refactor!: Run scripts using dev run

Add a new subcommand `run` for running a script. This removes
arguments for running a script from the top-level command and therefore
allows to add other subcommands in the future without them conflicting
with script names.

src/bin/dev/clap.rs

@@ -13,18 +13,23 @@ pub fn build_clap_app() -> Command {
                 .action(ArgAction::SetTrue)
                 .help("List available scripts in alphabetical order."),
         )
-        .arg(
-            Arg::new("script_name")
-                .action(ArgAction::Set)
-                .value_name("SCRIPT")
-                .help("Name of the script to execute"),
-        )
-        .arg(
-            Arg::new("args")
-                .action(ArgAction::Append)
-                .value_name("ARGS")
-                .help("Arguments to be passed to the script")
-                .trailing_var_arg(true)
-                .allow_hyphen_values(true),
+        .subcommand(
+            Command::new("run")
+                .about("Run a script")
+                .arg(
+                    Arg::new("script_name")
+                        .action(ArgAction::Set)
+                        .value_name("SCRIPT")
+                        .help("Name of the script to execute")
+                        .required(true),
+                )
+                .arg(
+                    Arg::new("args")
+                        .action(ArgAction::Append)
+                        .value_name("ARGS")
+                        .help("Arguments to be passed to the script")
+                        .trailing_var_arg(true)
+                        .allow_hyphen_values(true),
+                ),
         )
 }

src/bin/dev/main.rs

@@ -30,21 +30,22 @@ fn main() -> Result<ExitCode, anyhow::Error> {
             println!("{script}");
         }
 
-        Ok(ExitCode::SUCCESS)
-    } else {
-        if !matches.contains_id("script_name") {
+        return Ok(ExitCode::SUCCESS);
+    }
+
+    match matches.subcommand() {
+        Some(("run", args)) => run(args, config),
+        _ => {
             app.print_help()?;
-            return Ok(ExitCode::SUCCESS);
+            Ok(ExitCode::SUCCESS)
         }
-
-        run(matches, config)
     }
 }
 
-fn run(matches: ArgMatches, config: Config) -> Result<ExitCode, anyhow::Error> {
+fn run(matches: &ArgMatches, config: Config) -> Result<ExitCode, anyhow::Error> {
     #[expect(
         clippy::unwrap_used,
-        reason = "That `script_name` exists was checked above."
+        reason = "`script_name` is a required parameter, its existence is checked by clap."
     )]
     let script_name = matches.get_one::<String>("script_name").unwrap();
     let args = matches