feat: Shell 类运行时显示 source 命令（继承环境变量）

- CommandCard 支持 primary/secondary 两种样式
- bash/zsh 使用 source <(curl URL)，sh 使用 . <(curl URL)，fish 使用 curl URL | source
- 非 Shell 类运行时（python3/node/ruby/php）不显示 source 命令

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/src/components/CommandCard.tsx

@@ -2,9 +2,11 @@ import { useState } from 'react'
 
 interface Props {
   command: string
+  label?: string
+  variant?: 'primary' | 'secondary'
 }
 
-export default function CommandCard({ command }: Props) {
+export default function CommandCard({ command, label = '运行命令', variant = 'primary' }: Props) {
   const [copied, setCopied] = useState(false)
 
   const handleCopy = () => {
@@ -14,18 +16,38 @@ export default function CommandCard({ command }: Props) {
     })
   }
 
+  const isPrimary = variant === 'primary'
+
   return (
-    <div className="bg-gray-900 border border-blue-500/30 rounded-lg overflow-hidden">
-      <div className="flex items-center justify-between px-4 py-2 bg-blue-500/10 border-b border-blue-500/20">
-        <span className="text-xs text-blue-400 font-medium">运行命令</span>
+    <div className={`rounded-lg overflow-hidden border ${
+      isPrimary
+        ? 'bg-gray-900 border-blue-500/30'
+        : 'bg-gray-900/50 border-gray-700'
+    }`}>
+      <div className={`flex items-center justify-between px-4 py-2 border-b ${
+        isPrimary
+          ? 'bg-blue-500/10 border-blue-500/20'
+          : 'bg-gray-800/50 border-gray-700'
+      }`}>
+        <span className={`text-xs font-medium ${
+          isPrimary ? 'text-blue-400' : 'text-gray-400'
+        }`}>
+          {label}
+        </span>
       </div>
       <div className="p-4 flex items-center gap-3">
-        <code className="flex-1 text-sm font-mono text-green-400 break-all select-all">
+        <code className={`flex-1 text-sm font-mono break-all select-all ${
+          isPrimary ? 'text-green-400' : 'text-gray-300'
+        }`}>
           {command}
         </code>
         <button
           onClick={handleCopy}
-          className="shrink-0 px-3 py-1.5 bg-blue-600 hover:bg-blue-700 rounded text-xs font-medium transition-colors"
+          className={`shrink-0 px-3 py-1.5 rounded text-xs font-medium transition-colors ${
+            isPrimary
+              ? 'bg-blue-600 hover:bg-blue-700'
+              : 'bg-gray-700 hover:bg-gray-600'
+          }`}
         >
           {copied ? '已复制' : '复制'}
         </button>

frontend/src/components/ResultCard.tsx

@@ -1,4 +1,4 @@
-import { CreateScriptResponse } from '../types'
+import { CreateScriptResponse, isShellRuntime, getSourceCommand } from '../types'
 import CommandCard from './CommandCard'
 
 interface Props {
@@ -8,6 +8,8 @@ interface Props {
 
 export default function ResultCard({ result, onReset }: Props) {
   const detailUrl = `${window.location.origin}/s/${result.id}`
+  const showSource = isShellRuntime(result.runtime)
+  const sourceCommand = showSource ? getSourceCommand(result.url, result.runtime) : null
 
   return (
     <div className="space-y-6">
@@ -18,6 +20,19 @@ export default function ResultCard({ result, onReset }: Props) {
 
       <CommandCard command={result.command} />
 
+      {showSource && sourceCommand && (
+        <div>
+          <p className="text-xs text-gray-500 mb-2">
+            如果脚本设置了环境变量（如代理），请使用以下命令在当前 shell 中执行：
+          </p>
+          <CommandCard
+            command={sourceCommand}
+            label="继承环境变量"
+            variant="secondary"
+          />
+        </div>
+      )}
+
       <div className="bg-gray-800/50 border border-gray-700 rounded-lg p-4 space-y-3">
         <div className="flex justify-between text-sm">
           <span className="text-gray-400">脚本 ID</span>

frontend/src/pages/ScriptDetail.tsx

@@ -3,7 +3,7 @@ import { useParams, Link } from 'react-router-dom'
 import ScriptViewer from '../components/ScriptViewer'
 import CommandCard from '../components/CommandCard'
 import { getScript } from '../lib/api'
-import { ScriptDetail as ScriptDetailType } from '../types'
+import { ScriptDetail as ScriptDetailType, isShellRuntime, getSourceCommand } from '../types'
 
 export default function ScriptDetail() {
   const { id } = useParams<{ id: string }>()
@@ -41,6 +41,10 @@ export default function ScriptDetail() {
   }
 
   const command = `curl ${window.location.origin}/raw/${script.id} | ${script.runtime}`
+  const showSource = isShellRuntime(script.runtime)
+  const sourceCommand = showSource
+    ? getSourceCommand(`${window.location.origin}/raw/${script.id}`, script.runtime)
+    : null
 
   return (
     <div>
@@ -64,6 +68,18 @@ export default function ScriptDetail() {
 
       <div className="mt-8">
         <CommandCard command={command} />
+        {showSource && sourceCommand && (
+          <div className="mt-4">
+            <p className="text-xs text-gray-500 mb-2">
+              如果脚本设置了环境变量（如代理），请使用以下命令在当前 shell 中执行：
+            </p>
+            <CommandCard
+              command={sourceCommand}
+              label="继承环境变量"
+              variant="secondary"
+            />
+          </div>
+        )}
       </div>
 
       <div className="mt-8 text-center">

frontend/src/types.ts

@@ -37,3 +37,18 @@ export const EXPIRES_OPTIONS: { value: ExpiresIn; label: string }[] = [
   { value: '7d', label: '7 天' },
   { value: '30d', label: '30 天' },
 ]
+
+const SOURCE_TEMPLATES: Record<string, string> = {
+  bash: 'source <(curl {url})',
+  zsh: 'source <(curl {url})',
+  sh: '. <(curl {url})',
+  fish: 'curl {url} | source',
+}
+
+export function isShellRuntime(runtime: string): boolean {
+  return runtime in SOURCE_TEMPLATES
+}
+
+export function getSourceCommand(url: string, runtime: string): string {
+  return (SOURCE_TEMPLATES[runtime] ?? 'source <(curl {url})').replace('{url}', url)
+}