diff --git a/apps/desktop-shell/scripts/check-config.mjs b/apps/desktop-shell/scripts/check-config.mjs
index ebcc675c1..45632fcd8 100644
--- a/apps/desktop-shell/scripts/check-config.mjs
+++ b/apps/desktop-shell/scripts/check-config.mjs
@@ -2874,14 +2874,15 @@ for (const snippet of [
   'set_desktop_app_badge_count',
   'badge_unavailable_response',
   'log_desktop_badge_failure',
-  'desktop app badge failed for {label}: {error}',
-  'log_desktop_badge_failure("window", "main window unavailable")',
-  'log_desktop_badge_failure("set", &error.to_string())',
+  'desktop app badge failed for {label}',
+  'log_desktop_badge_failure("window")',
+  'log_desktop_badge_failure("set")',
   'ok(request.id.clone(), json!(true))',
   '"count must be an integer between 0 and 99999"',
   '"badge unavailable"',
   'badge_unavailable_response_is_stable',
   'badge_failures_are_logged_without_exposing_native_detail',
+  'badge_failures_log_stable_label_only',
 ]) {
   if (!desktopHostBridgeBadgeSource.includes(snippet)) {
     throw new Error(`desktop shell badge module is missing ${snippet}`);
@@ -2889,7 +2890,9 @@ for (const snippet of [
 }
 if (
   desktopHostBridgeBadgeSource.includes('failed(request.id.clone(), "host_error", error.to_string())') ||
-  desktopHostBridgeBadgeSource.includes('"main window not found"')
+  desktopHostBridgeBadgeSource.includes('"main window not found"') ||
+  desktopHostBridgeBadgeSource.includes('desktop app badge failed for {label}: {error}') ||
+  desktopHostBridgeBadgeSource.includes('&error.to_string()')
 ) {
   throw new Error('desktop shell badge module must hide native window errors');
 }
diff --git a/apps/desktop-shell/src-tauri/src/host_bridge/badge.rs b/apps/desktop-shell/src-tauri/src/host_bridge/badge.rs
index c72b6d88e..f39c422d5 100644
--- a/apps/desktop-shell/src-tauri/src/host_bridge/badge.rs
+++ b/apps/desktop-shell/src-tauri/src/host_bridge/badge.rs
@@ -39,14 +39,14 @@ pub(crate) fn set_desktop_app_badge_count(
         Err(response) => return response,
     };
     let Some(window) = app.get_webview_window("main") else {
-        log_desktop_badge_failure("window", "main window unavailable");
+        log_desktop_badge_failure("window");
         return badge_unavailable_response(request);
     };
 
     match window.set_badge_count(count) {
         Ok(()) => ok(request.id.clone(), json!(true)),
-        Err(error) => {
-            log_desktop_badge_failure("set", &error.to_string());
+        Err(_error) => {
+            log_desktop_badge_failure("set");
             badge_unavailable_response(request)
         }
     }
@@ -56,11 +56,8 @@ fn badge_unavailable_response(request: &HostBridgeRequest) -> HostBridgeResponse
     failed(request.id.clone(), "host_error", "badge unavailable")
 }
 
-fn log_desktop_badge_failure(label: &str, error: &str) -> bool {
-    if !error.is_empty() {
-        eprintln!("desktop app badge failed for {label}: {error}");
-    }
-
+fn log_desktop_badge_failure(label: &str) -> bool {
+    eprintln!("desktop app badge failed for {label}");
     false
 }
 
@@ -109,13 +106,12 @@ mod tests {
 
     #[test]
     fn badge_failures_are_logged_without_exposing_native_detail() {
-        assert!(!log_desktop_badge_failure(
-            "set",
-            "private badge detail"
-        ));
-        assert!(!log_desktop_badge_failure(
-            "window",
-            "main window unavailable"
-        ));
+        assert!(!log_desktop_badge_failure("set"));
+        assert!(!log_desktop_badge_failure("window"));
+    }
+
+    #[test]
+    fn badge_failures_log_stable_label_only() {
+        assert!(!log_desktop_badge_failure("set"));
     }
 }
diff --git a/docs/project-memory/shared-memory/decision-log.md b/docs/project-memory/shared-memory/decision-log.md
index 77a2f3b1b..9beecb92c 100644
--- a/docs/project-memory/shared-memory/decision-log.md
+++ b/docs/project-memory/shared-memory/decision-log.md
@@ -3162,6 +3162,7 @@
 
 - 背景：Tauri 桌面壳的外观、角标和窗口标题能力都依赖主窗口和平台系统 API；这些能力对 H5 必须保持稳定错误语义，但开发侧也需要知道是主窗口缺失、主题读取失败还是系统 API 调用失败。
 - 决策：`apps/desktop-shell/src-tauri/src/host_bridge/appearance.rs`、`apps/desktop-shell/src-tauri/src/host_bridge/badge.rs` 和 `apps/desktop-shell/src-tauri/src/host_bridge/title.rs` 必须在主窗口缺失、主题读取失败、角标设置失败和窗口标题设置失败时分别记录 `desktop appearance failed for ...`、`desktop app badge failed for ...` 或 `desktop window title failed for ...` 日志。HostBridge 对 H5 仍只返回稳定 `appearance unavailable`、`badge unavailable` 或 `window title unavailable`，不透传系统错误、窗口内部信息或平台细节。
+- 2026-06-21 调整：桌面角标能力失败日志只记录 `desktop app badge failed for <stage>` 固定标签，不输出主窗口缺失文本、Tauri `set_badge_count` 错误或其它平台细节；配置检查拒绝 `badge.rs` 重新拼接 `: {error}` 或 `&error.to_string()`。
 - 验证方式：`cargo test --manifest-path apps/desktop-shell/src-tauri/Cargo.toml host_bridge::appearance`、`cargo test --manifest-path apps/desktop-shell/src-tauri/Cargo.toml host_bridge::badge`、`cargo test --manifest-path apps/desktop-shell/src-tauri/Cargo.toml host_bridge::title`、`npm run desktop-shell:typecheck`、`npm run check:native-shells`、`npm run check:encoding`、`git diff --check`。
 
 ## 2026-06-20 桌面壳导航系统异常必须可观测
diff --git a/docs/【前端架构】ExpoReactNative与Tauri宿主壳方案-2026-06-17.md b/docs/【前端架构】ExpoReactNative与Tauri宿主壳方案-2026-06-17.md
index 8b0dca854..2b264f50f 100644
--- a/docs/【前端架构】ExpoReactNative与Tauri宿主壳方案-2026-06-17.md
+++ b/docs/【前端架构】ExpoReactNative与Tauri宿主壳方案-2026-06-17.md
@@ -354,7 +354,7 @@ GameBridge 禁止：
 
 2026-06-20 追加：桌面壳文件导入导出的系统异常必须可观测。Tauri dialog 路径转换失败、后台文件读写任务失败或任务 join 失败时，桌面壳必须分别记录 `desktop file export failed for ...` 或 `desktop file import failed for ...` 日志；HostBridge 回包仍只暴露稳定 `file export unavailable` 或 `file import unavailable` 语义，不透传本地路径、系统错误或线程细节。用户取消系统文件对话框仍返回 `cancelled`，不记录为异常。
 
-2026-06-20 追加：桌面壳窗口状态小能力的系统异常必须可观测。Tauri 主窗口缺失、主题读取失败、角标设置失败或窗口标题设置失败时，桌面壳必须分别记录 `desktop appearance failed for ...`、`desktop app badge failed for ...` 或 `desktop window title failed for ...` 日志；HostBridge 回包仍只暴露稳定 `appearance unavailable`、`badge unavailable` 或 `window title unavailable` 语义，不透传系统错误、窗口内部信息或平台细节。
+2026-06-20 追加：桌面壳窗口状态小能力的系统异常必须可观测。Tauri 主窗口缺失、主题读取失败、角标设置失败或窗口标题设置失败时，桌面壳必须分别记录 `desktop appearance failed for ...`、`desktop app badge failed for ...` 或 `desktop window title failed for ...` 日志；HostBridge 回包仍只暴露稳定 `appearance unavailable`、`badge unavailable` 或 `window title unavailable` 语义，不透传系统错误、窗口内部信息或平台细节。2026-06-21 调整：桌面角标失败日志只记录 `desktop app badge failed for <stage>` 固定标签，不把 Tauri `set_badge_count` 错误详情或主窗口缺失细节写入 stderr。
 
 2026-06-20 追加：桌面壳导航系统异常必须可观测。Tauri 外链打开失败、同源 H5 route 导航失败、WebView reload 失败或主窗口缺失时，桌面壳必须记录 `desktop navigation failed for ...` 日志；HostBridge 回包仍只暴露稳定 `external URL cannot be opened`、`native page unavailable` 或 `webview reload unavailable` 语义，不透传系统错误、窗口内部信息或平台细节。