docs: 交付文档、维护指引与端到端回归

补齐 README、开发计划、维护交接与 E2E 用例，执行最终验收。

e2e/src/pages/human-agents.page.ts

@@ -0,0 +1,41 @@
+import { expect, type Locator, type Page } from '@playwright/test'
+import { step } from '../support/step'
+
+export interface NewTeamMember {
+  name: string
+  email: string
+  password: string
+  role: 'Admin' | 'Agent'
+}
+
+/** /human-agents — people, teams and roles. */
+export class HumanAgentsPage {
+  readonly page: Page
+
+  constructor(page: Page) {
+    this.page = page
+  }
+
+  async goto(): Promise<void> {
+    await this.page.goto('/human-agents')
+    await expect(this.page.getByRole('main').getByRole('heading', { name: 'Human Agents', exact: true })).toBeVisible()
+  }
+
+  async invite(member: NewTeamMember): Promise<void> {
+    await step(`Add ${member.email} as ${member.role}`, async () => {
+      await this.page.getByRole('button', { name: 'Invite agent' }).click()
+      const dialog = this.page.getByRole('dialog', { name: 'Create New User' })
+      await dialog.getByLabel('Full Name').fill(member.name)
+      await dialog.getByLabel('Email').fill(member.email)
+      await dialog.getByLabel('Role').selectOption({ label: member.role })
+      await dialog.getByLabel('Password', { exact: true }).fill(member.password)
+      await dialog.getByLabel('Confirm Password').fill(member.password)
+      await dialog.getByRole('button', { name: 'Create', exact: true }).click()
+      await expect(dialog).toBeHidden()
+    })
+  }
+
+  member(email: string): Locator {
+    return this.page.getByRole('main').getByText(email)
+  }
+}