feat: 新增 Markdown 渲染组件并适配 macOS 标题栏

- 新增 MarkdownBlock 组件实现更新日志的 Markdown 渲染
- 新增 markdown 工具函数和样式
- 适配 macOS 标题栏，隐藏最小化/关闭按钮并禁用最大化按钮
- 新增 1.0.0 版本更新日志文档

src/assets/main.css

@@ -208,6 +208,168 @@ body {
   overflow-y: auto;
 }
 
+/*
+ * Markdown 渲染内容（更新日志等）的排版。类名唯一，使用全局样式；
+ * 内容由 v-html 注入，不参与组件 scoped 样式，故放在此处统一维护。
+ */
+.markdown-body {
+  font-size: 13px;
+  line-height: 1.75;
+  word-break: break-word;
+}
+
+.markdown-body > :first-child {
+  margin-top: 0 !important;
+}
+
+.markdown-body > :last-child {
+  margin-bottom: 0 !important;
+}
+
+.markdown-body h1,
+.markdown-body h2,
+.markdown-body h3,
+.markdown-body h4,
+.markdown-body h5,
+.markdown-body h6 {
+  margin: 14px 0 8px;
+  font-weight: 600;
+  line-height: 1.4;
+}
+
+.markdown-body h1 {
+  font-size: 17px;
+}
+
+.markdown-body h2 {
+  font-size: 15px;
+}
+
+.markdown-body h3 {
+  font-size: 14px;
+}
+
+.markdown-body h4,
+.markdown-body h5,
+.markdown-body h6 {
+  font-size: 13px;
+}
+
+.markdown-body p {
+  margin: 8px 0;
+}
+
+.markdown-body ul,
+.markdown-body ol {
+  margin: 8px 0;
+  padding-left: 20px;
+}
+
+.markdown-body ul {
+  list-style: disc;
+}
+
+.markdown-body ol {
+  list-style: decimal;
+}
+
+.markdown-body li {
+  margin: 4px 0;
+}
+
+.markdown-body li > ul,
+.markdown-body li > ol {
+  margin: 4px 0;
+}
+
+.markdown-body a {
+  color: #6366f1;
+  text-decoration: none;
+}
+
+.markdown-body a:hover {
+  text-decoration: underline;
+}
+
+.markdown-body code {
+  padding: 1px 5px;
+  border-radius: 5px;
+  background: rgba(148, 163, 184, 0.22);
+  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+  font-size: 12px;
+}
+
+.markdown-body pre {
+  margin: 10px 0;
+  padding: 10px 12px;
+  border-radius: 8px;
+  background: rgba(15, 23, 42, 0.06);
+  overflow-x: auto;
+}
+
+.markdown-body pre code {
+  padding: 0;
+  background: transparent;
+  font-size: 12px;
+}
+
+.markdown-body blockquote {
+  margin: 8px 0;
+  padding: 2px 12px;
+  border-left: 3px solid rgba(99, 102, 241, 0.5);
+  opacity: 0.85;
+}
+
+.markdown-body hr {
+  margin: 12px 0;
+  border: none;
+  border-top: 1px solid rgba(15, 23, 42, 0.1);
+}
+
+.markdown-body table {
+  width: 100%;
+  margin: 10px 0;
+  border-collapse: collapse;
+  font-size: 12px;
+}
+
+.markdown-body th,
+.markdown-body td {
+  padding: 6px 10px;
+  border: 1px solid rgba(15, 23, 42, 0.12);
+}
+
+.markdown-body th {
+  background: rgba(148, 163, 184, 0.14);
+  font-weight: 600;
+}
+
+.markdown-body img {
+  max-width: 100%;
+  border-radius: 6px;
+}
+
+.dark .markdown-body a {
+  color: #a5b4fc;
+}
+
+.dark .markdown-body pre {
+  background: rgba(255, 255, 255, 0.06);
+}
+
+.dark .markdown-body hr {
+  border-top-color: rgba(255, 255, 255, 0.12);
+}
+
+.dark .markdown-body th,
+.dark .markdown-body td {
+  border-color: rgba(255, 255, 255, 0.14);
+}
+
+.dark .markdown-body th {
+  background: rgba(255, 255, 255, 0.08);
+}
+
 /* 细滚动条 */
 ::-webkit-scrollbar {
   width: 6px;