cleanup: remove temporary development files

- Remove .ruff.toml (not needed, project uses global config)
- Remove ALIGNMENT_ANALYSIS.md (internal development notes)

These were temporary files used during development to track
alignment with Tongyi's original implementation.

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

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

Author: yayashuxue