feat(i18n): complete zh-CN hardening and locale consistency

tests/test_chinese_locale.py

@@ -0,0 +1,65 @@
+from collections import Counter
+from pathlib import Path
+import re
+
+
+REPO = Path(__file__).resolve().parent.parent
+
+
+def read(path: Path) -> str:
+    return path.read_text(encoding="utf-8")
+
+
+def test_chinese_locale_block_exists():
+    src = read(REPO / "static" / "i18n.js")
+    assert "\n  zh: {" in src
+    assert "_lang: 'zh'" in src
+    assert "_speech: 'zh-CN'" in src
+
+
+def test_chinese_locale_includes_representative_translations():
+    src = read(REPO / "static" / "i18n.js")
+    expected = [
+        "settings_title: '\\u8bbe\\u7f6e'",
+        "login_title: '\\u767b\\u5f55'",
+        "approval_heading: '需要审批'",
+        "tab_tasks: '任务'",
+        "tab_profiles: '配置'",
+        "session_time_just_now: '刚刚'",
+        "onboarding_title: '欢迎使用 Hermes Web UI'",
+        "onboarding_complete: '引导完成'",
+    ]
+    for entry in expected:
+        assert entry in src
+
+
+def test_chinese_locale_covers_english_keys():
+    src = read(REPO / "static" / "i18n.js")
+    en_match = re.search(r"\n  en: \{([\s\S]*?)\n  \},\n\n  es: \{", src)
+    zh_match = re.search(
+        r"\n  zh: \{([\s\S]*?)\n  \},\n\n  // Traditional Chinese \(zh-Hant\)",
+        src,
+    )
+    assert en_match, "English locale block not found"
+    assert zh_match, "Chinese locale block not found"
+
+    key_pattern = re.compile(r"^\s{4}([a-zA-Z0-9_]+):", re.MULTILINE)
+    en_keys = set(key_pattern.findall(en_match.group(1)))
+    zh_keys = set(key_pattern.findall(zh_match.group(1)))
+
+    missing = sorted(en_keys - zh_keys)
+    assert not missing, f"Chinese locale missing keys: {missing}"
+
+
+def test_chinese_locale_has_no_duplicate_keys():
+    src = read(REPO / "static" / "i18n.js")
+    zh_match = re.search(
+        r"\n  zh: \{([\s\S]*?)\n  \},\n\n  // Traditional Chinese \(zh-Hant\)",
+        src,
+    )
+    assert zh_match, "Chinese locale block not found"
+
+    key_pattern = re.compile(r"^\s{4}([a-zA-Z0-9_]+):", re.MULTILINE)
+    keys = key_pattern.findall(zh_match.group(1))
+    duplicates = sorted(k for k, count in Counter(keys).items() if count > 1)
+    assert not duplicates, f"Chinese locale has duplicate keys: {duplicates}"