updated clap output

src/cli.rs

@@ -3,18 +3,29 @@ use std::path::PathBuf;
 
 /// mould: A TUI tool to generate and edit configuration files (.env, json, yaml, toml)
 #[derive(Parser, Debug)]
-#[command(author, version, about)]
+#[command(
+    author, 
+    version, 
+    about = "mould: A TUI tool to generate and edit configuration files (.env, json, yaml, toml)",
+    long_about = "mould allows you to interactively edit and generate configuration files using templates. It supports various formats including .env, JSON, YAML, and TOML. It features a modern TUI with Vim-inspired keybindings and out-of-the-box support for theming.",
+    after_help = "EXAMPLES:\n  mould .env.example\n  mould docker-compose.yml\n  mould config.template.json -o config.json"
+)]
 pub struct Cli {
     /// The input template file (e.g., .env.example, config.json.template, docker-compose.yml)
+    #[arg(required = true, value_name = "INPUT_FILE")]
     pub input: PathBuf,
 
     /// Optional output file. If not provided, it will be inferred.
-    #[arg(short, long)]
+    #[arg(short, long, value_name = "OUTPUT_FILE")]
     pub output: Option<PathBuf>,
 
     /// Override the format detection (env, json, yaml, toml)
-    #[arg(short, long)]
+    #[arg(short, long, value_name = "FORMAT", value_parser = ["env", "json", "yaml", "toml"])]
     pub format: Option<String>,
+
+    /// Increase verbosity for logging (can be used multiple times)
+    #[arg(short, long, action = clap::ArgAction::Count)]
+    pub verbose: u8,
 }
 
 /// Parses and returns the command-line arguments.