feat: make 'get' the default command

Allows 'wikitool Earth' instead of 'wikitool get Earth'.
Dynamically checks registered subcommands rather than hardcoded list.

Author: teal-bauer

cmd/root.go

@@ -12,26 +12,47 @@ var (
 )
 
 var rootCmd = &cobra.Command{
-	Use:   "wikitool",
+	Use:   "wikitool [title|url]",
 	Short: "Fetch Wikipedia content via the REST API",
 	Long: `wikitool is a command-line tool for fetching Wikipedia content.
 
 It supports all language Wikipedias and can accept either page titles
 or full Wikipedia URLs as input.
 
+When called with a title or URL directly, it fetches the page content
+(equivalent to 'wikitool get').
+
 Examples:
-  wikitool get Earth
-  wikitool get https://de.wikipedia.org/wiki/Erde
+  wikitool Earth
+  wikitool https://de.wikipedia.org/wiki/Erde
+  wikitool -L "ISO 7064"
   wikitool search "solar system" --limit 10
   wikitool languages Earth`,
 }
 
 func Execute() {
+	// Default to "get" if first arg isn't a subcommand
+	if len(os.Args) > 1 && !isSubcommand(os.Args[1]) {
+		os.Args = append([]string{os.Args[0], "get"}, os.Args[1:]...)
+	}
+
 	if err := rootCmd.Execute(); err != nil {
 		os.Exit(1)
 	}
 }
 
+func isSubcommand(arg string) bool {
+	if arg == "help" || arg == "-h" || arg == "--help" {
+		return true
+	}
+	for _, cmd := range rootCmd.Commands() {
+		if cmd.Name() == arg || cmd.HasAlias(arg) {
+			return true
+		}
+	}
+	return false
+}
+
 func init() {
 	rootCmd.PersistentFlags().StringVarP(&lang, "lang", "l", "en", "Wikipedia language code")
 	rootCmd.PersistentFlags().StringVarP(&output, "output", "o", "text", "Output format: text, json, html")