diff --git a/CLAUDE.md b/CLAUDE.md
index aa9c41b..6dd71ed 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -115,10 +115,44 @@
 
 ---
 
+## 🧠 项目记忆管理
+
+### 项目容器标签
+
+**containerTag**: `esim-tools`
+
+### 关键记忆点
+
+#### 技术栈决策
+- **无框架设计**：坚持原生 JavaScript，避免 React/Vue 依赖，保持最小打包体积
+- **Serverless 架构**：Netlify Functions + Edge Functions，BFF 模式代理
+- **原生 ES6 模块**：业务页面不经 Webpack 打包，浏览器原生加载
+
+#### 踩坑记录
+- **Giffgaff OAuth REDIRECT_URI**：环境变量只影响服务端 token exchange，前端授权 URL 由 `api-config.js` 独立控制
+- **Netlify Free Plan 限制**：Functions 每月 125,000 次调用配额，避免前端轮询
+- **Safari 隐私模式**：IndexedDB 会抛出 QuotaExceededError，需降级到 sessionStorage
+
+#### 编码偏好
+- 缩进：2 空格
+- 引号：单引号优先
+- 分号：必须使用
+- 命名：camelCase（变量/函数），PascalCase（类），kebab-case（文件）
+
+### 自动记忆触发
+
+- 修改 OAuth/认证流程 → 检索 "OAuth PKCE 认证 零信任"
+- 添加 Netlify Functions → 检索 "Functions 中间件 withAuth"
+- 性能优化 → 检索 "性能 瓶颈 IndexedDB"
+- 部署问题 → 检索 "Netlify 部署 环境变量"
+
+---
+
 ## 变更记录
 
 | 时间 | 变更内容 |
 |------|----------|
+| 2026-06-12 | 集成 Not-ace-memory 记忆管理系统 |
 | 2026-06-02 22:54:25 | 增量扫描更新：为 src/giffgaff 和 src/simyo 新建 CLAUDE.md，修复模块结构图 click 链接，校正脚本数量 |
 | 2026-05-25 | 清理 Legacy 残留措辞：删除 verify-legacy-frozen 工具链、修复 server.js 死路由 simyo-static、统一架构表述为"原生 ES6 模块" |
 | 2026-05-18 | 文档清理与路径重构：移除未使用的新模块化版本，修复文档错链，精简重复文档 |
diff --git a/src/giffgaff/js/giffgaff-app.js b/src/giffgaff/js/giffgaff-app.js
index c755971..1106d76 100644
--- a/src/giffgaff/js/giffgaff-app.js
+++ b/src/giffgaff/js/giffgaff-app.js
@@ -1242,8 +1242,12 @@ class GiffgaffApp {
                 if (state.memberId && (state.esimActivationCode || state.esimSSN)) {
                     if (state.lpaString) {
                         targetStep = 5;
-                        // LPA已获取，提示清理
+                        // LPA已获取，显示二维码和 LPA 信息（修复 Issue #75）
                         setTimeout(() => {
+                            // 显示二维码和 LPA 字符串
+                            console.log('[Giffgaff] 从 session 恢复 LPA，显示二维码和 LPA 信息');
+                            uiController.showESimResult();
+
                             uiController.showStatus(
                                 uiController.elements.tokenStatus,
                                 t('giffgaff.app.status.lpaFetchedOnce'),
diff --git a/src/giffgaff/js/modules/ui-controller.js b/src/giffgaff/js/modules/ui-controller.js
index da2d74f..5b78dd7 100644
--- a/src/giffgaff/js/modules/ui-controller.js
+++ b/src/giffgaff/js/modules/ui-controller.js
@@ -535,12 +535,55 @@ export class UIController {
      */
     showESimResult() {
         const state = stateManager.getState();
-        if (!state.lpaString) return;
 
-        this.elements.resultContainer.classList.add('active');
-        this.generateQRCode(state.lpaString);
+        try {
+            // 防御性检查：即使 lpaString 为空也显示容器，给用户明确提示（修复 Issue #75）
+            this.elements.resultContainer.classList.add('active');
 
-        this.elements.esimInfo.innerHTML = `
+            if (!state.lpaString) {
+                // LPA 字符串缺失，显示错误提示和调试信息
+                console.error('[Giffgaff] showESimResult called but lpaString is empty');
+                this.elements.qrcode.innerHTML = `
+                    <div class="alert alert-danger">
+                        <i class="fas fa-exclamation-circle me-2"></i>
+                        ${t('giffgaff.app.error.lpaStringMissing') || '获取 LPA 字符串失败'}
+                    </div>
+                `;
+                this.elements.esimInfo.innerHTML = `
+                    <div class="alert alert-warning">
+                        <p><strong>${tl('可能原因')}：</strong></p>
+                        <ul class="mb-0">
+                            <li>后端轮询超时或失败</li>
+                            <li>GraphQL 响应异常</li>
+                            <li>网络连接中断</li>
+                            <li>eSIM 状态异常</li>
+                        </ul>
+                        <hr class="my-2">
+                        <p class="mb-0">
+                            <small>
+                                ${tl('请打开浏览器控制台（F12）查看详细日志')}
+                                <br>
+                                <a href="https://github.com/Silentely/eSIM-Tools/issues" target="_blank" rel="noopener noreferrer">
+                                    ${tl('提交问题反馈')} <i class="fas fa-external-link-alt"></i>
+                                </a>
+                            </small>
+                        </p>
+                    </div>
+                `;
+                return;
+            }
+
+            // 验证 DOM 元素存在
+            if (!this.elements.qrcode || !this.elements.esimInfo) {
+                console.error('[Giffgaff] DOM elements not found: qrcode or esimInfo');
+                return;
+            }
+
+            console.log('[Giffgaff] Displaying eSIM result, LPA length:', state.lpaString.length);
+
+            // 正常流程：先显示 LPA 信息（确保用户至少能看到文本），再生成二维码
+            // 调整顺序：LPA 文本优先，二维码可以慢慢加载
+            this.elements.esimInfo.innerHTML = `
             <div class="mb-3">
                 <h5 class="text-primary">${tl('LPA字符串')}</h5>
                 <p class="text-break"><small>${state.lpaString}</small></p>
@@ -559,30 +602,63 @@ export class UIController {
             </div>
         `;
 
-        // 绑定按钮事件
-        const copyBtn = document.getElementById('copyLpaBtn');
-        const downloadBtn = document.getElementById('downloadQrBtn');
+            // 绑定按钮事件
+            const copyBtn = document.getElementById('copyLpaBtn');
+            const downloadBtn = document.getElementById('downloadQrBtn');
 
-        if (copyBtn) {
-            copyBtn.addEventListener('click', () => {
-                if (window.copyLPAString) {
-                    window.copyLPAString(state.lpaString, copyBtn);
-                }
-            });
+            if (copyBtn) {
+                copyBtn.addEventListener('click', () => {
+                    if (window.copyLPAString) {
+                        window.copyLPAString(state.lpaString, copyBtn);
+                    }
+                });
+            }
+
+            if (downloadBtn) {
+                downloadBtn.addEventListener('click', () => {
+                    const img = this.elements.qrcode.querySelector('img');
+                    if (img && window.downloadQRCode) {
+                        window.downloadQRCode(img.src, 'giffgaff_esim_qrcode.png');
+                    }
+                });
+            }
+
+            // 生成二维码（放在最后，即使失败也不影响 LPA 文本显示）
+            try {
+                this.generateQRCode(state.lpaString);
+            } catch (error) {
+                console.error('[Giffgaff] generateQRCode failed:', error);
+                this.elements.qrcode.innerHTML = `
+                    <div class="alert alert-danger">
+                        <i class="fas fa-exclamation-circle me-2"></i>
+                        二维码生成失败，请使用上方 LPA 字符串手动激活
+                    </div>
+                `;
+            }
+
+            setTimeout(() => {
+                this.elements.resultContainer.scrollIntoView({ behavior: 'smooth', block: 'center' });
+            }, 500);
+        } catch (error) {
+            // 最外层错误捕获：确保即使出现未预期异常，用户也能看到错误提示
+            console.error('[Giffgaff] showESimResult failed:', error);
+            this.elements.qrcode.innerHTML = `
+                <div class="alert alert-danger">
+                    <i class="fas fa-exclamation-circle me-2"></i>
+                    显示 eSIM 信息时发生错误
+                </div>
+            `;
+            this.elements.esimInfo.innerHTML = `
+                <div class="alert alert-warning">
+                    <p><strong>错误详情：</strong> ${error.message}</p>
+                    <p class="mb-0">
+                        <small>
+                            请刷新页面重试，或按 F12 → Application → Session Storage → giffgaff_session 手动获取 lpaString
+                        </small>
+                    </p>
+                </div>
+            `;
         }
-
-        if (downloadBtn) {
-            downloadBtn.addEventListener('click', () => {
-                const img = this.elements.qrcode.querySelector('img');
-                if (img && window.downloadQRCode) {
-                    window.downloadQRCode(img.src, 'giffgaff_esim_qrcode.png');
-                }
-            });
-        }
-
-        setTimeout(() => {
-            this.elements.resultContainer.scrollIntoView({ behavior: 'smooth', block: 'center' });
-        }, 500);
     }
 
     /**
diff --git a/src/js/modules/i18n-data.js b/src/js/modules/i18n-data.js
index bccb870..24bd0e2 100644
--- a/src/js/modules/i18n-data.js
+++ b/src/js/modules/i18n-data.js
@@ -413,6 +413,7 @@ export const TRANSLATIONS = {
     'giffgaff.app.status.tokenFetchedSuccess': 'eSIM下载代码获取成功',
     'giffgaff.app.status.oauthOpened': '登录页面已打开，请完成登录后复制回调URL',
     'giffgaff.app.error.tokenFailed': '获取eSIM下载代码失败：{message}',
+    'giffgaff.app.error.lpaStringMissing': '获取 LPA 字符串失败，请稍后重试或联系支持',
     'giffgaff.app.status.lpaFetchedOnce': '已成功获取到 eSIM 二维码/LPA（为安全起见仅显示一次）',
     'giffgaff.app.prompt.clearAfterLpa': '已成功获取到 eSIM 二维码/LPA。是否立即清空会话并重置？',
     'giffgaff.app.prompt.resumeEsim': '检测到已有激活码/SSN，是否继续完成eSIM激活？',
@@ -704,6 +705,7 @@ export const TRANSLATIONS = {
     'giffgaff.app.status.tokenFetchedSuccess': 'eSIM download token retrieved.',
     'giffgaff.app.status.oauthOpened': 'Login page opened. Complete the sign-in and copy the callback URL.',
     'giffgaff.app.error.tokenFailed': 'Failed to fetch download token: {message}',
+    'giffgaff.app.error.lpaStringMissing': 'Failed to retrieve LPA string. Please try again later or contact support.',
     'giffgaff.app.status.lpaFetchedOnce': 'eSIM QR/LPA retrieved (displayed once for security).',
     'giffgaff.app.prompt.clearAfterLpa': 'eSIM QR/LPA already retrieved. Clear session and reset now?',
     'giffgaff.app.prompt.resumeEsim': 'Detected existing activation code/SSN. Continue eSIM activation?',
diff --git a/tests/giffgaff/session-restore-lpa.test.js b/tests/giffgaff/session-restore-lpa.test.js
new file mode 100644
index 0000000..91f3b87
--- /dev/null
+++ b/tests/giffgaff/session-restore-lpa.test.js
@@ -0,0 +1,159 @@
+/**
+ * Giffgaff Session 恢复 LPA 显示测试
+ * 修复 Issue #75：刷新页面后不显示二维码和 LPA 信息
+ */
+
+describe('Giffgaff Session Restore - LPA Display', () => {
+  let mockStateManager;
+  let mockUIController;
+  let mockState;
+
+  beforeEach(() => {
+    // 清理 DOM
+    document.body.innerHTML = `
+      <div id="resultContainer"></div>
+      <div id="qrcode"></div>
+      <div id="esimInfo"></div>
+      <div id="tokenStatus"></div>
+    `;
+
+    // Mock state with lpaString
+    mockState = {
+      accessToken: 'mock-token',
+      emailSignature: 'mock-signature',
+      memberId: 'mock-member-id',
+      esimSSN: '8944123456789012345',
+      esimActivationCode: 'ABC123',
+      lpaString: 'LPA:1$example.com$activation-code',
+      currentStep: 5
+    };
+
+    // Mock StateManager
+    mockStateManager = {
+      getState: jest.fn(() => mockState),
+      loadSession: jest.fn(() => true),
+      subscribe: jest.fn(),
+      getCookie: jest.fn(() => null),
+      get: jest.fn((key) => mockState[key])
+    };
+
+    // Mock UIController
+    mockUIController = {
+      elements: {
+        resultContainer: document.getElementById('resultContainer'),
+        qrcode: document.getElementById('qrcode'),
+        esimInfo: document.getElementById('esimInfo'),
+        tokenStatus: document.getElementById('tokenStatus')
+      },
+      showESimResult: jest.fn(),
+      showStatus: jest.fn(),
+      showSection: jest.fn(),
+      updateStatusPanel: jest.fn()
+    };
+  });
+
+  test('应该在 session 恢复时显示 LPA 和二维码', () => {
+    // 验证初始状态
+    expect(mockState.lpaString).toBeTruthy();
+    expect(mockState.esimSSN).toBeTruthy();
+
+    // 模拟 handleSessionRestore 的核心逻辑
+    if (mockState.lpaString) {
+      mockUIController.showESimResult();
+    }
+
+    // 验证 showESimResult 被调用
+    expect(mockUIController.showESimResult).toHaveBeenCalled();
+  });
+
+  test('showESimResult 应该处理空 lpaString 的情况', () => {
+    // 模拟 lpaString 为空
+    const emptyState = { ...mockState, lpaString: '' };
+    mockStateManager.getState = jest.fn(() => emptyState);
+
+    const resultContainer = document.getElementById('resultContainer');
+    const qrcode = document.getElementById('qrcode');
+    const esimInfo = document.getElementById('esimInfo');
+
+    // 模拟 showESimResult 的防御性逻辑
+    const state = mockStateManager.getState();
+    resultContainer.classList.add('active');
+
+    if (!state.lpaString) {
+      qrcode.innerHTML = `
+        <div class="alert alert-danger">
+          <i class="fas fa-exclamation-circle me-2"></i>
+          获取 LPA 字符串失败
+        </div>
+      `;
+      esimInfo.innerHTML = `
+        <div class="alert alert-warning">
+          <p><strong>可能原因：</strong></p>
+          <ul class="mb-0">
+            <li>后端轮询超时或失败</li>
+            <li>GraphQL 响应异常</li>
+            <li>网络连接中断</li>
+            <li>eSIM 状态异常</li>
+          </ul>
+        </div>
+      `;
+    }
+
+    // 验证错误提示显示
+    expect(resultContainer.classList.contains('active')).toBe(true);
+    expect(qrcode.innerHTML).toContain('获取 LPA 字符串失败');
+    expect(esimInfo.innerHTML).toContain('可能原因');
+  });
+
+  test('showESimResult 应该正常生成二维码（有 lpaString）', () => {
+    const resultContainer = document.getElementById('resultContainer');
+    const qrcode = document.getElementById('qrcode');
+
+    // 模拟 generateQRCode 的简化逻辑
+    const state = mockStateManager.getState();
+    resultContainer.classList.add('active');
+
+    if (state.lpaString) {
+      const img = document.createElement('img');
+      img.src = `https://qrcode.show/${encodeURIComponent(state.lpaString)}`;
+      img.alt = 'eSIM二维码';
+      qrcode.appendChild(img);
+    }
+
+    // 验证二维码生成
+    expect(resultContainer.classList.contains('active')).toBe(true);
+    expect(qrcode.querySelector('img')).toBeTruthy();
+    expect(qrcode.querySelector('img').src).toContain('qrcode.show');
+  });
+
+  test('session 恢复应该处理不完整状态（无 SSN）', () => {
+    // 模拟状态不一致：有 lpaString 但无 SSN
+    const inconsistentState = {
+      ...mockState,
+      esimSSN: '', // SSN 缺失
+      lpaString: 'LPA:1$example.com$activation-code'
+    };
+    mockStateManager.getState = jest.fn(() => inconsistentState);
+
+    // 模拟状态降级逻辑
+    let targetStep = 5;
+    if (inconsistentState.lpaString && !inconsistentState.esimSSN) {
+      console.warn('[Test] State inconsistency detected');
+      targetStep = 4; // 降级到 step 4
+    }
+
+    // 验证降级逻辑
+    expect(targetStep).toBe(4);
+  });
+
+  test('session 恢复应该在 500ms 后显示二维码（模拟延迟）', (done) => {
+    const showResult = jest.fn();
+
+    // 模拟延迟调用
+    setTimeout(() => {
+      showResult();
+      expect(showResult).toHaveBeenCalled();
+      done();
+    }, 500);
+  });
+});