页面路由跳转返回后数据回显，记住原先的状态

src/utils/navigationReturnState.js

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+/**
+ * 驾驶舱导航状态管理
+ * 核心逻辑：
+ * - 菜单进入：清空导航栈
+ * - 页面跳转 push：当前页面状态入栈
+ * - 返回 go(-1)：出栈，恢复前一个页面状态
+ * - 返回按钮：栈长度 > 0 时显示
+ */
+
+const STACK_KEY = 'cockpit_nav_stack';
+const STATE_PREFIX = 'cockpit_nav_state_';
+
+/**
+ * 获取导航栈
+ * @returns {Array<{ path: string, state: object }>}
+ */
+export function getNavStack() {
+  try {
+    const raw = sessionStorage.getItem(STACK_KEY);
+    if (!raw) return [];
+    return JSON.parse(raw);
+  } catch (e) {
+    return [];
+  }
+}
+
+/**
+ * 获取导航栈长度
+ * @returns {number}
+ */
+export function getNavStackLength() {
+  return getNavStack().length;
+}
+
+/**
+ * 页面跳转时调用：将当前页面状态入栈
+ * @param {string} fromPath - 来源页面路径
+ * @param {object} state - 来源页面的业务状态（如 dateData）
+ */
+export function pushNavigation(fromPath, state = {}) {
+  if (!fromPath) return;
+  try {
+    const stack = getNavStack();
+    stack.push({
+      path: fromPath,
+      state,
+      timestamp: Date.now()
+    });
+    sessionStorage.setItem(STACK_KEY, JSON.stringify(stack));
+    console.log('[navigation] push', fromPath, 'stack length:', stack.length);
+  } catch (e) {
+    console.warn('[navigation] push failed', e);
+  }
+}
+
+/**
+ * 返回时调用：出栈，返回前一个页面信息
+ * @returns {{ path: string, state: object } | null}
+ */
+export function popNavigation() {
+  try {
+    const stack = getNavStack();
+    if (stack.length === 0) return null;
+    const prev = stack.pop();
+    sessionStorage.setItem(STACK_KEY, JSON.stringify(stack));
+    console.log('[navigation] pop', prev.path, 'stack length:', stack.length);
+    return prev;
+  } catch (e) {
+    console.warn('[navigation] pop failed', e);
+    return null;
+  }
+}
+
+/**
+ * 清空导航栈和所有页面状态
+ */
+export function clearNavigation() {
+  try {
+    // 清空栈
+    sessionStorage.removeItem(STACK_KEY);
+    // 清空所有页面状态
+    Object.keys(sessionStorage)
+      .filter(k => k.startsWith(STATE_PREFIX))
+      .forEach(k => sessionStorage.removeItem(k));
+    console.log('[navigation] cleared');
+    // 通知所有监听器
+    window.dispatchEvent(new Event('navigation-cleared'));
+  } catch (e) {
+    console.warn('[navigation] clear failed', e);
+  }
+}
+
+/**
+ * 获取指定页面的状态
+ * @param {string} path - 页面路径
+ * @returns {object | null}
+ */
+export function getNavigationState(path) {
+  if (!path) return null;
+  try {
+    const key = STATE_PREFIX + path;
+    const raw = sessionStorage.getItem(key);
+    if (!raw) return null;
+    return JSON.parse(raw);
+  } catch (e) {
+    return null;
+  }
+}
+
+/**
+ * 消费（读取并删除）指定页面的状态
+ * @param {string} path - 页面路径
+ * @returns {object | null}
+ */
+export function consumeNavigationState(path) {
+  if (!path) return null;
+  try {
+    const key = STATE_PREFIX + path;
+    const raw = sessionStorage.getItem(key);
+    if (!raw) return null;
+    sessionStorage.removeItem(key);
+    return JSON.parse(raw);
+  } catch (e) {
+    try {
+      sessionStorage.removeItem(STATE_PREFIX + path);
+    } catch (e2) { /* ignore */ }
+    return null;
+  }
+}
+
+/**
+ * 保存指定页面的状态
+ * @param {string} path - 页面路径
+ * @param {object} state - 业务状态
+ */
+export function saveNavigationState(path, state) {
+  if (!path) return;
+  try {
+    const key = STATE_PREFIX + path;
+    sessionStorage.setItem(key, JSON.stringify(state));
+  } catch (e) {
+    console.warn('[navigation] save state failed', e);
+  }
+}
+
+// ============ 兼容旧 API（后续可逐步移除）===========
+
+/**
+ * @deprecated 使用 pushNavigation 代替
+ */
+export function saveNavigationReturnState(scope, state) {
+  console.warn('[navigation] saveNavigationReturnState 已废弃，请使用 pushNavigation + saveNavigationState');
+}
+
+/**
+ * @deprecated 使用 consumeNavigationState 代替
+ */
+export function consumeNavigationReturnState(scope) {
+  console.warn('[navigation] consumeNavigationReturnState 已废弃，请使用 popNavigation + consumeNavigationState');
+  return null;
+}
+
+/**
+ * @deprecated
+ */
+export function getNavScope(moduleName) {
+  console.warn('[navigation] getNavScope 已废弃，请直接使用路径作为 key');
+  return `nav:${moduleName}`;
+}