fix(i18n): zh-CN for the case picker rows, Bottom bar settings, new toasts, tile and spreadsheet text

- Case picker: the "New or link a case…" and "Case settings…" rows that
  replaced the translated + and gear buttons get zh-CN entries reusing the
  buttons' wording, plus the list's "No cases match".
- App Settings, Bottom bar: the whole group translates as one (heading, the
  four Git status rows with #543's max repositories and git timeout, and
  their descriptions), so it never reads half English. The Git panel's two
  button names, which the new "Git status" key reaches, read naturally too.
- Toasts: the three "Could not open a new window for this ..." errors and
  the dictation-closed warning.
- Spreadsheet preview: "Spreadsheet preview failed (<status>)" gets a
  pattern. Worker refusals map their error code to one user sentence each in
  the renderer (the raw message goes to the console), feature ids read as
  words (pivot tables, external links), and the notice bar translates each
  item before the join; a number format's code passes through untouched.
  The worker and core are unchanged, so their pinned strings and the
  asset version hash stay as they were.
- Header Stats Style Tiles: the connection tile's value word reads in
  Chinese through scoped "Connection tile: <word>" keys, never bare-word
  keys ("retry" is also the orchestrator's Retry button, "LIVE" a resume
  list badge). The indicator cache now includes the UI language, so a
  language switch repaints it on the next update.
- Tile grid: the "Loading…" label was CSS content text the translator
  cannot reach; it is now content: attr(data-loading-label), written through
  the translator when the tile is built and each time it starts loading.

Tests pin every new string (zh differs, no English left, English unchanged)
and fail without these changes: the tile harvest sees the loading label and
the rename field, a CSS guard keeps words out of tile generated content, the
Bottom bar group, the case picker rows and toasts read from their source,
the connection tile across a language switch, and the spreadsheet error
codes, notice bar and status line.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

test/header-stats-style.test.ts

@@ -14,6 +14,9 @@
  *  - The parts only the new styles draw (stat rings, plan rings, meters, tile words)
  *    are rendered with sane values and hidden by default in CSS, which is what
  *    keeps 'classic' looking exactly as before.
+ *  - The connection tile's value word reads in Chinese through i18n.js's real
+ *    t(), from scoped keys (a bare 'retry' or 'live' key would also translate
+ *    other surfaces), and follows a language switch.
  *
  * The real modules run INSIDE a JSDOM window (runScripts: 'outside-only').
  *
@@ -22,6 +25,7 @@
 
 import { readFileSync } from 'node:fs';
 import { join } from 'node:path';
+import vm from 'node:vm';
 import { JSDOM } from 'jsdom';
 import postcss from 'postcss';
 import { beforeAll, beforeEach, describe, expect, it } from 'vitest';
@@ -195,6 +199,62 @@ describe('the parts the new styles draw', () => {
     expect(document.getElementById('connectionTileValue')!.className).toBe('connection-tile-value connected');
   });
 
+  it('writes the value word in the UI language, from scoped keys, and follows a language switch', () => {
+    const translator = (language: string) => {
+      const dom = new JSDOM('<!doctype html><html><body></body></html>', {
+        runScripts: 'outside-only',
+        url: 'http://localhost/',
+      });
+      vm.runInContext(read('i18n.js'), dom.getInternalVMContext(), { filename: 'i18n.js' });
+      const api = (dom.window as unknown as { CodemanI18n: { t(s: string): string; configure(o: object): void } })
+        .CodemanI18n;
+      api.configure({ language });
+      return { t: api.t, close: () => dom.window.close() };
+    };
+    const zh = translator('zh-CN');
+    const en = translator('en');
+    try {
+      window.codemanT = zh.t;
+      window.CodemanI18n = { language: 'zh-CN' };
+      const app = makeApp();
+      app._computeConnectionDescriptor = () => ({
+        display: 'flex',
+        dotClass: 'connection-dot connected',
+        text: 'WS',
+        title: 'Terminal connected over WebSocket',
+      });
+      app._updateConnectionIndicator();
+      expect(document.getElementById('connectionTileLabel')!.textContent).toBe('WS');
+      expect(document.getElementById('connectionTileValue')!.textContent).toBe('已连接');
+      // The same descriptor after a switch back to English is not skipped as unchanged.
+      window.codemanT = en.t;
+      window.CodemanI18n = { language: 'en' };
+      app._updateConnectionIndicator();
+      expect(document.getElementById('connectionTileValue')!.textContent).toBe('live');
+
+      // Every value word has its own Chinese, and none is a bare key.
+      window.codemanT = zh.t;
+      const values = [
+        'connection-dot connected',
+        'connection-dot fallback',
+        'connection-dot offline',
+        'connection-dot draining',
+        'connection-dot reconnecting',
+      ].map((dotClass) => app._connectionTileWords({ dotClass, text: '' }).value);
+      expect(values).toEqual(['live', 'fallback', 'offline', 'queued', 'retry']);
+      const shown = values.map((value: string) => app._connectionTileValueText(value));
+      expect(shown.filter((text: string) => /[A-Za-z]/.test(text))).toEqual([]);
+      expect(values.filter((value: string) => zh.t(value) !== value)).toEqual([]);
+      // The span the observer must leave alone (its text is set here, already translated).
+      expect(INDEX).toMatch(/id="connectionTileValue" data-i18n-skip>/);
+    } finally {
+      delete window.codemanT;
+      delete window.CodemanI18n;
+      zh.close();
+      en.close();
+    }
+  });
+
   it('fills the CPU and MEM rings from the stats poll, clamped, red past 80%', () => {
     const app = makeApp();
     const ring = (id: string) => {

test/i18n-exit-run-help.test.ts

@@ -7,6 +7,10 @@
  * session name in the accessible name passed through untranslated (a name
  * that is itself a dictionary word included), and read unchanged in English.
  *
+ * The toolbar's case picker rows (which replaced the translated "+" and gear
+ * buttons) and the host-window and dictation toasts are read from their source,
+ * so a renamed label without an entry fails here.
+ *
  * Port: N/A.
  */
 import { readFileSync } from 'node:fs';
@@ -183,3 +187,40 @@ describe('the Help modal and the shortcut overlay in zh-CN', () => {
     expect(overlay).not.toMatch(/<kbd>/);
   });
 });
+
+describe('the case picker rows and the host-window and dictation toasts in zh-CN', () => {
+  const SESSION_UI = read('session-ui.js');
+  const actions = SESSION_UI.slice(
+    SESSION_UI.indexOf('const CASE_PICKER_ACTIONS = ['),
+    SESSION_UI.indexOf('];', SESSION_UI.indexOf('const CASE_PICKER_ACTIONS = ['))
+  );
+  const pickerLabels = [...actions.matchAll(/label: '([^']+)'/g)].map((m) => m[1]);
+  const toasts = ['app.js', 'panels-ui.js', 'webview-tabs.js', 'voice-input.js'].flatMap((file) =>
+    [
+      ...read(file).matchAll(
+        /showToast\??\.?\(\s*'(Could not open a new window for this \w+|That session has closed; dictation not sent)'/g
+      ),
+    ].map((m) => m[1])
+  );
+
+  it('finds the strings it checks (the check is not vacuous)', () => {
+    expect(pickerLabels).toEqual(['New or link a case\u2026', 'Case settings\u2026']);
+    expect(SESSION_UI).toContain('<div class="case-combobox-empty">No cases match</div>');
+    expect(toasts.sort()).toEqual([
+      'Could not open a new window for this dashboard',
+      'Could not open a new window for this preview',
+      'Could not open a new window for this session',
+      'That session has closed; dictation not sent',
+    ]);
+  });
+
+  it('each one reads in Chinese with no English left, and unchanged in English', () => {
+    const bad = [...pickerLabels, 'No cases match', ...toasts].filter((s) => {
+      const text = zh.api.t(s);
+      return text === s || leftover(text).length > 0 || en.api.t(s) !== s;
+    });
+    expect(bad).toEqual([]);
+    // The rows reuse the wording of the buttons they replaced.
+    expect(zh.api.t('Case settings\u2026')).toBe(`${zh.api.t('Case settings')}\u2026`);
+  });
+});

test/spreadsheet-preview.test.ts

@@ -5,6 +5,12 @@
  * The renderer runs against a standalone JSDOM window (like i18n-branding.test.ts)
  * rather than the `jsdom` vitest environment. Workbook strings are asserted to
  * land as text, never markup.
+ *
+ * What the user reads is the renderer's, not the worker's: each worker error
+ * code is one sentence (the raw message goes to the console), feature ids are
+ * words, and every one of those, the HTTP status line and the notice bar's
+ * items read in Chinese through i18n.js's real t(); a number format's code is
+ * workbook text and passes through as is.
  */
 
 import { readFileSync } from 'node:fs';
@@ -14,6 +20,12 @@ import { JSDOM } from 'jsdom';
 import { beforeEach, describe, expect, it, vi } from 'vitest';
 
 const source = readFileSync(resolve(import.meta.dirname, '../src/web/public/spreadsheet-preview.js'), 'utf8');
+const coreSource = readFileSync(resolve(import.meta.dirname, '../src/web/public/spreadsheet-xlsx-core.js'), 'utf8');
+const workerSource = readFileSync(
+  resolve(import.meta.dirname, '../src/web/public/spreadsheet-preview-worker.js'),
+  'utf8'
+);
+const i18nSource = readFileSync(resolve(import.meta.dirname, '../src/web/public/i18n.js'), 'utf8');
 const panelsSource = readFileSync(resolve(import.meta.dirname, '../src/web/public/panels-ui.js'), 'utf8');
 
 // A real origin: the renderer resolves its fetch URL against `location.href`.
@@ -392,6 +404,125 @@ describe('spreadsheet preview renderer', () => {
   });
 });
 
+describe('spreadsheet preview text the user reads', () => {
+  type Translate = (s: string) => string;
+  const translator = (language: string): Translate => {
+    const i18nDom = new JSDOM('<!doctype html><html><body></body></html>', {
+      runScripts: 'outside-only',
+      url: 'http://localhost/',
+    });
+    vm.runInContext(i18nSource, i18nDom.getInternalVMContext(), { filename: 'i18n.js' });
+    const api = (i18nDom.window as any).CodemanI18n as { t: Translate; configure(o: object): void };
+    api.configure({ language });
+    return api.t;
+  };
+  const zh = translator('zh-CN');
+  const en = translator('en');
+  /** What may stay Latin in a translation: file formats, the URL acronym, digits. */
+  const leftover = (text: string) => text.replace(/\b(xlsx|xls|ZIP64|URL)\b/g, '').match(/[A-Za-z]+/g) ?? [];
+
+  beforeEach(() => {
+    WorkerMock.instances = [];
+    document.body.innerHTML = '<div id="preview"></div>';
+    delete (window as any).codemanT;
+    window.requestAnimationFrame = (callback: FrameRequestCallback) =>
+      setTimeout(() => callback(0), 0) as unknown as number;
+    window.cancelAnimationFrame = (id: number) => clearTimeout(id);
+  });
+
+  async function openLoaded() {
+    document.body.innerHTML = '<div id="preview"></div>';
+    const fetchMock = vi.fn(async () => ({ ok: true, arrayBuffer: async () => new ArrayBuffer(8) }));
+    loadRenderer(fetchMock).open({ container: document.querySelector('#preview'), url: '/book.xlsx', size: 8 });
+    const worker = WorkerMock.instances.at(-1)!;
+    worker.emit({ type: 'ready' });
+    await vi.waitFor(() => expect(worker.postMessage).toHaveBeenCalled());
+    return worker;
+  }
+
+  const shown = () => document.querySelector('.spreadsheet-preview-message')?.textContent ?? '';
+
+  it('shows one sentence per worker error code, never the raw message, and each reads in Chinese', async () => {
+    const codes = [
+      ...new Set(
+        [...`${coreSource}\n${workerSource}`.matchAll(/(?:\bfail|XlsxPreviewError)\('([a-z0-9-]+)'/g)].map((m) => m[1])
+      ),
+    ];
+    // Not vacuous: the refusals the core and the worker raise.
+    expect(codes).toEqual(expect.arrayContaining(['encrypted', 'zip64', 'malformed', 'cell-limit', 'style-limit']));
+    const warn = vi.spyOn(console, 'warn').mockImplementation(() => {});
+    try {
+      const texts = new Map<string, string>();
+      for (const code of [...codes, 'parse-failed']) {
+        const worker = await openLoaded();
+        worker.emit({ type: 'error', code, message: `raw ${code} detail` });
+        texts.set(code, shown());
+      }
+      expect([...texts.values()].filter((text) => /raw .* detail/.test(text))).toEqual([]);
+      // Every code the core and worker raise has its own sentence; only an
+      // unlisted one (ExcelJS's own failures) shows the generic failure.
+      expect(codes.filter((code) => texts.get(code) === 'Spreadsheet preview failed')).toEqual([]);
+      expect(texts.get('parse-failed')).toBe('Spreadsheet preview failed');
+      expect(texts.get('encrypted')).toBe(
+        'This workbook is password-protected or in the old .xls format, so it cannot be previewed.'
+      );
+      // The developer detail is kept, in the console.
+      expect(warn).toHaveBeenCalledWith(expect.stringContaining('raw encrypted detail'));
+      const bad = [...new Set(texts.values())].filter((text) => {
+        const t = zh(text);
+        return t === text || leftover(t).length > 0 || en(text) !== text;
+      });
+      expect(bad).toEqual([]);
+    } finally {
+      warn.mockRestore();
+    }
+  });
+
+  it('words the notice bar: feature ids as words, each item translated, a format code as it is', async () => {
+    const notice = async () => {
+      const worker = await openLoaded();
+      worker.emit({ ...metadata(), warnings: ['pivotTables', 'externalLinks', 'charts', 'drawings', 'macros'] });
+      const request = worker.postMessage.mock.calls.at(-1)?.[0];
+      worker.emit({
+        type: 'tile',
+        requestId: request.requestId,
+        sheetId: '1',
+        cells: [],
+        warnings: [
+          'View truncated to the first 2500 cells',
+          'Formula has no cached result',
+          'Unsupported cell value',
+          'Unsupported number format: {name}"x"',
+          '3 unsupported number formats',
+        ],
+      });
+      return document.querySelector('.spreadsheet-preview-notice')!.textContent!;
+    };
+    const english = await notice();
+    expect(english).toBe(
+      'Some workbook features are not shown: pivot tables, external links, charts, drawings, macros, ' +
+        'View truncated to the first 2500 cells, Formula has no cached result, Unsupported cell value, ' +
+        'Unsupported number format: {name}"x", 3 unsupported number formats'
+    );
+    (window as any).codemanT = zh;
+    const chinese = await notice();
+    // The format code is workbook text: kept as is ({name} is not a placeholder here).
+    expect(chinese).toContain('不支持的数字格式: {name}"x"');
+    expect(leftover(chinese.replace('{name}"x"', ''))).toEqual([]);
+    expect(chinese.startsWith(`${zh('Some workbook features are not shown')}: 数据透视表, 外部链接, 图表`)).toBe(true);
+  });
+
+  it('the HTTP status line reads in Chinese with its status', async () => {
+    const fetchMock = vi.fn(async () => ({ ok: false, status: 404, arrayBuffer: async () => new ArrayBuffer(0) }));
+    loadRenderer(fetchMock).open({ container: document.querySelector('#preview'), url: '/book.xlsx', size: 8 });
+    WorkerMock.instances.at(-1)!.emit({ type: 'ready' });
+    await vi.waitFor(() => expect(shown()).toBe('Spreadsheet preview failed (404)'));
+    expect(zh(shown())).toBe('电子表格预览失败（404）');
+    expect(en(shown())).toBe(shown());
+    expect(zh('Spreadsheet preview must use a same-origin URL')).toBe('电子表格预览必须使用同源 URL');
+  });
+});
+
 /**
  * The overlay wiring in panels-ui.js: which route the renderer is pointed at,
  * and that the worker/fetch lifecycle is torn down on close and on re-open.

test/tab-layout-settings-i18n.test.ts

@@ -12,6 +12,9 @@
  *   literal silently replaces the first).
  * - The state-row headings the strip draws (CodemanTabTriage's labels)
  *   translate too.
+ * - The Bottom bar group (the Git status rows, #543's max repositories and
+ *   git timeout among them) translates as one group: heading, every label and
+ *   description, and the Git panel's names that the group's key now reaches.
  *
  * The rows' `desktop` tag is a generic tag shared with rows older than #538
  * (WebGL Renderer) and is left out of the check.
@@ -115,3 +118,67 @@ describe('the Tab Layout settings rows in zh-CN', () => {
     expect(labels.filter((s) => api.t(s) === s || leftover(api.t(s)).length)).toEqual([]);
   });
 });
+
+/** The Bottom bar group: its heading, then each row's label (without its tag) and description. */
+function bottomBarStrings(doc: Document): Map<string, string> {
+  const out = new Map<string, string>();
+  const group = doc.getElementById('appSettingsShowGitStatus')!.closest('.set-group')!;
+  out.set('heading', group.querySelector('h4')!.textContent!.trim());
+  for (const row of group.querySelectorAll('.set-row')) {
+    const id = row.querySelector('input, select')!.id;
+    const label = row.querySelector('.set-row-label')!.cloneNode(true) as Element;
+    label.querySelector('.set-scope')?.remove();
+    out.set(`${id} label`, label.textContent!.trim());
+    out.set(`${id} description`, row.querySelector('.set-row-desc')!.textContent!.trim());
+  }
+  return out;
+}
+
+describe('the Bottom bar settings group in zh-CN', () => {
+  const englishGroup = bottomBarStrings(source.window.document);
+  const chineseGroup = bottomBarStrings(dom.window.document);
+  /** What may stay Latin here: the git and Docker names, and the product name. */
+  const left = (text: string) => text.replace(/\b(Git|git|Docker|Codeman)\b/g, '').match(/[A-Za-z]+/g) ?? [];
+
+  it("finds the heading and the four Git status rows, #543's two included (the check is not vacuous)", () => {
+    expect(englishGroup.size).toBe(9);
+    expect(englishGroup.get('heading')).toBe('Bottom bar');
+    expect(englishGroup.get('appSettingsGitStatusMaxRepos label')).toBe('Git status: max repositories');
+    expect(englishGroup.get('appSettingsGitStatusTimeout label')).toBe('Git status: git timeout');
+  });
+
+  it('translates the heading, every label and every description, with no English left', () => {
+    const bad: string[] = [];
+    for (const [where, text] of chineseGroup) {
+      if (text === englishGroup.get(where) || left(text).length) bad.push(`${where}: "${text}"`);
+    }
+    expect(bad).toEqual([]);
+    expect(chineseGroup.get('appSettingsGitStatusMaxRepos label')).toBe('Git 状态：最多仓库数');
+  });
+
+  it('reads exactly as before in English, and adds each key once', () => {
+    const en = new JSDOM('<!doctype html><html><body></body></html>', {
+      runScripts: 'outside-only',
+      url: 'http://localhost/',
+    });
+    vm.runInContext(I18N, en.getInternalVMContext(), { filename: 'i18n.js' });
+    const t = (en.window as unknown as { CodemanI18n: Api }).CodemanI18n;
+    t.configure({ language: 'en' });
+    expect([...englishGroup.values()].filter((s) => t.t(s) !== s)).toEqual([]);
+    en.window.close();
+    const repeated = [...englishGroup.values()].filter((s) => {
+      const key = s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
+      return (I18N.match(new RegExp(`^\\s*(?:'${key}'|"${key}"|${key}):`, 'gm')) ?? []).length !== 1;
+    });
+    expect(repeated).toEqual([]);
+  });
+
+  it("the Git panel's names, which the group's 'Git status' key reaches too, read naturally", () => {
+    const doc = dom.window.document;
+    expect(doc.getElementById('gitStatusPanel')!.getAttribute('aria-label')).toBe('Git 状态');
+    const labels = [...doc.querySelectorAll('#gitStatusPanel .git-status-actions button')].map((b) =>
+      b.getAttribute('aria-label')
+    );
+    expect(labels).toEqual(['刷新 Git 状态', '关闭 Git 状态']);
+  });
+});

test/tile-grid-i18n.test.ts

@@ -8,12 +8,15 @@
  *   writes text: the count menu (cap and window wording), the Attach
  *   overlay (not attached, attaching, exited, ended), zoom, the header
  *   tooltip, the dividers, the empty slot, every toast, the crash-restart
- *   confirm, the Tiles and Split button titles. Each must translate to text
- *   with no Latin word left beyond key names and durations, and read
- *   unchanged in English.
+ *   confirm, the Tiles and Split button titles, the loading label (a body
+ *   attribute, shown as CSS generated content) and the rename field's name.
+ *   Each must translate to text with no Latin word left beyond key names and
+ *   durations, and read unchanged in English.
  * - Static strings: the shortcut registry's tile entries (overlay and App
  *   Settings list), and index.html run through the real translator in JSDOM
  *   (the Tiles button, the App Settings chips, the Help modal's Tiles rows).
+ * - No words in the tile CSS: generated content (`content: '...'`) is out of
+ *   the translator's reach, so a tile rule may carry glyphs, never text.
  * - User text stays as typed: session names (tile header) and group names
  *   carry data-i18n-skip, and a session name inside the
  *   confirm passes through the pattern untranslated.
@@ -24,6 +27,7 @@ import { readFileSync } from 'node:fs';
 import { resolve } from 'node:path';
 import vm from 'node:vm';
 import { JSDOM } from 'jsdom';
+import postcss from 'postcss';
 import { afterAll, describe, expect, it, vi } from 'vitest';
 import {
   FakeEl,
@@ -33,6 +37,7 @@ import {
   makeGridApp,
   resetGridHarness,
   section,
+  tileEl,
   windowStub,
   type GridApp,
 } from './mocks/tile-grid-vm.js';
@@ -102,6 +107,8 @@ function harvest(root: FakeEl | null | undefined, where: string) {
     add(el.title, 'title');
     add(el.attrs['aria-label'], 'aria-label');
     add(el.attrs.title, 'title attribute');
+    // The loading label: CSS shows it (content: attr(data-loading-label)).
+    add(el.dataset.loadingLabel, 'loading label');
     for (const child of el.children) walk(child, skip);
   };
   if (root) walk(root, false);
@@ -215,6 +222,11 @@ async function exercise() {
   harvestAll(app, 'zoomed');
   app.zoomTile('s-1');
 
+  // Renaming a tile: the input in the name's place, then Escape.
+  app.startTileRename('s-1');
+  harvestAll(app, 'renaming');
+  tileEl('s-1').querySelector('.tile-rename-input')!.dispatch('keydown', { key: 'Escape', preventDefault: vi.fn() });
+
   // A file that is not an image dropped on a tile.
   section.dispatch('drop', {
     target: section.children.find((el) => el.dataset.sessionId === 's-1'),
@@ -327,6 +339,8 @@ describe('every tile grid string the code puts on screen translates to zh-CN', (
       'Tiles: show several sessions side by side (right-click for how many)',
       'Tiles: back to a single session (right-click for how many tiles)',
       '6 tiles was stopped after crashing repeatedly. Restart it?',
+      'Loading…',
+      'Session name',
     ];
     const missing = expected.filter((s) => !seen.has(s));
     expect(missing).toEqual([]);
@@ -471,3 +485,55 @@ describe('user text in the tile code', () => {
     expect(zh.api.t(confirmText[0])).toBe('6 tiles 因反复崩溃已被停止。要重启吗？');
   });
 });
+
+describe('the loading label: CSS generated content, written in the UI language', () => {
+  it('goes through the translator when the tile is built, and again each time the tile starts loading', () => {
+    setUp();
+    const Queue = windowStub.TileLoadQueue;
+    const queue: { onChange?: (tile: unknown, state: string) => void } = {};
+    windowStub.TileLoadQueue = class {
+      constructor(opts: { onChange: (tile: unknown, state: string) => void }) {
+        queue.onChange = opts.onChange;
+      }
+      schedule() {}
+      drop() {}
+    };
+    try {
+      windowStub.codemanT = zh.api.t;
+      const app = makeGridApp(EIGHT);
+      app.openTileGrid(EIGHT.slice(0, 2));
+      const entry = app._tileGrid.tiles.get('s-1');
+      expect(entry.body.dataset.loadingLabel).toBe('加载中…');
+      // A language switched since is picked up the next time the tile loads.
+      windowStub.codemanT = en.api.t;
+      app._tileLoadQueue();
+      queue.onChange!(entry.tile, 'queued');
+      expect(entry.el.classList.contains('tile--loading')).toBe(true);
+      expect(entry.body.dataset.loadingLabel).toBe('Loading…');
+      queue.onChange!(entry.tile, 'idle');
+      expect(entry.el.classList.contains('tile--loading')).toBe(false);
+    } finally {
+      windowStub.TileLoadQueue = Queue;
+      delete windowStub.codemanT;
+    }
+  });
+
+  it('no tile rule carries words in generated content (the translator cannot reach it)', () => {
+    const bad: string[] = [];
+    const contents = new Map<string, string>();
+    postcss.parse(read('styles.css')).walkRules((rule) => {
+      if (!/\.tile\b/.test(rule.selector)) return;
+      rule.walkDecls('content', (decl) => {
+        contents.set(rule.selector, decl.value);
+        // CSS escapes are glyphs (\2026, \00B7), not words.
+        const literals = [...decl.value.matchAll(/'([^']*)'|"([^"]*)"/g)].map((m) =>
+          (m[1] ?? m[2]).replace(/\\[0-9a-fA-F]{1,6}\s?/g, '')
+        );
+        if (literals.some((text) => /[A-Za-z]/.test(text))) bad.push(`${rule.selector} { content: ${decl.value} }`);
+      });
+    });
+    // Not vacuous: the loading label is one of the rules read.
+    expect(contents.get('.tile.tile--loading .tile-body::after')).toBe('attr(data-loading-label)');
+    expect(bad).toEqual([]);
+  });
+});