feat(identity): 收敛 AI Gateway 统一认证入口

Web 登录页合并为单一统一认证入口，未指定上下文时由认证中心在登录后决策。继续接受旧客户端显式传入 platform 或 tenant，并保持回调上下文及 tenant_hint 的绑定校验。同步更新 OpenAPI 产物。\n\n验证：Go 全量测试与 go vet 通过；Web lint、141 项 Vitest 和生产构建通过；本地 platform.admin 登录及管理工作台访问通过。

apps/web/src/App.tsx

@@ -135,7 +135,6 @@ import {
   loadOIDCRuntimeConfiguration,
   startOIDCLogin,
   startOIDCLogout,
-  type OIDCContextType,
 } from './lib/oidc';
 import { runTask, type RunTaskOptions } from './lib/run-task';
 import { AdminPage } from './pages/AdminPage';
@@ -281,7 +280,6 @@ export function App() {
   const [error, setError] = useState('');
   const [oidcCallbackError, setOIDCCallbackError] = useState(() => consumeOIDCCallbackError());
   const [oidcEnabled, setOIDCEnabled] = useState(false);
-  const [oidcContextTypes, setOIDCContextTypes] = useState<OIDCContextType[]>([]);
   const currentCredentialRef = useRef(token);
   const resetAuthenticatedSessionRef = useRef<() => void>(() => undefined);
   currentCredentialRef.current = token;
@@ -340,7 +338,6 @@ export function App() {
       if (cancelled) return;
       const identityEnabled = configuration.enabled && configuration.oidcLogin;
       setOIDCEnabled(identityEnabled);
-      setOIDCContextTypes(configuration.contextTypes);
       if (force && currentCredentialRef.current === OIDC_BROWSER_SESSION_CREDENTIAL) {
         await reconcileOIDCBrowserSessionAfterRuntimeChange({
           credential: currentCredentialRef.current,
@@ -1307,14 +1304,11 @@ export function App() {
     navigatePath('/');
   }
 
-  function loginWithOIDC(
-    contextType: OIDCContextType =
-      oidcContextTypes.includes('platform') ? 'platform' : 'tenant',
-  ) {
+  function loginWithOIDC() {
     setState('loading');
     setError('');
     setOIDCCallbackError(null);
-    void startOIDCLogin(contextType).catch((err) => {
+    void startOIDCLogin().catch((err) => {
       setState('error');
       setError(err instanceof Error ? err.message : '统一认证登录失败');
     });
@@ -1327,13 +1321,12 @@ export function App() {
       const configuration = await loadOIDCRuntimeConfiguration(true);
       const identityEnabled = configuration.enabled && configuration.oidcLogin;
       setOIDCEnabled(identityEnabled);
-      setOIDCContextTypes(configuration.contextTypes);
       if (
         loginEntryAction(identityEnabled) === 'oidc' &&
         configuration.contextTypes.length === 1
       ) {
         setOIDCCallbackError(null);
-        await startOIDCLogin(configuration.contextTypes[0], configuration);
+        await startOIDCLogin(undefined, configuration);
         return;
       }
       setState('idle');
@@ -1492,7 +1485,6 @@ export function App() {
             onSubmitLogin={submitLogin}
             onSubmitRegister={submitRegister}
             oidcEnabled={oidcEnabled}
-            oidcContextTypes={oidcContextTypes}
             onOIDCLogin={loginWithOIDC}
           />
         )
@@ -1565,7 +1557,6 @@ export function App() {
             onSubmitLogin={submitLogin}
             onSubmitRegister={submitRegister}
             oidcEnabled={oidcEnabled}
-            oidcContextTypes={oidcContextTypes}
             onOIDCLogin={loginWithOIDC}
           />
         )

apps/web/src/components/AuthPanel.test.tsx

@@ -15,16 +15,16 @@ const baseProps = {
   onSubmitExternalToken: vi.fn(),
   onSubmitLogin: vi.fn(),
   onSubmitRegister: vi.fn(),
-  oidcContextTypes: ['platform', 'tenant'] as const,
   onOIDCLogin: vi.fn(),
 };
 
 describe('AuthPanel', () => {
-  it('shows explicit platform and tenant entries when OIDC is enabled', () => {
+  it('shows one unified authentication entry when OIDC is enabled', () => {
     const html = renderToStaticMarkup(<AuthPanel {...baseProps} oidcEnabled />);
 
-    expect(html).toContain('使用平台账号登录');
-    expect(html).toContain('使用租户账号登录');
+    expect(html).toContain('使用统一认证登录');
+    expect(html).not.toContain('使用平台账号登录');
+    expect(html).not.toContain('使用租户账号登录');
     expect(html).not.toContain('用户名或邮箱');
     expect(html).not.toContain('注册账号');
     expect(html).not.toContain('外部 Token');

apps/web/src/components/AuthPanel.tsx

@@ -2,7 +2,6 @@ import type { FormEvent } from 'react';
 import { LogIn, UserPlus } from 'lucide-react';
 import { Button, Card, CardContent, CardHeader, CardTitle, Input, Label, PasswordInput, Tabs } from './ui';
 import type { AuthMode, LoadState, LoginForm, RegisterForm } from '../types';
-import type { OIDCContextType } from '../lib/oidc';
 
 const tabs = [
   { value: 'login', label: '账号登录' },
@@ -24,8 +23,7 @@ export function AuthPanel(props: {
   onSubmitLogin: (event: FormEvent<HTMLFormElement>) => void;
   onSubmitRegister: (event: FormEvent<HTMLFormElement>) => void;
   oidcEnabled: boolean;
-  oidcContextTypes: readonly OIDCContextType[];
-  onOIDCLogin: (contextType: OIDCContextType) => void;
+  onOIDCLogin: () => void;
 }) {
   return (
     <section className="authShell" aria-label="登录">
@@ -39,26 +37,14 @@ export function AuthPanel(props: {
         <CardContent className="authContent">
           {props.oidcEnabled ? (
             <div className="formGrid">
-              {props.oidcContextTypes.includes('platform') && (
-                <Button
-                  type="button"
-                  disabled={props.state === 'loading'}
-                  onClick={() => props.onOIDCLogin('platform')}
-                >
-                  <LogIn size={15} />
-                  使用平台账号登录
-                </Button>
-              )}
-              {props.oidcContextTypes.includes('tenant') && (
-                <Button
-                  type="button"
-                  disabled={props.state === 'loading'}
-                  onClick={() => props.onOIDCLogin('tenant')}
-                >
-                  <LogIn size={15} />
-                  使用租户账号登录
-                </Button>
-              )}
+              <Button
+                type="button"
+                disabled={props.state === 'loading'}
+                onClick={props.onOIDCLogin}
+              >
+                <LogIn size={15} />
+                使用统一认证登录
+              </Button>
             </div>
           ) : (
             <>

apps/web/src/lib/oidc.test.ts

@@ -7,7 +7,7 @@ describe('OIDC BFF navigation', () => {
     vi.resetModules();
   });
 
-  it('binds platform context and returnTo at the Gateway login endpoint', async () => {
+  it('lets the authentication center select context and binds returnTo', async () => {
     vi.stubEnv('VITE_GATEWAY_API_BASE_URL', 'https://gateway.example.com/gateway-api');
 		vi.stubGlobal('fetch', vi.fn().mockResolvedValue({
 			ok: true,
@@ -18,11 +18,11 @@ describe('OIDC BFF navigation', () => {
       location: { pathname: '/workspace', search: '?tab=wallet', hash: '#balance', assign },
     });
     const { startOIDCLogin } = await import('./oidc');
-    await startOIDCLogin('platform');
+    await startOIDCLogin();
     const target = new URL(String(assign.mock.calls[0]?.[0]));
     expect(target.pathname).toBe('/gateway-api/api/v1/auth/oidc/login');
     expect(target.searchParams.get('returnTo')).toBe('/workspace?tab=wallet#balance');
-    expect(target.searchParams.get('contextType')).toBe('platform');
+    expect(target.searchParams.has('contextType')).toBe(false);
     expect(target.searchParams.has('client_id')).toBe(false);
     expect(target.searchParams.has('code_challenge')).toBe(false);
   });

apps/web/src/lib/oidc.ts

@@ -92,7 +92,7 @@ export async function loadOIDCRuntimeConfiguration(force = false): Promise<OIDCR
 }
 
 export async function startOIDCLogin(
-  contextType: OIDCContextType,
+  contextType?: OIDCContextType,
   configuration?: OIDCRuntimeConfiguration,
 ) {
   configuration ??= await loadOIDCRuntimeConfiguration(true);
@@ -100,12 +100,12 @@ export async function startOIDCLogin(
     !configuration.enabled ||
     !configuration.oidcLogin ||
     !configuration.loginUrl ||
-    !configuration.contextTypes.includes(contextType)
+    (contextType !== undefined && !configuration.contextTypes.includes(contextType))
   ) throw new Error('统一认证登录上下文未配置');
   const returnTo = `${window.location.pathname}${window.location.search}${window.location.hash}` || '/';
   const loginURL = new URL(identityEndpointURL(configuration.loginUrl), window.location.origin);
   loginURL.searchParams.set('returnTo', returnTo.startsWith('/') ? returnTo : '/');
-  loginURL.searchParams.set('contextType', contextType);
+  if (contextType !== undefined) loginURL.searchParams.set('contextType', contextType);
   window.location.assign(loginURL.toString());
 }