fix(cli): restore detailed help output

Author: Test User

src/main.rs

@@ -5,10 +5,18 @@ use clap::Parser;
 
 use git_workers::app;
 
+/// Command-line arguments for Git Workers
+///
+/// Currently supports minimal CLI arguments as the application is primarily
+/// interactive. Future versions may add support for direct command execution.
 #[derive(Parser)]
 #[command(name = "gw")]
 #[command(about = "Interactive Git Worktree Manager", long_about = None)]
 struct Cli {
+    /// Print version information and exit
+    ///
+    /// When specified, prints the version number from Cargo.toml and exits
+    /// without entering the interactive mode.
     #[arg(short, long)]
     version: bool,
 }
@@ -24,3 +32,20 @@ fn main() -> Result<()> {
 
     app::run()
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use clap::CommandFactory;
+
+    #[test]
+    fn test_help_includes_version_description() {
+        let mut command = Cli::command();
+        let help = command.render_long_help().to_string();
+
+        assert!(help.contains("Print version information and exit"));
+        assert!(
+            help.contains("When specified, prints the version number from Cargo.toml and exits")
+        );
+    }
+}