Update Angular submodule: Remove number prefixes from docs

Documentation filenames simplified to remove leading numbers:
- Files now use descriptive kebab-case names
- Updated README to reflect cleaner naming structure
- Moved swagger.json into docs folder

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: workcontrolgit