations from 169 to 53 (base-only)
- Removed health_provider trait from erp-core
- Removed business integration tests
- Removed gateway rate limiting middleware
- Base capabilities: auth, RBAC, JWT, config, workflow, message, plugin, audit, crypto, RLS, multi-tenant

Cargo check: OK
Cargo test: OK

docker/docker-compose.cloud.yml

@@ -0,0 +1,40 @@
+# 云端部署配置 — 仅启动应用容器，PG/Redis 使用宿主机已安装的服务
+# 使用方式: docker compose -f docker/docker-compose.cloud.yml up -d
+#
+# 前置条件:
+#   1. 宿主机已安装 PostgreSQL 16 + Redis 7
+#   2. PostgreSQL 已创建数据库和用户
+#   3. 复制 .env.production.example 为 .env.production 并填写实际值
+#   4. OpenResty 反代配置:
+#      - /api/* → http://localhost:3000
+#      - /uploads/* → http://localhost:3000
+#      - / → 前端静态文件 (挂载 /opt/hms/static/)
+
+services:
+  app:
+    build:
+      context: ..
+      dockerfile: Dockerfile
+    container_name: hms-server
+    restart: unless-stopped
+    network_mode: host
+    env_file:
+      - .env.production
+    volumes:
+      - ../uploads:/app/uploads
+      - ../config:/app/config:ro
+      - ../static:/app/static
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3000/api/v1/health"]
+      interval: 30s
+      timeout: 5s
+      start_period: 60s
+      retries: 3
+    deploy:
+      resources:
+        limits:
+          cpus: "2"
+          memory: 1024M
+        reservations:
+          cpus: "0.5"
+          memory: 256M