test(agent): pin harness resource formatting

packages/agent/src/harness/prompt-templates.ts

@@ -169,7 +169,7 @@ function errorMessage(error: unknown, fallback: string): string {
 	return error instanceof Error ? error.message : fallback;
 }
 
-/** Parse slash-command arguments using simple shell-style single and double quotes. */
+/** Parse an argument string using simple shell-style single and double quotes. */
 export function parseCommandArgs(argsString: string): string[] {
 	const args: string[] = [];
 	let current = "";