新增后台管理系统（答辩用

gym-manage-coach/store/auth.js

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+/**
+ * 教练端认证状态管理
+ * 风格参考 gym-manage-cuit 的 stores/auth.ts
+ */
+
+import { reactive } from 'vue'
+import { login as loginApi } from '@/api/auth.js'
+import { TOKEN_KEY, USER_INFO_KEY, setToken, setRefreshToken, clearAuth } from '@/utils/request.js'
+
+// 使用 reactive 在 Vue3 Uniapp 中做简易状态管理
+const state = reactive({
+	accessToken: uni.getStorageSync(TOKEN_KEY) || '',
+	userInfo: uni.getStorageSync(USER_INFO_KEY) ? JSON.parse(uni.getStorageSync(USER_INFO_KEY)) : null,
+	isLoggedIn: !!uni.getStorageSync(TOKEN_KEY)
+})
+
+function saveUserInfo(info) {
+	state.userInfo = info
+	uni.setStorageSync(USER_INFO_KEY, JSON.stringify(info))
+}
+
+async function login(username, password) {
+	const res = await loginApi({ username, password })
+	// 兼容两种响应格式：{ code, message, data } 包裹 或 直接返回 login data
+	const data = res.data || res
+	state.accessToken = data.accessToken
+	state.userInfo = data.userInfo
+	state.isLoggedIn = true
+
+	setToken(data.accessToken)
+	setRefreshToken(data.refreshToken)
+	saveUserInfo(data.userInfo)
+
+	return data
+}
+
+function logout() {
+	state.accessToken = ''
+	state.userInfo = null
+	state.isLoggedIn = false
+	clearAuth()
+}
+
+function getCoachId() {
+	return state.userInfo?.id || null
+}
+
+export function useAuthStore() {
+	return {
+		state,
+		login,
+		logout,
+		getCoachId,
+		saveUserInfo
+	}
+}