更新项目配置文件，优化提交信息校验；修改应用元数据为“GitHub 目录下载器”

.idea/git_toolbox_prj.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GitToolBoxProjectSettings">
+    <option name="commitMessageIssueKeyValidationOverride">
+      <BoolValueOverride>
+        <option name="enabled" value="true" />
+      </BoolValueOverride>
+    </option>
+    <option name="commitMessageValidationEnabledOverride">
+      <BoolValueOverride>
+        <option name="enabled" value="true" />
+      </BoolValueOverride>
+    </option>
+  </component>
+</project>

.idea/misc.xml

@@ -7,9 +7,6 @@
   <component name="GoLibraries">
     <option name="indexEntireGoPath" value="true" />
   </component>
-  <component name="GoVcsConfiguration">
-    <option name="GO_FMT" value="false" />
-  </component>
   <component name="ProjectInspectionProfilesVisibleTreeState">
     <entry key="Project Default">
       <profile-state>

app/layout.tsx

@@ -5,9 +5,8 @@ import { Analytics } from '@vercel/analytics/next'
 import './globals.css'
 
 export const metadata: Metadata = {
-  title: 'v0 App',
-  description: 'Created with v0',
-  generator: 'v0.app',
+  title: 'GitHub 目录下载器',
+  description: '下载GitHub仓库中的特定目录，无需克隆整个仓库'
 }
 
 export default function RootLayout({