feat: DSL 磁力聚合 — 搜索/解析/预览/投递 + cilisousuo 源 + 中英双语 + Docker 部署

app/utils/i18n.ts

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+import { en2zh, normalizeWs, zh2en } from './i18n-dict'
+
+export type Locale = 'en' | 'zh'
+
+const STORAGE_KEY = 'dsl-locale'
+
+function readInitialLocale(): Locale {
+  if (import.meta.client) {
+    const v = localStorage.getItem(STORAGE_KEY)
+    if (v === 'en' || v === 'zh') return v
+  }
+  return 'en' // 默认英文
+}
+
+// 模块级响应式语言状态（默认英文）
+export const locale = ref<Locale>(readInitialLocale())
+
+export function setLocale(next: Locale) {
+  locale.value = next
+  if (import.meta.client) {
+    localStorage.setItem(STORAGE_KEY, next)
+    document.documentElement.lang = next === 'zh' ? 'zh-CN' : 'en'
+    translateDocument()
+  }
+}
+
+/** 把一段中文（或英文）文本按当前语言翻译；找不到映射时原样返回 */
+export function translateText(input: string): string {
+  if (!input) return input
+  const key = normalizeWs(input)
+  const map = locale.value === 'zh' ? en2zh : zh2en
+  return map[key] ?? input
+}
+
+/** 遍历 root 下的文本节点与常见属性，按当前语言就地翻译 */
+export function walkAndTranslate(root: Node = document.body) {
+  if (!root || !import.meta.client) return
+
+  const walker = document.createTreeWalker(root, NodeFilter.SHOW_TEXT)
+  const fixes: { node: Text; text: string }[] = []
+  let n: Node | null
+  while ((n = walker.nextNode())) {
+    const t = (n as Text).textContent || ''
+    if (!t.trim()) continue
+    const tr = translateText(t)
+    if (tr !== t) fixes.push({ node: n as Text, text: tr })
+  }
+  for (const f of fixes) f.node.textContent = f.text
+
+  // 翻译属性（title / placeholder / alt）
+  if (root instanceof HTMLElement) {
+    root.querySelectorAll<HTMLElement>('*').forEach((el) => {
+      for (const attr of ['title', 'placeholder', 'alt']) {
+        const v = el.getAttribute(attr)
+        if (!v) continue
+        const tr = translateText(v)
+        if (tr !== v) el.setAttribute(attr, tr)
+      }
+    })
+  }
+}
+
+export function translateDocument() {
+  if (import.meta.client) walkAndTranslate(document.body)
+}