Fix duplicate output on CLI help screen (#496)

* remove duplication

* add changeset

* fix formatting

.changeset/wide-eyes-relax.md

@@ -0,0 +1,11 @@
+---
+'task-master-ai': patch
+---
+
+Fix duplicate output on CLI help screen
+
+- Prevent the Task Master CLI from printing the help screen more than once when using `-h` or `--help`.
+- Removed redundant manual event handlers and guards for help output; now only the Commander `.helpInformation` override is used for custom help.
+- Simplified logic so that help is only shown once for both "no arguments" and help flag flows.
+- Ensures a clean, branded help experience with no repeated content.
+- Fixes #339

scripts/modules/commands.js

@@ -486,11 +486,6 @@ function registerCommands(programInstance) {
 		process.exit(1);
 	});
 
-	// Default help
-	programInstance.on('--help', function () {
-		displayHelp();
-	});
-
 	// parse-prd command
 	programInstance
 		.command('parse-prd')
@@ -2366,14 +2361,7 @@ function setupCLI() {
 			return 'unknown'; // Default fallback if package.json fails
 		})
 		.helpOption('-h, --help', 'Display help')
-		.addHelpCommand(false) // Disable default help command
+		.addHelpCommand(false); // Disable default help command
-		.on('--help', () => {
-			displayHelp(); // Use your custom help display instead
-		})
-		.on('-h', () => {
-			displayHelp();
-			process.exit(0);
-		});
 
 	// Modify the help option to use your custom display
 	programInstance.helpInformation = () => {