🚀 Prepare for dual PyPI/NPM release v4.0

- Fix version consistency (PyPI: 4.0.0, NPM: 4.0.3)
- Update license format to PEP 639 compliance
- Restore NPM package components (bin/ and package.json)
- Fix NPM package name to @superclaude-org/superclaude
- Add comprehensive RELEASE_INSTRUCTIONS.md
- Update .gitignore to include NPM files
- Ready for production release on both PyPI and NPM

Co-Authored-By: Claude <noreply@anthropic.com>

.gitignore

@@ -197,7 +197,5 @@ CRUSH.md
 TODO.txt
 
 # Development artifacts (should not be in repo)
-package.json
 package-lock.json
-uv.lock
-bin/
+uv.lock