feat(web): 🎨 Unified color theme, AntV light/dark theme switching, Antd first-screen style loading. (#1020)

Co-authored-by: 黄振洪 <hzh01509324@alibaba-inc.com>
Co-authored-by: Aralhi <xiaoping0501@gmail.com>

web/pages/knowledge/chunk/index.tsx

@@ -48,7 +48,7 @@ function ChunkList() {
   }, [id, spaceName]);
 
   return (
-    <div className="h-full overflow-y-scroll relative">
+    <div className="h-full overflow-y-scroll relative px-2">
       <Breadcrumb
         className="m-6"
         items={[
@@ -71,6 +71,7 @@ function ChunkList() {
               return (
                 <Card
                   key={chunk.id}
+                  className="mt-2"
                   title={
                     <>
                       <DocIcon type={chunk.doc_type} />