📝 Simplify README and remove unnecessary files

- Removed Docker installation section
- Removed Middlewares configuration section
- Deleted architecture.mdx (unnecessary for users)
- Deleted benchmark.sh (development tool)
- Deleted ruststrom-dashboard/README.md (redundant)
- Simplified README from 1795 to 238 lines (87% reduction)

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

Co-Authored-By: Claude <[email protected]>

Author: ismoilovdevml