fix: 优化移动端页面体验

- repos 页面：标题和按钮移动端换行显示，响应式布局优化
- config 页面：移动端无边框，全屏宽度，按钮垂直堆叠
- gitea config 页面：同 config 页面优化
- BuildConfig、RepoCard、Dialog 等组件响应式优化

src/pages/repos/modules/CreateRepoDialog.tsx

@@ -64,7 +64,7 @@ export function CreateRepoDialog({ open, onOpenChange }: CreateRepoDialogProps)
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="sm:max-w-150">
+      <DialogContent className="w-[90vw] max-w-lg sm:max-w-[525px]">
         <DialogHeader>
           <DialogTitle>新建仓库</DialogTitle>
           <DialogDescription>
@@ -87,7 +87,7 @@ export function CreateRepoDialog({ open, onOpenChange }: CreateRepoDialogProps)
             <Textarea
               id="description"
               placeholder="简短描述你的仓库..."
-              rows={3}
+              rows={2}
               {...register('description')}
             />
           </div>
@@ -110,16 +110,17 @@ export function CreateRepoDialog({ open, onOpenChange }: CreateRepoDialogProps)
             />
           </div>
 
-          <DialogFooter>
+          <DialogFooter className="flex-col sm:flex-row gap-2 sm:gap-0">
             <Button
               type="button"
               variant="outline"
               onClick={() => onOpenChange(false)}
               disabled={isSubmitting}
+              className="w-full sm:w-auto"
             >
               取消
             </Button>
-            <Button type="submit" disabled={isSubmitting}>
+            <Button type="submit" disabled={isSubmitting} className="w-full sm:w-auto">
               {isSubmitting ? '创建中...' : '创建仓库'}
             </Button>
           </DialogFooter>