i18n and UI fix

.sisyphus/evidence/task-03-locale-structure.txt

@@ -0,0 +1,84 @@
+# Task 03: Locale File Structure - Evidence
+
+## Status: ✅ COMPLETE (Pre-existing)
+
+## Directory Structure Created
+```
+src/renderer/src/locales/
+├── default/
+│   ├── common.json (31 keys)
+│   ├── domain.json (31 keys)
+│   ├── settings.json (24 keys)
+│   └── errors.json (20 keys)
+├── zh-CN/
+│   ├── common.json (31 keys)
+│   ├── domain.json (31 keys)
+│   ├── settings.json (24 keys)
+│   └── errors.json (20 keys)
+├── ja-JP/
+│   ├── common.json (31 keys)
+│   ├── domain.json (31 keys)
+│   ├── settings.json (24 keys)
+│   └── errors.json (20 keys)
+└── en-US/
+    ├── common.json (31 keys)
+    ├── domain.json (31 keys)
+    ├── settings.json (24 keys)
+    └── errors.json (20 keys)
+```
+
+## Verification
+- [x] Directories created: default/, zh-CN/, ja-JP/, en-US/
+- [x] Files created: common.json, domain.json, settings.json, errors.json
+- [x] Each file has >5 translation keys (minimum 20 per file)
+- [x] Flat key structure used (no nested objects)
+
+## Sample Content
+
+### common.json (default)
+```json
+{
+  "appName": "Kintone Manager",
+  "save": "保存",
+  "cancel": "取消",
+  "delete": "删除",
+  "edit": "编辑",
+  ...
+}
+```
+
+### domain.json (default)
+```json
+{
+  "title": "域名管理",
+  "addDomain": "添加域名",
+  "editDomain": "编辑域名",
+  ...
+}
+```
+
+### settings.json (default)
+```json
+{
+  "title": "设置",
+  "language": "语言",
+  "selectLanguage": "选择语言",
+  ...
+}
+```
+
+### errors.json (default)
+```json
+{
+  "networkError": "网络错误",
+  "invalidDomain": "无效的域名",
+  "connectionFailed": "连接失败",
+  ...
+}
+```
+
+## Notes
+- Structure was already in place from prior work
+- All translations follow flat key structure
+- Chinese is the default/source language
+- English and Japanese translations provided