diff --git a/apps/ai-game-creator-shell/src/components/error-report/ErrorReportDialog.tsx b/apps/ai-game-creator-shell/src/components/error-report/ErrorReportDialog.tsx
index 523378bfd..216f04b61 100644
--- a/apps/ai-game-creator-shell/src/components/error-report/ErrorReportDialog.tsx
+++ b/apps/ai-game-creator-shell/src/components/error-report/ErrorReportDialog.tsx
@@ -14,8 +14,11 @@ import { ThemedModal } from '../modal/ThemedModal';
 type ErrorReportDialogProps = {
   open: boolean;
   onClose: () => void;
+  fallbackEvents?: ClientErrorEvent[];
 };
 
+const emptyFallbackEvents: ClientErrorEvent[] = [];
+
 function diagnosticLogLabel(
   logsReady: boolean,
   logsError: boolean,
@@ -26,7 +29,11 @@ function diagnosticLogLabel(
   return `附加应用诊断日志（${logCount} 个文件）`;
 }
 
-export function ErrorReportDialog({ open, onClose }: ErrorReportDialogProps) {
+export function ErrorReportDialog({
+  open,
+  onClose,
+  fallbackEvents = emptyFallbackEvents,
+}: ErrorReportDialogProps) {
   const [events, setEvents] = useState<ClientErrorEvent[]>([]);
   const [eventsReady, setEventsReady] = useState(false);
   const [eventsError, setEventsError] = useState(false);
@@ -63,6 +70,15 @@ export function ErrorReportDialog({ open, onClose }: ErrorReportDialogProps) {
       })
       .catch(() => {
         if (disposed) return;
+        if (fallbackEvents.length) {
+          setEvents(fallbackEvents);
+          setSelectedFingerprints(
+            new Set(fallbackEvents.map((event) => event.fingerprint)),
+          );
+          setEventsReady(true);
+          setStatus('最新错误读取失败，已使用打开通知时的快照');
+          return;
+        }
         setEventsError(true);
         setEventsReady(true);
       });
@@ -81,7 +97,7 @@ export function ErrorReportDialog({ open, onClose }: ErrorReportDialogProps) {
     return () => {
       disposed = true;
     };
-  }, [open]);
+  }, [fallbackEvents, open]);
 
   const submit = useCallback(async () => {
     const selectedEvents = events.filter((event) =>
diff --git a/apps/ai-game-creator-shell/src/components/error-report/ErrorReportNotice.tsx b/apps/ai-game-creator-shell/src/components/error-report/ErrorReportNotice.tsx
index 96f6fc11c..676cece87 100644
--- a/apps/ai-game-creator-shell/src/components/error-report/ErrorReportNotice.tsx
+++ b/apps/ai-game-creator-shell/src/components/error-report/ErrorReportNotice.tsx
@@ -12,6 +12,9 @@ export function ErrorReportNotice() {
   const [notificationEvents, setNotificationEvents] = useState<
     ClientErrorEvent[]
   >([]);
+  const [reportFallbackEvents, setReportFallbackEvents] = useState<
+    ClientErrorEvent[]
+  >([]);
   const [reportOpen, setReportOpen] = useState(false);
 
   const requestId = useRef(0);
@@ -65,10 +68,16 @@ export function ErrorReportNotice() {
   }, [loadEvents]);
 
   const openReport = () => {
+    setReportFallbackEvents(notificationEvents);
     setReportOpen(true);
     setNotificationEvents([]);
   };
 
+  const closeReport = () => {
+    setReportOpen(false);
+    setReportFallbackEvents([]);
+  };
+
   return (
     <>
       {notificationEvents.length ? (
@@ -103,7 +112,8 @@ export function ErrorReportNotice() {
       ) : null}
       <ErrorReportDialog
         open={reportOpen}
-        onClose={() => setReportOpen(false)}
+        fallbackEvents={reportFallbackEvents}
+        onClose={closeReport}
       />
     </>
   );
diff --git a/apps/ai-game-creator-shell/tests/ErrorReportDialog.test.tsx b/apps/ai-game-creator-shell/tests/ErrorReportDialog.test.tsx
index 33ca9afc1..cf8e05694 100644
--- a/apps/ai-game-creator-shell/tests/ErrorReportDialog.test.tsx
+++ b/apps/ai-game-creator-shell/tests/ErrorReportDialog.test.tsx
@@ -64,4 +64,18 @@ describe('ErrorReportDialog', () => {
     ).toBeTruthy();
     expect(screen.queryByText('当前没有待报告的错误。')).toBeNull();
   });
+
+  it('最新快照读取失败时使用打开通知时的事件快照', async () => {
+    mockState.getPending.mockRejectedValue(new Error('瞬时读取失败'));
+    mockState.readLogs.mockResolvedValue([]);
+
+    render(
+      <ErrorReportDialog open fallbackEvents={[event]} onClose={vi.fn()} />,
+    );
+
+    expect(await screen.findByText(event.message)).toBeTruthy();
+    expect(
+      screen.getByText('最新错误读取失败，已使用打开通知时的快照'),
+    ).toBeTruthy();
+  });
 });
diff --git a/apps/ai-game-creator-shell/tests/ErrorReportNotice.test.tsx b/apps/ai-game-creator-shell/tests/ErrorReportNotice.test.tsx
index 5bf74a1da..1fbe7b85d 100644
--- a/apps/ai-game-creator-shell/tests/ErrorReportNotice.test.tsx
+++ b/apps/ai-game-creator-shell/tests/ErrorReportNotice.test.tsx
@@ -1,6 +1,12 @@
 /** @vitest-environment jsdom */
 
-import { cleanup, render, screen, waitFor } from '@testing-library/react';
+import {
+  cleanup,
+  fireEvent,
+  render,
+  screen,
+  waitFor,
+} from '@testing-library/react';
 import { afterEach, describe, expect, it, vi } from 'vitest';
 
 const mockState = vi.hoisted(() => ({
@@ -8,6 +14,10 @@ const mockState = vi.hoisted(() => ({
   listeners: [] as Array<() => void>,
 }));
 
+const dialogState = vi.hoisted(() => ({
+  fallbackEvents: [] as (typeof event)[],
+}));
+
 vi.mock('../src/services/errorReporting', () => ({
   getPendingClientErrorEvents: mockState.getPending,
   subscribeClientErrorEvents: (listener: () => void) => {
@@ -21,7 +31,16 @@ vi.mock('../src/services/errorReporting', () => ({
 }));
 
 vi.mock('../src/components/error-report/ErrorReportDialog', () => ({
-  ErrorReportDialog: () => null,
+  ErrorReportDialog: ({
+    fallbackEvents,
+    open,
+  }: {
+    fallbackEvents?: (typeof event)[];
+    open: boolean;
+  }) => {
+    dialogState.fallbackEvents = fallbackEvents ?? [];
+    return open ? <div data-testid="error-report-dialog" /> : null;
+  },
 }));
 
 import { ErrorReportNotice } from '../src/components/error-report/ErrorReportNotice';
@@ -64,4 +83,16 @@ describe('ErrorReportNotice', () => {
     expect(await screen.findByText('发现问题')).toBeTruthy();
     expect(mockState.getPending).toHaveBeenCalledTimes(2);
   });
+
+  it('打开报告时保留通知快照作为对话框 fallback', async () => {
+    mockState.getPending.mockResolvedValue([event]);
+
+    render(<ErrorReportNotice />);
+    await screen.findByText('发现问题');
+
+    fireEvent.click(screen.getByRole('button', { name: '查看并报告' }));
+
+    expect(await screen.findByTestId('error-report-dialog')).toBeTruthy();
+    expect(dialogState.fallbackEvents).toEqual([event]);
+  });
 });
diff --git a/docs/technical/【技术方案】AGC错误报告与诊断上传-2026-08-31.md b/docs/technical/【技术方案】AGC错误报告与诊断上传-2026-08-31.md
index 8d19e96ab..1b68df9fe 100644
--- a/docs/technical/【技术方案】AGC错误报告与诊断上传-2026-08-31.md
+++ b/docs/technical/【技术方案】AGC错误报告与诊断上传-2026-08-31.md
@@ -13,6 +13,7 @@ AI Game Creator Shell 采用 IDEA 风格的当前进程错误报告：错误事
 - Rust 侧通过 `app_log!` 将普通文本日志同时输出到 stderr 和 AppData `diagnostics/application.log`，超出 256 KiB 滚动到 `application.previous.log`；WebView 的 console 输出通过 `append_application_log` 镜像到同一 raw log，并在客户端桥接处再次脱敏；`read_diagnostic_logs` 只读取应用级日志。
 - 报告面板只由自动诊断通知中的“查看并报告”打开，不提供聊天命令、崩溃页按钮或其他手动入口；默认选中当前快照中的全部事件，用户可取消不想提交的事件。允许填写最多 2,000 字中文描述并取消日志附件；本版本不支持截图或任意文件附件。
 - 报告面板读取当前错误快照失败时，必须明确显示“错误事件暂不可用，请关闭后重试”，不能把失败误显示为“当前没有待报告的错误”。
+- 通知中的“查看并报告”打开面板时必须保留该次通知快照；最新快照读取瞬时失败时使用这份 fallback 继续展示和提交，不能因先清空通知而丢失用户刚看到的事件。
 - Rust 是结构化错误队列的唯一真相源：`src-tauri/src/error_report/` 负责脱敏、调用点指纹、eventId、计数、100 条上限、5 秒聚合和 ack 生命周期；WebView 仅通过 Tauri bridge 上报、读取快照并保存短暂 React 展示状态，不维护第二份事件 Map。Runtime 错误上报统一使用 `source=agent-runtime`、`action=agent-runtime` 和 Agent ID 作为 page；包含 `kind=codex-app-server-*` 或 `codex-app-server-error:*` 的消息在入池前归一为稳定类别（例如 `codex-app-server-error:other`），不把 public summary 中的动态 fingerprint/长度作为分桶输入。Rust emit 只作为无状态唤醒，携带单调递增的 generation，不携带错误正文或事件 ID。
 - 错误事件先在当前进程内存池按 fingerprint 合并，经过 5 秒聚合后只发出一次非阻塞存在性唤醒；WebView 挂载、收到唤醒、重新获得焦点或恢复可见时都查询完整未 ack 快照，并在桥接暂时失败时做有限退避重试。通知支持“查看并报告”和“忽略”，同一 fingerprint 仅在新增时唤醒一次。通知不直接打开阻塞式报告面板；用户打开报告面板后，面板再读取一次完整未 ack 快照，确保提交使用打开时的最新事件。忽略只关闭当前 UI，不删除事件；提交成功后由 bridge ack/delete 选中事件。
 - 上传失败只在当前进程显示失败并允许用户再次提交，不跨重启恢复事件池，不后台自动重试。