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/flows/patient-journey.spec.ts

@@ -0,0 +1,53 @@
+// apps/web/e2e/flows/patient-journey.spec.ts
+import { test, expect } from '../fixtures/auth.fixture';
+import { PatientListPage } from '../pages/patient-list.page';
+import { PatientDetailPage } from '../pages/patient-detail.page';
+import { makePatient, makeDoctor } from '../fixtures/test-data';
+
+test.describe('@flow 患者全流程', () => {
+  const cleanup: Array<() => Promise<void>> = [];
+
+  test.afterEach(async () => {
+    for (const fn of cleanup.reverse()) {
+      await fn().catch(() => {});
+    }
+    cleanup.length = 0;
+  });
+
+  test('创建患者 → 查看详情 → 编辑 → 分配医生', async ({ api, authenticatedPage: page }) => {
+    const doctorData = makeDoctor();
+    const doctor = await api.createDoctor(doctorData);
+    cleanup.push(() => api.deleteDoctor(doctor.id, doctor.version));
+
+    const listPage = new PatientListPage(page);
+    await listPage.goto();
+
+    const patientData = makePatient();
+    await listPage.clickCreate();
+    await listPage.fillCreateForm({
+      name: patientData.name,
+    });
+    await listPage.submitForm();
+
+    await expect(async () => {
+      const found = await listPage.hasPatientInTable(patientData.name);
+      expect(found).toBeTruthy();
+    }).toPass({ timeout: 10000 });
+
+    const patient = await api.createPatient({ ...patientData, name: `${patientData.name}_detail` });
+    cleanup.push(() => api.deletePatient(patient.id, patient.version));
+
+    const detailPage = new PatientDetailPage(page);
+    await detailPage.goto(patient.id);
+
+    const name = await detailPage.getPatientName();
+    expect(name.length).toBeGreaterThan(0);
+
+    const assignBtn = page.locator('button:has-text("分配医生")');
+    if (await assignBtn.isVisible().catch(() => false)) {
+      await detailPage.clickAssignDoctor();
+      await detailPage.selectDoctor(doctorData.name);
+      await detailPage.confirmAssign();
+    }
+  });
+});