feedback5: the public dev branch is marked as a development build (the owner's decision of 2026-10-06): version 0.2.0-dev (title footer, boot banner, /healthz), a README warning under the title (unstable, not for public servers, how to report, shared browser storage, no release zips), a visible 开发版 tag on the title screen (zh / en), a boot-banner warning for hosts, and tools/package.mjs refuses a dev version without --allow-dev; test/version.test.js checks all of it

public/js/screens/title.js

@@ -10,7 +10,7 @@
 // pure CSS/SVG (radar, ridgelines, glow), so it never issues a request that can 404.
 
 import { useMemo, useState } from '../../vendor/hooks.module.js';
-import { NAME_MAX_LEN, APP_VERSION } from '../../../shared/constants.js';
+import { NAME_MAX_LEN, APP_VERSION, DEV_BUILD } from '../../../shared/constants.js';
 import { html, Button, Icon, MicroLabel, TextField, PingPill } from '../ui/components.js';
 import { GuideButton } from '../ui/guide.js';
 import { toast } from '../ui/toasts.js';
@@ -280,6 +280,7 @@ export function TitleScreen() {
     <footer class="title-foot">
       <span>${t('非官方同人复刻 · 游戏素材版权归 上海鹰角网络 / Yostar 所有')}</span>
       <${MicroLabel}>v${APP_VERSION} · WEB SIMULATION<//>
+      ${DEV_BUILD ? html`<span class="title-dev" role="note">${t('开发版 · 不稳定，请勿用于公开服务器')}</span>` : null}
     </footer>
   </div>`;
 }