diff --git a/apps/desktop-shell/scripts/check-config.mjs b/apps/desktop-shell/scripts/check-config.mjs
index 78478214f..84e626415 100644
--- a/apps/desktop-shell/scripts/check-config.mjs
+++ b/apps/desktop-shell/scripts/check-config.mjs
@@ -2288,6 +2288,7 @@ const requiredRustHostSnippets = [
   'window.history.replaceState',
   "window.addEventListener('popstate'",
   '__genarrativeDesktopHistoryIndex',
+  "console.warn('desktop navigation state sync failed', error)",
   'file.imageDropped',
   'emit_desktop_image_drop_event(&drop_window, paths, drop_position)',
   'app.notification().builder()',
@@ -2801,6 +2802,8 @@ for (const blockedLifecycleSnippet of [
   'let _ = open_normalized_desktop_external_url(',
   'let _ = emit_desktop_lifecycle_event(&close_window',
   'let _ = close_window.hide()',
+  'catch (_error) {}',
+  'catch (error) {}',
 ]) {
   if (rustHostSource.includes(blockedLifecycleSnippet)) {
     throw new Error(
diff --git a/apps/desktop-shell/src-tauri/src/shell/navigation.rs b/apps/desktop-shell/src-tauri/src/shell/navigation.rs
index f154d9888..d02e7d306 100644
--- a/apps/desktop-shell/src-tauri/src/shell/navigation.rs
+++ b/apps/desktop-shell/src-tauri/src/shell/navigation.rs
@@ -78,7 +78,9 @@ pub(crate) fn desktop_navigation_state_script() -> Result<String, serde_json::Er
           const replaceCurrentState = () => {{
             try {{
               originalReplaceState(stateWithIndex(window.history.state, currentIndex), '', window.location.href);
-            }} catch (_error) {{}}
+            }} catch (error) {{
+              console.warn('desktop navigation state sync failed', error);
+            }}
           }};
 
           window.__GENARRATIVE_DESKTOP_EMIT_NAVIGATION_STATE__ = emitNavigationState;
@@ -365,6 +367,7 @@ mod tests {
         assert!(script.contains("(currentIndex > 0)"));
         assert!(script.contains("\\\"canGoBack\\\":true"));
         assert!(script.contains("\\\"canGoBack\\\":false"));
+        assert!(script.contains("console.warn('desktop navigation state sync failed', error)"));
         assert!(script.contains("window.__GENARRATIVE_DESKTOP_NAVIGATION_STATE_INSTALLED__"));
     }
 }
diff --git a/docs/project-memory/shared-memory/decision-log.md b/docs/project-memory/shared-memory/decision-log.md
index 459772a6a..cf303baae 100644
--- a/docs/project-memory/shared-memory/decision-log.md
+++ b/docs/project-memory/shared-memory/decision-log.md
@@ -2909,6 +2909,13 @@
 - 影响范围：`apps/desktop-shell/src-tauri/src/shell/lifecycle.rs`、`apps/desktop-shell/scripts/check-config.mjs`。
 - 验证方式：`cargo test --manifest-path apps/desktop-shell/src-tauri/Cargo.toml shell::lifecycle`、`npm run desktop-shell:typecheck`、`npm run check:native-shells`、`npm run check:encoding`、`git diff --check`。
 
+## 2026-06-20 桌面壳返回栈状态同步失败不可静默
+
+- 背景：Tauri 桌面壳 `navigation.canGoBack` 注入脚本会把当前 H5 history index 写入 `window.history.state`；如果 `replaceState(...)` 因页面状态异常或浏览器限制失败后静默吞掉，H5 返回栈事件可能漂移且无排查线索。
+- 决策：`desktop_navigation_state_script()` 的 `replaceCurrentState()` catch 路径必须输出 `desktop navigation state sync failed` 浏览器 console 警告；配置检查拒绝该注入脚本重新出现空 catch。
+- 影响范围：`apps/desktop-shell/src-tauri/src/shell/navigation.rs`、`apps/desktop-shell/scripts/check-config.mjs`。
+- 验证方式：`cargo test --manifest-path apps/desktop-shell/src-tauri/Cargo.toml shell::navigation`、`npm run desktop-shell:typecheck`、`npm run check:native-shells`、`npm run check:encoding`、`git diff --check`。
+
 ## 2026-06-20 移动壳 EAS 原生包构建 profile
 
 - 背景：移动壳已能通过 Expo managed config 和 Metro production bundle smoke，但缺少原生安装包构建 profile；如果只保留 `expo export`，无法证明 Android / iOS 壳有进入原生分发链路的配置。