feat: 添加appfooter

src/layouts/AppFooter.js

@@ -0,0 +1,32 @@
+import React from 'react';
+import { Box, Container, VStack, HStack, Text, Link, useColorModeValue } from '@chakra-ui/react';
+
+/**
+ * 应用通用页脚组件
+ * 包含版权信息、备案号等
+ */
+const AppFooter = () => {
+  return (
+    <Box bg={useColorModeValue('gray.100', 'gray.800')} py={6} mt={8}>
+      <Container maxW="container.xl">
+        <VStack spacing={2}>
+          <Text color="gray.500" fontSize="sm">
+            © 2024 价值前沿. 保留所有权利.
+          </Text>
+          <HStack spacing={4} fontSize="xs" color="gray.400">
+            <Link
+              href="https://beian.mps.gov.cn/#/query/webSearch?code=11010802046286"
+              isExternal
+              _hover={{ color: 'gray.600' }}
+            >
+              京公网安备11010802046286号
+            </Link>
+            <Text>京ICP备2025107343号-1</Text>
+          </HStack>
+        </VStack>
+      </Container>
+    </Box>
+  );
+};
+
+export default AppFooter;