feat: add error handling for Zen browser AppleScript

VoiceInk/Resources/zenURL.scpt

@@ -1,13 +1,25 @@
-tell application "Zen Browser"
+try
-	activate
+	tell application "Zen Browser"
-	delay 0.05
+		try
-	tell application "System Events"
+			activate
-		keystroke "l" using command down
+			delay 0.1
-		delay 0.05
+			tell application "System Events"
-		keystroke "c" using command down
+				try
-		delay 0.05
+					keystroke "l" using command down
-		keystroke tab
+					delay 0.1
+					keystroke "c" using command down
+					delay 0.1
+					keystroke tab
+				on error errMsg
+					return "ERROR: System Events failed: " & errMsg
+				end try
+			end tell
+			delay 0.1
+			return (the clipboard as text)
+		on error errMsg
+			return "ERROR: Zen Browser activation failed: " & errMsg
+		end try
 	end tell
-	delay 0.05
+on error errMsg
-	return (the clipboard as text)
+	return "ERROR: Zen Browser application not available: " & errMsg
-end tell 
+end try