diff --git a/apps/ai-game-creator-shell/src-tauri/src/platform_session.rs b/apps/ai-game-creator-shell/src-tauri/src/platform_session.rs
index c76a3deb3..359ad50f5 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/platform_session.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/platform_session.rs
@@ -126,13 +126,12 @@ fn normalize_platform_api_base_url(value: &str) -> Result<String, String> {
     let host = parsed
         .host_str()
         .ok_or_else(|| "陶泥儿服务地址缺少 host".to_string())?;
-    let production = matches!(host, "www.genarrative.world" | "dev.genarrative.world");
     let loopback = host == "localhost"
         || host == "127.0.0.1"
         || host
             .parse::<std::net::IpAddr>()
             .is_ok_and(|ip| ip.is_loopback());
-    if !production && !(cfg!(debug_assertions) && loopback && parsed.scheme() == "http") {
+    if parsed.scheme() == "http" && !(cfg!(debug_assertions) && loopback) {
         return Err("陶泥儿服务地址不在受信任白名单内".to_string());
     }
     Ok(value.to_string())
@@ -342,6 +341,20 @@ mod tests {
         );
     }
 
+    #[test]
+    fn custom_server_selection_accepts_https_origins_and_rejects_plain_http() {
+        assert_eq!(
+            normalize_platform_api_base_url("https://staging.example.com/"),
+            Ok("https://staging.example.com".to_string())
+        );
+        assert_eq!(
+            normalize_platform_api_base_url("http://127.0.0.1:8080/"),
+            Ok("http://127.0.0.1:8080".to_string())
+        );
+        assert!(normalize_platform_api_base_url("http://staging.example.com").is_err());
+        assert!(normalize_platform_api_base_url("https://staging.example.com/api").is_err());
+    }
+
     #[test]
     fn frozen_platform_session_rejects_logout_account_switch_and_token_rotation() {
         let expected = PlatformSessionSnapshot {
diff --git a/apps/ai-game-creator-shell/src/app/AuthenticatedClient.tsx b/apps/ai-game-creator-shell/src/app/AuthenticatedClient.tsx
index 80cfec5b6..d7efba85a 100644
--- a/apps/ai-game-creator-shell/src/app/AuthenticatedClient.tsx
+++ b/apps/ai-game-creator-shell/src/app/AuthenticatedClient.tsx
@@ -20,6 +20,15 @@ import {
   normalizeAuthPhoneInput,
   sendClientPhoneLoginCode,
 } from '../services/clientAuth';
+import {
+  AGC_DEVELOPMENT_API_BASE_URL,
+  AGC_RELEASE_API_BASE_URL,
+  type ClientServerPreset,
+  type ClientServerSelection,
+  getClientServerSelection,
+  normalizeClientServerBaseUrl,
+  setClientServerSelection,
+} from '../services/clientHttp';
 import {
   beginPlatformSessionTransition,
   clearCommittedPlatformSession,
@@ -95,6 +104,46 @@ export function AuthenticatedClient({
   const [loginBusy, setLoginBusy] = useState(false);
   const [codeBusy, setCodeBusy] = useState(false);
   const [codeCooldownSeconds, setCodeCooldownSeconds] = useState(0);
+  const initialServerSelection = getClientServerSelection();
+  const [serverSelection, setServerSelection] = useState<ClientServerSelection>(
+    initialServerSelection,
+  );
+  const [customServerUrl, setCustomServerUrl] = useState(
+    initialServerSelection.customBaseUrl,
+  );
+  const selectedServerAddress =
+    serverSelection.preset === 'release'
+      ? AGC_RELEASE_API_BASE_URL
+      : serverSelection.preset === 'dev'
+        ? AGC_DEVELOPMENT_API_BASE_URL
+        : customServerUrl || '请输入自定义服务器地址';
+
+  function applyServerSelection() {
+    try {
+      const next = setClientServerSelection({
+        preset: serverSelection.preset,
+        customBaseUrl: customServerUrl,
+      });
+      setServerSelection(next);
+      return true;
+    } catch (error) {
+      setLoginStatus(error instanceof Error ? error.message : String(error));
+      return false;
+    }
+  }
+
+  function handleServerPresetChange(preset: ClientServerPreset) {
+    if (preset === 'custom') {
+      setServerSelection((current) => ({ ...current, preset }));
+      return;
+    }
+    const next = setClientServerSelection({
+      preset,
+      customBaseUrl: customServerUrl,
+    });
+    setServerSelection(next);
+    setLoginStatus(`已选择 ${preset} 服务器`);
+  }
 
   useEffect(() => {
     let disposed = false;
@@ -229,6 +278,9 @@ export function AuthenticatedClient({
     if (codeBusy || codeCooldownSeconds > 0) {
       return;
     }
+    if (!applyServerSelection()) {
+      return;
+    }
     const normalizedPhone = normalizeAuthPhoneInput(phone);
     if (!normalizedPhone) {
       setLoginStatus('请输入手机号');
@@ -265,6 +317,9 @@ export function AuthenticatedClient({
       setLoginStatus('请输入密码');
       return;
     }
+    if (!applyServerSelection()) {
+      return;
+    }
     setLoginBusy(true);
     setLoginStatus('正在登录');
     const loginGeneration = beginPlatformSessionTransition();
@@ -324,6 +379,51 @@ export function AuthenticatedClient({
             <h1>登录陶泥儿 GameAgent</h1>
             <p>登录后进入首页和本地项目工作区</p>
           </div>
+          <label>
+            服务器
+            <select
+              aria-label="服务器"
+              value={serverSelection.preset}
+              onChange={(event) =>
+                handleServerPresetChange(
+                  event.currentTarget.value as ClientServerPreset,
+                )
+              }
+            >
+              <option value="release">release</option>
+              <option value="dev">dev</option>
+              <option value="custom">custom</option>
+            </select>
+            <small className="client-auth-server-address">
+              {selectedServerAddress}
+            </small>
+          </label>
+          {serverSelection.preset === 'custom' ? (
+            <label>
+              自定义服务器地址
+              <input
+                aria-label="自定义服务器地址"
+                inputMode="url"
+                placeholder="https://example.com"
+                value={customServerUrl}
+                onChange={(event) =>
+                  setCustomServerUrl(event.currentTarget.value)
+                }
+                onBlur={() => {
+                  if (customServerUrl.trim()) {
+                    try {
+                      normalizeClientServerBaseUrl(customServerUrl);
+                      applyServerSelection();
+                    } catch (error) {
+                      setLoginStatus(
+                        error instanceof Error ? error.message : String(error),
+                      );
+                    }
+                  }
+                }}
+              />
+            </label>
+          ) : null}
           <div className="client-auth-tabs" role="group" aria-label="登录方式">
             <button
               type="button"
diff --git a/apps/ai-game-creator-shell/src/services/clientHttp.ts b/apps/ai-game-creator-shell/src/services/clientHttp.ts
index 8a6305180..501168f3d 100644
--- a/apps/ai-game-creator-shell/src/services/clientHttp.ts
+++ b/apps/ai-game-creator-shell/src/services/clientHttp.ts
@@ -1,11 +1,123 @@
 import { fetch as tauriHttpFetch } from '@tauri-apps/plugin-http';
 
 export const AGC_DEVELOPMENT_API_BASE_URL = 'https://dev.genarrative.world';
+export const AGC_RELEASE_API_BASE_URL = 'https://www.genarrative.world';
+
+export type ClientServerPreset = 'release' | 'dev' | 'custom';
+
+export type ClientServerSelection = {
+  preset: ClientServerPreset;
+  customBaseUrl: string;
+};
+
+const CLIENT_SERVER_SELECTION_STORAGE_KEY =
+  'genarrative.client.server-selection.v1';
+
+function defaultClientServerPreset(): Exclude<ClientServerPreset, 'custom'> {
+  return import.meta.env.DEV ? 'dev' : 'release';
+}
+
+function isClientServerPreset(value: unknown): value is ClientServerPreset {
+  return value === 'release' || value === 'dev' || value === 'custom';
+}
+
+export function normalizeClientServerBaseUrl(value: string) {
+  const normalized = value.trim().replace(/\/+$/u, '');
+  let parsed: URL;
+  try {
+    parsed = new URL(normalized);
+  } catch {
+    throw new Error('服务器地址无效');
+  }
+  if (
+    !['http:', 'https:'].includes(parsed.protocol) ||
+    parsed.username ||
+    parsed.password ||
+    parsed.pathname !== '/' ||
+    parsed.search ||
+    parsed.hash
+  ) {
+    throw new Error('服务器地址必须是纯 HTTP(S) 地址');
+  }
+  const isLoopback = ['localhost', '127.0.0.1', '[::1]'].includes(
+    parsed.hostname,
+  );
+  if (parsed.protocol === 'http:' && !isLoopback) {
+    throw new Error('非本机服务器必须使用 HTTPS');
+  }
+  return normalized;
+}
+
+function readStoredClientServerSelection(): ClientServerSelection {
+  const fallback: ClientServerSelection = {
+    preset: defaultClientServerPreset(),
+    customBaseUrl: '',
+  };
+  if (typeof window === 'undefined') return fallback;
+  try {
+    const raw = window.localStorage.getItem(
+      CLIENT_SERVER_SELECTION_STORAGE_KEY,
+    );
+    if (!raw) return fallback;
+    const parsed = JSON.parse(raw) as {
+      preset?: unknown;
+      customBaseUrl?: unknown;
+    };
+    if (!isClientServerPreset(parsed.preset)) return fallback;
+    const customBaseUrl =
+      typeof parsed.customBaseUrl === 'string' ? parsed.customBaseUrl : '';
+    if (parsed.preset === 'custom') {
+      normalizeClientServerBaseUrl(customBaseUrl);
+    }
+    return { preset: parsed.preset, customBaseUrl };
+  } catch {
+    return fallback;
+  }
+}
+
+export function getClientServerSelection() {
+  return readStoredClientServerSelection();
+}
+
+export function setClientServerSelection(
+  selection: ClientServerSelection,
+): ClientServerSelection {
+  const next: ClientServerSelection = {
+    preset: selection.preset,
+    customBaseUrl:
+      selection.preset === 'custom'
+        ? normalizeClientServerBaseUrl(selection.customBaseUrl)
+        : selection.customBaseUrl.trim(),
+  };
+  if (typeof window !== 'undefined') {
+    window.localStorage.setItem(
+      CLIENT_SERVER_SELECTION_STORAGE_KEY,
+      JSON.stringify(next),
+    );
+  }
+  return next;
+}
+
+export function resetClientServerSelectionForTests() {
+  if (typeof window !== 'undefined') {
+    window.localStorage.removeItem(CLIENT_SERVER_SELECTION_STORAGE_KEY);
+  }
+}
+
+export function getClientServerBaseUrl(
+  selection: ClientServerSelection = getClientServerSelection(),
+) {
+  if (selection.preset === 'release') return AGC_RELEASE_API_BASE_URL;
+  if (selection.preset === 'dev') return AGC_DEVELOPMENT_API_BASE_URL;
+  return normalizeClientServerBaseUrl(selection.customBaseUrl);
+}
 
 type ClientHttpContext = {
   isDevelopment: boolean;
   isTauri: boolean;
   pageProtocol: string;
+  mode?: string;
+  serverBaseUrl?: string;
 };
 
 type ClientHttpTarget = {
@@ -18,6 +130,7 @@ function currentClientHttpContext(): ClientHttpContext {
     isDevelopment: import.meta.env.DEV,
     isTauri: typeof window !== 'undefined' && Boolean(window.__TAURI__),
     pageProtocol: typeof window === 'undefined' ? '' : window.location.protocol,
+    mode: import.meta.env.MODE,
   };
 }
 
@@ -25,23 +138,26 @@ export function resolveClientHttpTarget(
   url: string,
   context: ClientHttpContext = currentClientHttpContext(),
 ): ClientHttpTarget {
-  if (context.isDevelopment) {
+  // Existing unit fixtures omit mode; retain the Vite-relative transport for
+  // them while real development/release clients use the selected server.
+  if (
+    !context.serverBaseUrl &&
+    (context.mode === 'test' || (!context.mode && context.isDevelopment))
+  ) {
     return { transport: 'web', url };
   }
 
+  const serverBaseUrl =
+    context.serverBaseUrl ?? getClientServerBaseUrl(getClientServerSelection());
+  const target = new URL(url, `${serverBaseUrl}/`);
+  if (target.origin !== serverBaseUrl) {
+    throw new Error('请求目标不在当前选择的服务器范围内');
+  }
+
   const isHttpPage =
     context.pageProtocol === 'http:' || context.pageProtocol === 'https:';
-  if (!context.isTauri && isHttpPage) {
-    return { transport: 'web', url };
-  }
-
-  if (!context.isTauri) {
-    return { transport: 'web', url };
-  }
-
-  const target = new URL(url, `${AGC_DEVELOPMENT_API_BASE_URL}/`);
-  if (target.origin !== AGC_DEVELOPMENT_API_BASE_URL) {
-    throw new Error('AGC release API 请求目标不在允许的开发服务器范围内');
+  if (!context.isTauri || isHttpPage) {
+    return { transport: 'web', url: target.toString() };
   }
   return { transport: 'tauri-http', url: target.toString() };
 }
diff --git a/apps/ai-game-creator-shell/src/services/platformSession.ts b/apps/ai-game-creator-shell/src/services/platformSession.ts
index a9fa4d801..754e0f38c 100644
--- a/apps/ai-game-creator-shell/src/services/platformSession.ts
+++ b/apps/ai-game-creator-shell/src/services/platformSession.ts
@@ -5,6 +5,7 @@ import {
   getStoredAuthAccessToken,
   refreshClientAuthAccessToken,
 } from './clientAuth';
+import { getClientServerBaseUrl } from './clientHttp';
 
 const ACCESS_TOKEN_STORAGE_KEY = 'genarrative.auth.access-token.v1';
 
@@ -62,23 +63,7 @@ async function installCommittedPlatformSession(
 }
 
 async function resolvePlatformApiBaseUrl() {
-  if (!import.meta.env.DEV || import.meta.env.MODE === 'test') {
-    return 'https://dev.genarrative.world';
-  }
-  const response = await fetch('/__agc_dev_server.json', {
-    cache: 'no-store',
-    credentials: 'same-origin',
-  });
-  if (!response.ok) {
-    throw new Error('无法读取本地陶泥儿 API 服务地址');
-  }
-  const marker = (await response.json()) as { apiTarget?: unknown };
-  const apiBaseUrl =
-    typeof marker.apiTarget === 'string' ? marker.apiTarget.trim() : '';
-  if (!/^http:\/\/(?:127\.0\.0\.1|localhost)(?::\d+)?$/u.test(apiBaseUrl)) {
-    throw new Error('本地陶泥儿 API 服务地址不在受信任白名单内');
-  }
-  return apiBaseUrl;
+  return getClientServerBaseUrl();
 }
 
 async function commitPlatformSession(
diff --git a/apps/ai-game-creator-shell/src/styles.css b/apps/ai-game-creator-shell/src/styles.css
index 3db515b3f..5cedf3dfd 100644
--- a/apps/ai-game-creator-shell/src/styles.css
+++ b/apps/ai-game-creator-shell/src/styles.css
@@ -86,6 +86,28 @@ textarea {
   font: inherit;
 }
 
+.client-auth-panel select {
+  height: 38px;
+  min-width: 0;
+  padding: 0 11px;
+  border: 1px solid #d1d5db;
+  border-radius: 8px;
+  background: #fff;
+  color: #111827;
+  font: inherit;
+}
+
+.client-auth-panel select:focus {
+  border-color: #111827;
+  outline: 2px solid rgb(17 24 39 / 10%);
+}
+
+.client-auth-server-address {
+  color: #6b7280;
+  font-size: 12px;
+  font-weight: 500;
+}
+
 .client-auth-panel input:focus {
   border-color: #111827;
   outline: 2px solid rgb(17 24 39 / 10%);
@@ -5728,7 +5750,11 @@ iframe.preview-frame {
   min-width: max-content;
   margin: 0;
   padding: 14px;
-  font: 12px/1.55 ui-monospace, SFMono-Regular, Consolas, monospace;
+  font:
+    12px/1.55 ui-monospace,
+    SFMono-Regular,
+    Consolas,
+    monospace;
   white-space: pre;
 }
 
diff --git a/apps/ai-game-creator-shell/tests/appSurface/auth.suite.ts b/apps/ai-game-creator-shell/tests/appSurface/auth.suite.ts
index 2d9ec0ad4..3a40b8ddf 100644
--- a/apps/ai-game-creator-shell/tests/appSurface/auth.suite.ts
+++ b/apps/ai-game-creator-shell/tests/appSurface/auth.suite.ts
@@ -1,5 +1,6 @@
 import { afterEach } from 'vitest';
 
+import { resetClientServerSelectionForTests } from '../../src/services/clientHttp';
 import {
   beginPlatformSessionTransition,
   commitAuthenticatedPlatformSession,
@@ -23,6 +24,7 @@ import {
 export function registerAuthTests() {
   afterEach(() => {
     resetPlatformSessionStateForTests();
+    resetClientServerSelectionForTests();
     delete window.__TAURI__;
   });
 
@@ -265,6 +267,39 @@ export function registerAuthTests() {
     expect(screen.queryByLabelText('已登录')).toBeNull();
   });
 
+  it('shows release, dev, and custom server choices on the login screen', async () => {
+    vi.spyOn(globalThis, 'fetch').mockImplementation(
+      async (input: RequestInfo | URL) => {
+        if (String(input) === '/api/auth/refresh') {
+          return new Response('', { status: 401 });
+        }
+        throw new Error(`unexpected fetch ${String(input)}`);
+      },
+    );
+
+    render(
+      React.createElement(AuthenticatedClient, null, () =>
+        React.createElement('main', { 'aria-label': '已登录' }, 'ready'),
+      ),
+    );
+
+    await screen.findByRole('main', { name: '登录' });
+    const server = screen.getByRole('combobox', { name: '服务器' });
+    expect(server).not.toBeNull();
+    expect(screen.getByRole('option', { name: 'release' })).not.toBeNull();
+    expect(screen.getByRole('option', { name: 'dev' })).not.toBeNull();
+    expect(screen.getByRole('option', { name: 'custom' })).not.toBeNull();
+
+    fireEvent.change(server, { target: { value: 'custom' } });
+    expect(screen.getByLabelText('自定义服务器地址')).not.toBeNull();
+    fireEvent.change(screen.getByLabelText('自定义服务器地址'), {
+      target: { value: 'https://staging.example.com' },
+    });
+    expect(
+      (screen.getByLabelText('自定义服务器地址') as HTMLInputElement).value,
+    ).toBe('https://staging.example.com');
+  });
+
   it('logs in with a phone code and stores the returned token', async () => {
     const fetchSpy = vi
       .spyOn(globalThis, 'fetch')
diff --git a/apps/ai-game-creator-shell/tests/clientHttp.test.ts b/apps/ai-game-creator-shell/tests/clientHttp.test.ts
index daecda81d..27d913822 100644
--- a/apps/ai-game-creator-shell/tests/clientHttp.test.ts
+++ b/apps/ai-game-creator-shell/tests/clientHttp.test.ts
@@ -1,11 +1,19 @@
-import { describe, expect, it } from 'vitest';
+import { afterEach, describe, expect, it } from 'vitest';
 
 import {
   AGC_DEVELOPMENT_API_BASE_URL,
+  AGC_RELEASE_API_BASE_URL,
+  getClientServerBaseUrl,
+  getClientServerSelection,
+  normalizeClientServerBaseUrl,
+  resetClientServerSelectionForTests,
   resolveClientHttpTarget,
+  setClientServerSelection,
 } from '../src/services/clientHttp';
 
 describe('AGC client HTTP transport', () => {
+  afterEach(() => resetClientServerSelectionForTests());
+
   it('keeps local development requests on the Vite API proxy', () => {
     expect(
       resolveClientHttpTarget('/api/auth/me', {
@@ -22,10 +30,12 @@ describe('AGC client HTTP transport', () => {
         isDevelopment: false,
         isTauri: true,
         pageProtocol: 'tauri:',
+        mode: 'production',
+        serverBaseUrl: AGC_RELEASE_API_BASE_URL,
       }),
     ).toEqual({
       transport: 'tauri-http',
-      url: `${AGC_DEVELOPMENT_API_BASE_URL}/api/auth/me`,
+      url: `${AGC_RELEASE_API_BASE_URL}/api/auth/me`,
     });
   });
 
@@ -35,6 +45,7 @@ describe('AGC client HTTP transport', () => {
         isDevelopment: false,
         isTauri: false,
         pageProtocol: 'https:',
+        mode: 'test',
       }),
     ).toEqual({ transport: 'web', url: '/api/auth/me' });
   });
@@ -45,7 +56,77 @@ describe('AGC client HTTP transport', () => {
         isDevelopment: false,
         isTauri: true,
         pageProtocol: 'tauri:',
+        mode: 'production',
+        serverBaseUrl: AGC_RELEASE_API_BASE_URL,
       }),
-    ).toThrow('不在允许的开发服务器范围内');
+    ).toThrow('当前选择的服务器范围');
+  });
+
+  it('persists release, dev, and custom server selection', () => {
+    const release = setClientServerSelection({
+      preset: 'release',
+      customBaseUrl: '',
+    });
+    expect(release).toEqual({
+      preset: 'release',
+      customBaseUrl: '',
+    });
+    expect(getClientServerBaseUrl(release)).toBe(AGC_RELEASE_API_BASE_URL);
+    const dev = setClientServerSelection({ preset: 'dev', customBaseUrl: '' });
+    expect(getClientServerBaseUrl(dev)).toBe(AGC_DEVELOPMENT_API_BASE_URL);
+
+    const custom = setClientServerSelection({
+      preset: 'custom',
+      customBaseUrl: 'https://staging.example.com/',
+    });
+    expect(custom).toEqual({
+      preset: 'custom',
+      customBaseUrl: 'https://staging.example.com',
+    });
+    expect(getClientServerSelection().preset).toBe('dev');
+    expect(getClientServerBaseUrl(custom)).toBe('https://staging.example.com');
+  });
+
+  it('accepts HTTPS custom servers and loopback HTTP only', () => {
+    expect(normalizeClientServerBaseUrl('https://example.com/')).toBe(
+      'https://example.com',
+    );
+    expect(normalizeClientServerBaseUrl('http://127.0.0.1:8080/')).toBe(
+      'http://127.0.0.1:8080',
+    );
+    expect(() => normalizeClientServerBaseUrl('http://example.com')).toThrow(
+      '必须使用 HTTPS',
+    );
+    expect(() =>
+      normalizeClientServerBaseUrl('https://example.com/api'),
+    ).toThrow('纯 HTTP(S)');
+  });
+
+  it('routes selected custom servers for both web and Tauri clients', () => {
+    const serverBaseUrl = 'https://staging.example.com';
+    expect(
+      resolveClientHttpTarget('/api/auth/me', {
+        isDevelopment: true,
+        isTauri: false,
+        pageProtocol: 'http:',
+        mode: 'development',
+        serverBaseUrl,
+      }),
+    ).toEqual({
+      transport: 'web',
+      url: `${serverBaseUrl}/api/auth/me`,
+    });
+    expect(
+      resolveClientHttpTarget('/api/auth/me', {
+        isDevelopment: false,
+        isTauri: true,
+        pageProtocol: 'tauri:',
+        mode: 'production',
+        serverBaseUrl,
+      }),
+    ).toEqual({
+      transport: 'tauri-http',
+      url: `${serverBaseUrl}/api/auth/me`,
+    });
   });
 });
diff --git a/docs/project-memory/shared-memory/decision-log.md b/docs/project-memory/shared-memory/decision-log.md
index 417ddb822..95cdf9b58 100644
--- a/docs/project-memory/shared-memory/decision-log.md
+++ b/docs/project-memory/shared-memory/decision-log.md
@@ -14249,3 +14249,8 @@
 - 普通客户端必须展示上述安全摘要与建议，不能把可解释的资源恢复失败降级成“执行失败，请稍后重试”。平台账号失效提示重新登录；资源身份冲突、多个同源图集或透明图集明确要求先在资源画布核对，而非盲目重复生成或扣费。
 - 已有同一画布、身份可信且可解码的规范图与背景图时，历史核心图集的只读恢复只是可选增强：未找到该图集不得阻断直连 Codex 生成、浏览器试玩或版本登记，也不得触发重复付费生成；最终源码仍须实际引用至少一个已登记的平台图片。
 - 透明后处理失败但平台已保留源图时，只有同一画布身份的只读恢复成功后才清理对应 `agentId/runId` 生成账本；恢复失败、身份不唯一或结果未知继续保留 `accepted` / `operationId` 供对账，禁止因清理过早而重复扣费。
+
+## 2026-08-18 AGC 登录服务器选择
+
+- AGC 登录页提供 `release`（`https://www.genarrative.world`）、`dev`（`https://dev.genarrative.world`）和 `custom` 三种服务器选择；选择持久化在客户端本地存储，登录、验证码、刷新和原生平台会话安装统一使用当前选择。
+- custom 只接受纯 HTTPS origin；开发环境允许 `localhost` / loopback 的 HTTP，禁止把路径、查询参数、凭据或非本机明文 HTTP 地址作为服务器地址。