diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs
index 53441925d..40afd5dad 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs
@@ -1689,7 +1689,9 @@ pub(crate) async fn continue_design_agent_session(
         input,
         capture,
         |event| {
-            let _ = app.emit("design-agent-update", event);
+            if let Err(error) = app.emit("design-agent-update", event) {
+                app_log!("design_agent.update.emit_failed detail={error}");
+            }
         },
     )
     .await
@@ -1716,7 +1718,9 @@ pub(crate) async fn decide_design_phase(
         approved,
         capture,
         |event| {
-            let _ = app.emit("design-agent-update", event);
+            if let Err(error) = app.emit("design-agent-update", event) {
+                app_log!("design_agent.update.emit_failed detail={error}");
+            }
         },
     )
     .await
diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/design_tools.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/design_tools.rs
index 5237b0715..796dbdd21 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/design_tools.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/design_tools.rs
@@ -551,7 +551,7 @@ pub(crate) fn import_design_workspace_file(
 ) -> Result<String, String> {
     let root = PathBuf::from(project_path.trim());
     let relative_path = import_design_workspace_file_at(&root, &file_name, &bytes)?;
-    let _ = app.emit(
+    if let Err(error) = app.emit(
         "design-agent-update",
         serde_json::json!({
             "projectPath": root.to_string_lossy(),
@@ -561,7 +561,9 @@ pub(crate) fn import_design_workspace_file(
             "text": null,
             "view": null,
         }),
-    );
+    ) {
+        app_log!("design_agent.workspace.emit_failed detail={error}");
+    }
     Ok(relative_path)
 }
 
diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/generation/loop_orchestration.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/generation/loop_orchestration.rs
index c8612377b..828d206b8 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/generation/loop_orchestration.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/generation/loop_orchestration.rs
@@ -16,14 +16,19 @@ impl<'a> AgentProgressEmitter<'a> {
     }
 
     fn emit(&self, stage: &str, message: &str) {
-        let _ = self.app.emit(
+        if let Err(error) = self.app.emit(
             "game-creator-agent-progress",
             GameCreatorAgentProgressEvent {
                 project_path: self.project_path.clone(),
                 stage: stage.to_string(),
                 message: message.to_string(),
             },
-        );
+        ) {
+            app_log!(
+                "agent.generation.progress.emit_failed stage={} detail={error}",
+                stage
+            );
+        }
     }
 }
 
diff --git a/apps/ai-game-creator-shell/src-tauri/src/auth_session.rs b/apps/ai-game-creator-shell/src-tauri/src/auth_session.rs
index 8428740fe..680d0ef6a 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/auth_session.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/auth_session.rs
@@ -795,7 +795,12 @@ fn auth_state_view(
 }
 
 fn emit_auth_state(app: &tauri::AppHandle, view: &ClientAuthStateView) {
-    let _ = app.emit(CLIENT_AUTH_STATE_CHANGED_EVENT, view.clone());
+    if let Err(error) = app.emit(CLIENT_AUTH_STATE_CHANGED_EVENT, view.clone()) {
+        app_log!(
+            "auth_session.state.emit_failed status={} detail={error}",
+            view.status
+        );
+    }
 }
 
 fn phone_is_valid(phone: &str) -> bool {
diff --git a/apps/ai-game-creator-shell/src-tauri/src/commands/desktop.rs b/apps/ai-game-creator-shell/src-tauri/src/commands/desktop.rs
index fdf1bd148..151fc6760 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/commands/desktop.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/commands/desktop.rs
@@ -1215,7 +1215,7 @@ pub(crate) async fn upload_local_project_game_package(
             session_identity: None,
         },
         move |received_bytes, total_bytes| {
-            let _ = emit_handle.emit(
+            if let Err(error) = emit_handle.emit(
                 crate::game_package_upload::GAME_PACKAGE_UPLOAD_PROGRESS_EVENT,
                 crate::game_package_upload::progress_event_payload(
                     &progress_version_id,
@@ -1225,10 +1225,15 @@ pub(crate) async fn upload_local_project_game_package(
                     received_bytes,
                     total_bytes,
                 ),
-            );
+            ) {
+                app_log!(
+                    "game_package_upload.progress.emit_failed versionId={} detail={error}",
+                    progress_version_id
+                );
+            }
         },
         move || {
-            let _ = verify_handle.emit(
+            if let Err(error) = verify_handle.emit(
                 crate::game_package_upload::GAME_PACKAGE_UPLOAD_PROGRESS_EVENT,
                 crate::game_package_upload::progress_event_payload(
                     &verify_version_id,
@@ -1238,7 +1243,12 @@ pub(crate) async fn upload_local_project_game_package(
                     0,
                     0,
                 ),
-            );
+            ) {
+                app_log!(
+                    "game_package_upload.verify.emit_failed versionId={} detail={error}",
+                    verify_version_id
+                );
+            }
         },
     )
     .await
diff --git a/apps/ai-game-creator-shell/src-tauri/src/error_report/notifications.rs b/apps/ai-game-creator-shell/src-tauri/src/error_report/notifications.rs
index b6f8bb86d..58f7a1f8b 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/error_report/notifications.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/error_report/notifications.rs
@@ -36,12 +36,17 @@ pub(crate) fn schedule_notification() {
         let (events, current_generation) = snapshot_with_generation();
         LAST_EMITTED_GENERATION.store(current_generation, Ordering::Release);
         if !events.is_empty() {
-            let _ = handle.emit(
+            if let Err(error) = handle.emit(
                 "error-report-updated",
                 serde_json::json!({
                     "generation": current_generation,
                 }),
-            );
+            ) {
+                let _ = crate::append_application_log_line(&format!(
+                    "RUST error_report::notifications: error_report.notification.emit_failed generation={} detail={error}",
+                    current_generation
+                ));
+            }
         }
         if let Some(active) = TIMER_ACTIVE.get() {
             *active
diff --git a/apps/ai-game-creator-shell/src-tauri/src/game_distribution_publish.rs b/apps/ai-game-creator-shell/src-tauri/src/game_distribution_publish.rs
index a5ec62dc8..1accf3094 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/game_distribution_publish.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/game_distribution_publish.rs
@@ -1286,7 +1286,7 @@ fn emit_publish_progress(
     received_bytes: u64,
     total_bytes: u64,
 ) {
-    let _ = app.emit(
+    if let Err(error) = app.emit(
         PACKAGE_UPLOAD_PROGRESS_EVENT,
         crate::game_package_upload::progress_event_payload(
             version_id,
@@ -1296,7 +1296,14 @@ fn emit_publish_progress(
             received_bytes,
             total_bytes,
         ),
-    );
+    ) {
+        app_log!(
+            "game_distribution.publish_progress.emit_failed publishId={} versionId={} phase={} detail={error}",
+            publish_id,
+            version_id,
+            phase
+        );
+    }
 }
 
 #[tauri::command]
diff --git a/apps/ai-game-creator-shell/src-tauri/src/plugin_host/desktop.rs b/apps/ai-game-creator-shell/src-tauri/src/plugin_host/desktop.rs
index b1856306d..b403d7ca5 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/plugin_host/desktop.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/plugin_host/desktop.rs
@@ -153,7 +153,12 @@ pub(crate) async fn set_agc_plugin_project_path(
 }
 
 fn emit_plugin_state_changed(app: &tauri::AppHandle, host: &PluginHost) {
-    if let Ok(extensions) = host.list_extensions() {
-        let _ = app.emit(AGC_PLUGIN_STATE_CHANGED_EVENT, extensions);
+    match host.list_extensions() {
+        Ok(extensions) => {
+            if let Err(error) = app.emit(AGC_PLUGIN_STATE_CHANGED_EVENT, extensions) {
+                app_log!("agc.plugin_state.emit_failed detail={error}");
+            }
+        }
+        Err(error) => app_log!("agc.plugin_state.list_failed detail={error}"),
     }
 }
diff --git a/apps/ai-game-creator-shell/src-tauri/src/workspace_preferences.rs b/apps/ai-game-creator-shell/src-tauri/src/workspace_preferences.rs
index c9ee47a32..d13c0995f 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/workspace_preferences.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/workspace_preferences.rs
@@ -258,7 +258,9 @@ fn update_preferences_for_app(
         }
         write_preferences_at(&path, next)
     })?;
-    let _ = app.emit(WORKSPACE_PREFERENCES_CHANGED_EVENT, snapshot.clone());
+    if let Err(error) = app.emit(WORKSPACE_PREFERENCES_CHANGED_EVENT, snapshot.clone()) {
+        app_log!("workspace_preferences.emit_failed detail={error}");
+    }
     Ok(snapshot)
 }
 
diff --git a/docs/project-memory/shared-memory/pitfalls.md b/docs/project-memory/shared-memory/pitfalls.md
index 2a20eeb37..fb7d47f6c 100644
--- a/docs/project-memory/shared-memory/pitfalls.md
+++ b/docs/project-memory/shared-memory/pitfalls.md
@@ -22,6 +22,8 @@ MCP stdio 收到非法 JSON 时，JSON-RPC `-32700` 响应也要保留解析器
 
 Direct 的 Tauri 进度、活动回合和 manifest 事件不能忽略 `app.emit` 返回值；GUI IPC 投递失败时必须写入应用诊断日志，否则用户只会看到“没有中间过程”而诊断包没有传输失败事实。
 
+同一边界适用于发布进度、插件状态、认证状态、工作区偏好、错误报告通知和策划 Agent 事件；所有 GUI 事件出口都要保留 emit 错误正文，不能只让业务操作继续返回成功。
+
 ## 2026-10-03 AGC 随包 plugins 的 feature 档位必须与消费方一致，且门禁会因 build.rs 未重跑而假通过
 
 - **现象**：Windows 本机 `npm run check:generated-bindings`（`npm run lint` 链内，`scripts/check-repository-ci.sh` 的 Repository checks 也走它）在 `build.rs:167:29` panic：`插件随包资源校验失败：随包插件存在未声明文件：.../src-tauri/resources/plugins/agc-godot-editor/native/gdextension/bin/win-x64/agc_godot_editor.dll（目标 x86_64-pc-windows-msvc 与当前 feature 组合不允许；请先执行随包资源准备步骤）`；树上换成 `agc-unity-editor/dotnet/publish/win-x64/Agc.Unity.Attach.exe` 时报同一类错。反向还有更隐蔽的形态：门禁 2 秒就 exit 0 说「通过」，但 tree 上其实带着编辑器产物。