feat: 搜索/替换面板中文化 + 复选框/关闭按钮样式优化

- 搜索/替换面板所有按钮和标签翻译为中文（查找、替换、下一个、上一个、全部、区分大小写、正则、全字匹配、全部替换、关闭）
- 复选框从16px增大到18px，优化与文字的水平对齐（inline-flex + align-items: center）
- 修复关闭按钮CSS选择器错误（.cm-close → [name="close"]），图标从16px增大到22px

src/renderer/components/Editor/useCodeMirror.ts

@@ -23,7 +23,23 @@ export function useCodeMirror({ content, onChange, darkMode, onScroll }: UseCode
   useEffect(() => {
     if (!containerRef.current) return
 
+    // 中文本地化（搜索/替换面板）
+    const zhPhrases = EditorState.phrases.of({
+      'Find': '查找',
+      'Replace': '替换',
+      'next': '下一个',
+      'previous': '上一个',
+      'all': '全部',
+      'match case': '区分大小写',
+      'regexp': '正则',
+      'by word': '全字匹配',
+      'replace': '替换',
+      'replace all': '全部替换',
+      'close': '关闭',
+    })
+
     const extensions: Extension[] = [
+      zhPhrases,
       lineNumbers(),
       highlightActiveLine(),
       highlightSpecialChars(),

src/renderer/styles/global.css

@@ -276,33 +276,59 @@ html, body {
   color: var(--primary) !important;
 }
 
-/* 搜索选项按钮（正则、大小写、全字匹配） */
-.cm-panel .cm-toggle {
-  background: transparent !important;
-  border: 1px solid var(--border) !important;
-  border-radius: 4px !important;
-  color: var(--text-tertiary) !important;
-  font-size: 11px !important;
-  font-weight: 600 !important;
-  font-family: var(--font-mono) !important;
-  padding: 4px 6px !important;
+/* 搜索选项复选框（区分大小写、正则、全字匹配） */
+.cm-search label {
+  display: inline-flex !important;
+  align-items: center !important;
+  gap: 5px !important;
+  font-size: 13px !important;
+  font-family: var(--font-ui) !important;
+  color: var(--text-secondary) !important;
   cursor: pointer !important;
+  user-select: none !important;
+  vertical-align: middle !important;
+  line-height: 1 !important;
+  margin: 0 6px 0 0 !important;
+  padding: 2px 0 !important;
+}
+
+.cm-search input[type="checkbox"] {
+  -webkit-appearance: none !important;
+  appearance: none !important;
+  width: 18px !important;
+  height: 18px !important;
+  border: 1.5px solid var(--border) !important;
+  border-radius: 4px !important;
+  background: var(--bg) !important;
+  cursor: pointer !important;
+  position: relative !important;
+  flex-shrink: 0 !important;
+  vertical-align: middle !important;
+  margin: 0 !important;
   transition: all 0.15s ease !important;
-  height: 28px !important;
-  min-width: 28px !important;
 }
 
-.cm-panel .cm-toggle:hover {
-  background: var(--bg-tertiary) !important;
-  color: var(--text) !important;
-}
-
-.cm-panel .cm-toggle.cm-active {
-  background: var(--primary-light) !important;
-  color: var(--primary) !important;
+.cm-search input[type="checkbox"]:hover {
   border-color: var(--primary) !important;
 }
 
+.cm-search input[type="checkbox"]:checked {
+  background: var(--primary) !important;
+  border-color: var(--primary) !important;
+}
+
+.cm-search input[type="checkbox"]:checked::after {
+  content: '' !important;
+  position: absolute !important;
+  left: 5px !important;
+  top: 2px !important;
+  width: 6px !important;
+  height: 10px !important;
+  border: solid white !important;
+  border-width: 0 2px 2px 0 !important;
+  transform: rotate(45deg) !important;
+}
+
 /* 搜索结果计数 */
 .cm-panel .cm-search-info {
   color: var(--text-tertiary) !important;
@@ -312,17 +338,24 @@ html, body {
   white-space: nowrap !important;
 }
 
-/* 关闭按钮 */
-.cm-panel .cm-close {
+/* 关闭按钮 — 注意：CodeMirror 关闭按钮用的是 name="close"，没有 cm-close class */
+.cm-panel [name="close"] {
+  position: absolute !important;
+  top: 4px !important;
+  right: 4px !important;
   color: var(--text-tertiary) !important;
-  font-size: 16px !important;
+  font-size: 22px !important;
+  line-height: 1 !important;
   cursor: pointer !important;
-  padding: 4px !important;
+  padding: 4px 6px !important;
   border-radius: 4px !important;
+  border: none !important;
+  background: transparent !important;
   transition: all 0.15s ease !important;
+  z-index: 1 !important;
 }
 
-.cm-panel .cm-close:hover {
+.cm-panel [name="close"]:hover {
   background: var(--bg-tertiary) !important;
   color: var(--text) !important;
 }