[gouyt13]

Summary

Replace the logo in the README and documentation homepage with the supplied artwork, and use it in the documentation header.

Call the library's indexes IVF-RaBitQ and HNSW-RaBitQ throughout the documentation, navigation, benchmark labels and figures so readers can distinguish them from the generic algorithms. Keep API names, benchmark method IDs, baseline names and measurement data unchanged. Preserve existing section links with explicit HTML anchors.

Testing

• Strict MkDocs build passed.
• Python formatting and lint checks passed, including the benchmark label definitions.
• Benchmark protocol tests: 12 passed.
• Regenerated the homepage figure from the committed CSVs without rerunning measurements.
• Checked local Markdown links, SVG XML, logo copies, and all five preserved anchors in the built site.
• Checked anchor rendering with and without the Markdown attr_list extension.
• git diff --check passed.