fix(build): accept scoped package name @valknarthing/llmx in build script

The build_npm_package.py script now accepts '@valknarthing/llmx' as a valid
--package argument and normalizes it to 'llmx' internally for processing.

This allows the workflow to use the full scoped package name for clarity
while maintaining backward compatibility with the 'llmx' identifier.

llmx-cli/scripts/build_npm_package.py

@@ -31,9 +31,9 @@ def parse_args() -> argparse.Namespace:
     parser = argparse.ArgumentParser(description="Build or stage the LLMX CLI npm package.")
     parser.add_argument(
         "--package",
-        choices=("llmx", "llmx-responses-api-proxy", "llmx-sdk"),
+        choices=("llmx", "llmx-responses-api-proxy", "llmx-sdk", "@valknarthing/llmx"),
         default="llmx",
-        help="Which npm package to stage (default: codex).",
+        help="Which npm package to stage (default: llmx).",
     )
     parser.add_argument(
         "--version",
@@ -76,6 +76,9 @@ def main() -> int:
     args = parse_args()
 
     package = args.package
+    # Normalize scoped package name to internal identifier
+    if package == "@valknarthing/llmx":
+        package = "llmx"
     version = args.version
     release_version = args.release_version
     if release_version: