diff --git a/cmd/arcrun-tray/build-mac.sh b/cmd/arcrun-tray/build-mac.sh
index 10f06e9..0fffc92 100755
--- a/cmd/arcrun-tray/build-mac.sh
+++ b/cmd/arcrun-tray/build-mac.sh
@@ -14,7 +14,7 @@ echo "① 編 collector（同綑執行檔）"
 ( cd ../.. && go build -o "cmd/arcrun-tray/arcrun-collector" . )
 
 echo "② fyne package"
-go run fyne.io/fyne/v2/cmd/fyne@latest package -os darwin -icon icon.png -name "Arcrun RAG"
+go run fyne.io/fyne/v2/cmd/fyne@latest package -os darwin -icon icon.png -name "Arcrun RAG" -appID dev.arcrun.rag.tray
 
 APP="Arcrun RAG.app"
 PLIST="$APP/Contents/Info.plist"
@@ -26,5 +26,8 @@ echo "③ LSUIElement=true（托盤唯一指示器，隱 Dock icon——leo 07-2
 echo "④ 同綑 collector 進 app bundle（托盤 collectorBinPath 找同層）"
 cp arcrun-collector "$APP/Contents/MacOS/arcrun-collector"
 
+echo "⑤ ad-hoc 重簽（Apple Silicon：改過 plist/塞過檔必重簽，否則 launchd 拒開 error 162——07-24 真機實撞）"
+codesign --force --deep -s - "$APP"
+
 echo "✅ 完成：$APP"
 echo "驗法：open '$APP' → 選單列出現 icon、Dock **不出現** icon → 選單列出資料夾清單"
diff --git a/cmd/arcrun-tray/dock_darwin.go b/cmd/arcrun-tray/dock_darwin.go
new file mode 100644
index 0000000..d1efd1c
--- /dev/null
+++ b/cmd/arcrun-tray/dock_darwin.go
@@ -0,0 +1,24 @@
+//go:build darwin
+
+// dock_darwin.go — 托盤唯一指示器（leo 07-24 裁決）的 macOS 實作。
+//
+// 真機實測（07-24 第三枚坑）：Info.plist 的 LSUIElement=true 會被 fyne/glfw 啟動時
+// 強制的 Regular activation policy 蓋掉（lsappinfo 實測 ApplicationType=Foreground），
+// Dock icon 照樣出現。唯一可靠解＝app 起來後 runtime 直接把 policy 切成 Accessory。
+package main
+
+/*
+#cgo CFLAGS: -x objective-c
+#cgo LDFLAGS: -framework AppKit
+#import <AppKit/AppKit.h>
+static void arcrunHideDock(void) {
+	dispatch_async(dispatch_get_main_queue(), ^{
+		[NSApp setActivationPolicy:NSApplicationActivationPolicyAccessory];
+	});
+}
+*/
+import "C"
+
+// hideDockIcon 把 app 切成 Accessory（選單列有、Dock 無）。須在 NSApp 初始化後呼叫
+// （掛在 fyne Lifecycle SetOnStarted）。
+func hideDockIcon() { C.arcrunHideDock() }
diff --git a/cmd/arcrun-tray/dock_other.go b/cmd/arcrun-tray/dock_other.go
new file mode 100644
index 0000000..e1dab88
--- /dev/null
+++ b/cmd/arcrun-tray/dock_other.go
@@ -0,0 +1,6 @@
+//go:build !darwin
+
+package main
+
+// hideDockIcon 在非 macOS 平台是 no-op（Windows 系統匣本來就不佔工作列）。
+func hideDockIcon() {}
diff --git a/cmd/arcrun-tray/icon.png b/cmd/arcrun-tray/icon.png
new file mode 100644
index 0000000..ec864e0
Binary files /dev/null and b/cmd/arcrun-tray/icon.png differ
diff --git a/cmd/arcrun-tray/main.go b/cmd/arcrun-tray/main.go
index e00cf03..318b219 100644
--- a/cmd/arcrun-tray/main.go
+++ b/cmd/arcrun-tray/main.go
@@ -256,6 +256,9 @@ func main() {
 		desk.SetSystemTrayIcon(theme.StorageIcon()) // TODO 換品牌 icon（leo logo 進行中）；Mac 建議 template 單色
 	}
 	rebuildTray() // 開機即建初始選單（否則第一次狀態回呼前選單是空的）
+	// 托盤唯一指示器（leo 07-24 裁決）：NSApp 起來後把 activation policy 切 Accessory
+	//（plist LSUIElement 會被 fyne/glfw 蓋掉——07-24 真機實測第三枚坑，見 dock_darwin.go）
+	a.Lifecycle().SetOnStarted(func() { hideDockIcon() })
 	refreshTray := rebuildTray
 
 	// 狀態變更 → 刷新 tray 文案（回呼在 supervisor goroutine，切回 UI thread）