Add multi-agent papers on scientific research

Thank you for maintaining this excellent collection of multi-agent papers! This PR adds four relevant multi-agent papers from our lab that we believe would be valuable additions to the list: **Papers Added:** 1. **GenoTEX: An LLM Agent Benchmark for Automated Gene Expression Data Analysis** (arXiv:2406.15341) - Accepted as Oral paper at MLCB 2025 - An expert-curated benchmark for end-to-end analysis on real-world genomic datasets - Added to Science section 2. **GenoMAS: A Multi-Agent Framework for Scientific Discovery via Code-Driven Gene Expression Analysis** (arXiv:2507.21035) - Six specialized LLM agents with typed message-passing protocols - Guided-planning framework for genomic data analysis - Added to Science section 3. **Achilles Heel of Distributed Multi-Agent Systems** (arXiv:2504.07461) - Research on trustworthy challenges of distributed multi-agent systems - Added to Multi-Agent Collaboration & System Design section 4. **The Landscape of Agentic Reinforcement Learning for LLMs: A Survey** (arXiv:2509.02547) - Comprehensive survey on agentic RL for LLMs with multi-agent aspects - Added to Evaluation & Model Improvement section All entries follow the repository's standard format conventions. Please let me know if any adjustments are needed!