feat(login): 新增网易云扫码/手机号登录与酷狗 token 绑定

src/auth/store.js

@@ -0,0 +1,50 @@
+// 登录态存储 —— 各平台凭据持久化（data/auth.json，不入库）
+// 结构：{ wy: { cookie, musicU, userid?, nickname?, updatedAt }, kg: { token, userid, nickname?, updatedAt } }
+
+import { existsSync, mkdirSync, readFileSync, writeFileSync } from 'node:fs'
+import { dirname, join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const DATA_FILE = join(dirname(fileURLToPath(import.meta.url)), '../../data/auth.json')
+
+let cache = null
+
+const load = () => {
+  if (!cache) {
+    try {
+      cache = existsSync(DATA_FILE) ? JSON.parse(readFileSync(DATA_FILE, 'utf8')) : {}
+    } catch {
+      cache = {}
+    }
+  }
+  return cache
+}
+
+const save = (data) => {
+  cache = data
+  mkdirSync(dirname(DATA_FILE), { recursive: true })
+  writeFileSync(DATA_FILE, JSON.stringify(data, null, 2))
+}
+
+export const getCredentials = (platform) => load()[platform] ?? null
+
+export const setCredentials = (platform, credentials) => {
+  const data = load()
+  data[platform] = { ...data[platform], ...credentials, updatedAt: new Date().toISOString() }
+  save(data)
+}
+
+export const clearCredentials = (platform) => {
+  const data = load()
+  delete data[platform]
+  save(data)
+}
+
+/** wy 登录 cookie 字符串（未登录返回空串） */
+export const getWyCookie = () => getCredentials('wy')?.cookie || ''
+
+/** kg 登录态（未登录返回 null） */
+export const getKgAuth = () => {
+  const cred = getCredentials('kg')
+  return cred?.token ? { token: cred.token, userid: cred.userid || 0 } : null
+}