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

apps/web/e2e/check-readiness.ts

@@ -0,0 +1,22 @@
+// apps/web/e2e/check-readiness.ts
+import type { FullConfig } from '@playwright/test';
+
+async function check(url: string, label: string): Promise<void> {
+  for (let i = 0; i < 5; i++) {
+    try {
+      const res = await fetch(url);
+      if (res.ok) return;
+    } catch { /* retry */ }
+    console.log(`⏳ ${label} 未就绪，等待重试 (${i + 1}/5)...`);
+    await new Promise((r) => setTimeout(r, 2000));
+  }
+  throw new Error(`❌ ${label} 未就绪: ${url}。请确认后端服务已启动 (cd crates/erp-server && cargo run)`);
+}
+
+export default async function globalSetup(_config: FullConfig) {
+  const apiBase = process.env.E2E_API_URL || 'http://localhost:3000';
+  const webBase = process.env.E2E_BASE_URL || 'http://localhost:5174';
+  await check(`${apiBase}/api/v1/health`, '后端 API');
+  await check(webBase, '前端 SPA');
+  console.log('✅ E2E 环境就绪');
+}