feat(Jwt): 重构 JWT 组件，新增常量和结果视图

- 新增 constants.ts 文件，定义 JWT 输入占位符和配置常量，提升代码可读性。
- 删除 JwtSection 组件，重构为 JwtResultView 组件，简化结果展示逻辑。
- 更新 index.tsx，使用 JwtResultView 组件替代原有的 JWT 结果展示方式，优化页面结构。

src/pages/Jwt/JwtSection.tsx

@@ -1,36 +0,0 @@
-import { CopyButton } from '@/components/CopyButton';
-import { stringifyJson } from '@/utils/jwt';
-import { cn } from '@/lib/utils';
-
-interface JwtSectionProps {
-  title: string;
-  content: unknown;
-  colorClass: string;
-  bgClass: string;
-  borderClass: string;
-}
-
-export default function JwtSection({
-  title,
-  content,
-  colorClass,
-  bgClass,
-  borderClass,
-}: JwtSectionProps) {
-  return (
-    <div className={cn('p-4 rounded-xl border border-solid', bgClass, borderClass)}>
-      <div className="flex justify-between items-center mb-2 select-none">
-        <span className={cn('text-xs font-bold tracking-wider uppercase', colorClass)}>
-          {title}
-        </span>
-        <CopyButton
-          text={JSON.stringify(content)}
-          className="h-6 w-6 rounded-md border text-muted-foreground"
-        />
-      </div>
-      <pre className="m-0 p-3 bg-muted/30 dark:bg-muted/10 rounded-lg text-xs font-mono overflow-x-auto whitespace-pre-wrap break-all border border-border/50 text-foreground/90 leading-relaxed select-text">
-        {content ? stringifyJson(content) : '无法解析'}
-      </pre>
-    </div>
-  );
-}

src/pages/Jwt/components/JwtCopyBlock.tsx

@@ -0,0 +1,30 @@
+import { CopyButton } from '@/components/CopyButton';
+import { cn } from '@/lib/utils';
+
+interface JwtCopyBlockProps {
+  title: string;
+  copyText: string;
+  titleClassName?: string;
+  containerClassName?: string;
+  children: React.ReactNode;
+}
+
+export default function JwtCopyBlock({
+  title,
+  copyText,
+  titleClassName,
+  containerClassName,
+  children,
+}: JwtCopyBlockProps) {
+  return (
+    <div className={cn('p-4 rounded-xl border shadow-sm', containerClassName)}>
+      <div className="flex justify-between items-center mb-2 select-none">
+        <span className={cn('text-xs font-bold tracking-wider uppercase', titleClassName)}>
+          {title}
+        </span>
+        <CopyButton text={copyText} className="h-6 w-6 rounded-md border text-muted-foreground" />
+      </div>
+      {children}
+    </div>
+  );
+}

src/pages/Jwt/components/JwtResultView.tsx

@@ -0,0 +1,49 @@
+import { stringifyJson } from '@/utils/jwt';
+import type { JwtResult } from '@/utils/jwt';
+import { cn } from '@/lib/utils';
+import {
+  JWT_JSON_CONTENT_CLASS,
+  JWT_SECTION_CONFIG,
+  JWT_SIGNATURE_SECTION,
+  JWT_TEXT_CONTENT_CLASS,
+} from '../constants';
+import JwtCopyBlock from './JwtCopyBlock';
+
+interface JwtResultViewProps {
+  result: JwtResult;
+}
+
+export default function JwtResultView({ result }: JwtResultViewProps) {
+  return (
+    <div className="flex flex-col gap-4">
+      {JWT_SECTION_CONFIG.map(({ contentKey, title, colorClass, bgClass, borderClass }) => {
+        const content = result[contentKey];
+
+        return (
+          <JwtCopyBlock
+            key={contentKey}
+            title={title}
+            copyText={JSON.stringify(content)}
+            titleClassName={colorClass}
+            containerClassName={cn('border-solid', bgClass, borderClass)}
+          >
+            <pre className={JWT_JSON_CONTENT_CLASS}>
+              {content ? stringifyJson(content) : '无法解析'}
+            </pre>
+          </JwtCopyBlock>
+        );
+      })}
+
+      <JwtCopyBlock
+        title={JWT_SIGNATURE_SECTION.title}
+        copyText={result.signature || ''}
+        titleClassName={JWT_SIGNATURE_SECTION.titleClassName}
+        containerClassName={JWT_SIGNATURE_SECTION.containerClassName}
+      >
+        <span className={JWT_TEXT_CONTENT_CLASS}>
+          {result.signature || JWT_SIGNATURE_SECTION.emptyLabel}
+        </span>
+      </JwtCopyBlock>
+    </div>
+  );
+}

src/pages/Jwt/constants.ts

@@ -0,0 +1,41 @@
+export const JWT_INPUT_PLACEHOLDER = '在此粘贴 JWT 令牌 (Encoded JWT)...';
+
+export type JwtSectionContentKey = 'header' | 'payload';
+
+export interface JwtSectionConfig {
+  contentKey: JwtSectionContentKey;
+  title: string;
+  colorClass: string;
+  borderClass: string;
+  bgClass: string;
+}
+
+export const JWT_SECTION_CONFIG: JwtSectionConfig[] = [
+  {
+    contentKey: 'header',
+    title: 'HEADER: 算法 & 令牌类型',
+    colorClass: 'text-[#fb015b] dark:text-rose-400',
+    borderClass: 'border-[#fb015b]/20 dark:border-rose-500/20',
+    bgClass: 'bg-[#fb015b]/5 dark:bg-rose-500/5',
+  },
+  {
+    contentKey: 'payload',
+    title: 'PAYLOAD: 数据',
+    colorClass: 'text-[#a03aff] dark:text-purple-400',
+    borderClass: 'border-[#a03aff]/20 dark:border-purple-500/20',
+    bgClass: 'bg-[#a03aff]/5 dark:bg-purple-500/5',
+  },
+];
+
+export const JWT_SIGNATURE_SECTION = {
+  title: '签名',
+  titleClassName: 'text-muted-foreground/90',
+  containerClassName: 'border border-border bg-secondary/40',
+  emptyLabel: '无签名',
+} as const;
+
+export const JWT_JSON_CONTENT_CLASS =
+  'm-0 p-3 bg-muted/30 dark:bg-muted/10 rounded-lg text-xs font-mono overflow-x-auto whitespace-pre-wrap break-all border border-border/50 text-foreground/90 leading-relaxed select-text';
+
+export const JWT_TEXT_CONTENT_CLASS =
+  'block text-xs font-mono break-all text-foreground/80 bg-muted/30 dark:bg-muted/10 p-3 rounded-lg border border-border/50 leading-relaxed select-text';

src/pages/Jwt/index.tsx

@@ -1,66 +1,26 @@
 import TextInputArea from '@/components/TextInputArea';
-import { CopyButton } from '@/components/CopyButton';
+import JwtResultView from './components/JwtResultView';
-import EmptyPlaceholder from '@/components/EmptyPlaceholder';
+import { JWT_INPUT_PLACEHOLDER } from './constants';
-import JwtSection from './JwtSection';
 import { useJwt } from './useJwt';
 
 export default function Index() {
   const { jwtInput, result, handleChange, handleClear } = useJwt();
 
   return (
-    <div className="p-4 w-full flex flex-col space-y-4 select-none">
+    <div className="p-4 w-full flex flex-col gap-4 select-none">
-      <div className="flex flex-col gap-4">
+      <TextInputArea
-        <TextInputArea
+        minRows={5}
-          minRows={5}
+        maxRows={10}
-          maxRows={10}
+        placeholder={JWT_INPUT_PLACEHOLDER}
-          placeholder={'在此粘贴 JWT 令牌 (Encoded JWT)...'}
+        value={jwtInput}
-          value={jwtInput}
+        onChange={handleChange}
-          onChange={handleChange}
+        allowCopy={true}
-          allowCopy={true}
+        showClear={true}
-          showClear={true}
+        externalError={result?.error || undefined}
-          externalError={result?.error || undefined}
+        onClear={handleClear}
-          onClear={handleClear}
+      />
-        />
 
-        {result && !result.error && (
+      {result && !result.error && <JwtResultView result={result} />}
-          <div className="flex flex-col gap-4">
-            <JwtSection
-              title={'HEADER: 算法 & 令牌类型'}
-              content={result.header}
-              colorClass="text-[#fb015b] dark:text-rose-400"
-              borderClass="border-[#fb015b]/20 dark:border-rose-500/20"
-              bgClass="bg-[#fb015b]/5 dark:bg-rose-500/5"
-            />
-
-            <JwtSection
-              title={'PAYLOAD: 数据'}
-              content={result.payload}
-              colorClass="text-[#a03aff] dark:text-purple-400"
-              borderClass="border-[#a03aff]/20 dark:border-purple-500/20"
-              bgClass="bg-[#a03aff]/5 dark:bg-purple-500/5"
-            />
-
-            <div className="p-4 rounded-xl border border-border bg-secondary/40 shadow-sm">
-              <div className="flex justify-between items-center mb-2">
-                <span className="text-xs font-bold tracking-wider text-muted-foreground/90 uppercase">
-                  {'签名'}
-                </span>
-                <CopyButton
-                  text={result.signature || ''}
-                  className="h-6 w-6 rounded-md border text-muted-foreground"
-                />
-              </div>
-              <span className="block text-xs font-mono break-all text-foreground/80 bg-muted/30 dark:bg-muted/10 p-3 rounded-lg border border-border/50 leading-relaxed select-text">
-                {result.signature || '无签名'}
-              </span>
-            </div>
-          </div>
-        )}
-
-        {result?.error && (
-          <EmptyPlaceholder className="p-6 min-h-0">{'无效的 JSON 格式'}</EmptyPlaceholder>
-        )}
-      </div>
     </div>
   );
 }