fix(smartcli): Allow passing argv to startParse and improve getUserArgs Deno/runtime handling; update tests and add license

ts/smartcli.classes.smartcli.ts

@@ -123,10 +123,11 @@ export class Smartcli {
 
   /**
    * start the process of evaluating commands
+   * @param testArgv - Optional argv override for testing (bypasses automatic runtime detection)
    */
-  public startParse(): void {
+  public startParse(testArgv?: string[]): void {
     // Get user arguments, properly handling Node.js, Deno (run/compiled), and Bun
-    const userArgs = getUserArgs();
+    const userArgs = testArgv ? getUserArgs(testArgv) : getUserArgs();
     const parsedYArgs = plugins.yargsParser(userArgs);
     const wantedCommand = parsedYArgs._[0];