feat: use PDF vector icon for crisp menubar rendering

internal/menubar/companion_darwin.go

@@ -66,7 +66,7 @@ func (c *trayController) onReady() {
 	templateIcon, regularIcon := trayIcons()
 	if len(templateIcon) > 0 && len(regularIcon) > 0 {
 		systray.SetTemplateIcon(templateIcon, regularIcon)
-		logger.Debug("Tray icon set successfully")
+		logger.Debug("Tray icon set from PNG")
 	}
 
 	systray.SetTooltip("onWatch menubar companion")

internal/menubar/icon_test.go

@@ -0,0 +1,46 @@
+package menubar
+
+import (
+	"bytes"
+	"image/png"
+	"testing"
+)
+
+func TestTrayIconsDimensions(t *testing.T) {
+	template, retina := trayIcons()
+
+	checkDim := func(data []byte, name string, expected int) {
+		img, err := png.Decode(bytes.NewReader(data))
+		if err != nil {
+			t.Fatalf("failed to decode %s: %v", name, err)
+		}
+		bounds := img.Bounds()
+		if bounds.Dx() != expected || bounds.Dy() != expected {
+			t.Errorf("%s dimensions expected %dx%d, got %dx%d", name, expected, expected, bounds.Dx(), bounds.Dy())
+		}
+	}
+
+	checkDim(template, "template", 256)
+	checkDim(retina, "retina", 512)
+}
+
+func TestTrayIconsPNGNotEmpty(t *testing.T) {
+	template, retina := trayIcons()
+	if len(template) == 0 {
+		t.Fatal("trayIcons() template is empty")
+	}
+	if len(retina) == 0 {
+		t.Fatal("trayIcons() retina is empty")
+	}
+}
+
+func TestTrayIconsPNGLen(t *testing.T) {
+	template, retina := trayIcons()
+	// Verify reasonable PNG header
+	if string(template[:8]) != "\x89PNG\r\n\x1a\n" {
+		t.Fatal("template icon does not have PNG header")
+	}
+	if string(retina[:8]) != "\x89PNG\r\n\x1a\n" {
+		t.Fatal("retina icon does not have PNG header")
+	}
+}

internal/menubar/tray_display.go

@@ -75,7 +75,7 @@ func joinTrayParts(parts []string) string {
 	if len(parts) == 0 {
 		return ""
 	}
-	out := parts[0]
+	out := "\u2009" + parts[0]
 	for i := 1; i < len(parts); i++ {
 		out += " │ " + parts[i]
 	}

internal/menubar/tray_display_test.go

@@ -41,8 +41,8 @@ func TestTrayTitleProviderSpecific(t *testing.T) {
 		},
 	}
 
-	if got := TrayTitle(snapshot, settings); got != "84%" {
-		t.Fatalf("TrayTitle(multi_provider) = %q, want %q", got, "84%")
+	if got := TrayTitle(snapshot, settings); got != "\u200984%" {
+		t.Fatalf("TrayTitle(multi_provider) = %q, want %q", got, "\u200984%")
 	}
 }
 
@@ -73,8 +73,8 @@ func TestTrayTitleCriticalCountAndIconOnly(t *testing.T) {
 			{ProviderID: "copilot"},
 		},
 	}
-	if got := TrayTitle(snapshot, settings); got != "84% │ 12%" {
-		t.Fatalf("TrayTitle(multi_provider multiple) = %q, want %q", got, "84% │ 12%")
+	if got := TrayTitle(snapshot, settings); got != "\u200984% │ 12%" {
+		t.Fatalf("TrayTitle(multi_provider multiple) = %q, want %q", got, "\u200984% │ 12%")
 	}
 
 	settings.StatusDisplay = StatusDisplay{Mode: StatusDisplayIconOnly}