added	aiagents4pharma/talk2scholars/tests/test_main_agent.py
added	aiagents4pharma/talk2scholars/tests/test_paper_download_agent.py
added	aiagents4pharma/talk2scholars/tests/test_paper_download_tools.py
added	aiagents4pharma/talk2scholars/tests/test_pdf_agent.py
added	aiagents4pharma/talk2scholars/tests/test_question_and_answer_tool.py
added	aiagents4pharma/talk2scholars/tests/test_routing_logic.py
added	aiagents4pharma/talk2scholars/tests/test_s2_agent.py
added	aiagents4pharma/talk2scholars/tests/test_s2_display.py
added	aiagents4pharma/talk2scholars/tests/test_s2_multi.py
added	aiagents4pharma/talk2scholars/tests/test_s2_query.py
added	aiagents4pharma/talk2scholars/tests/test_s2_retrieve.py
added	aiagents4pharma/talk2scholars/tests/test_s2_search.py
added	aiagents4pharma/talk2scholars/tests/test_s2_single.py
added	aiagents4pharma/talk2scholars/tests/test_state.py
added	aiagents4pharma/talk2scholars/tests/test_zotero_agent.py
added	aiagents4pharma/talk2scholars/tests/test_zotero_human_in_the_loop.py
added	aiagents4pharma/talk2scholars/tests/test_zotero_path.py
added	aiagents4pharma/talk2scholars/tests/test_zotero_read.py
added	aiagents4pharma/talk2scholars/tests/test_zotero_write.py
added	aiagents4pharma/talk2scholars/tools/__init__.py
added	aiagents4pharma/talk2scholars/tools/paper_download/__init__.py
added	aiagents4pharma/talk2scholars/tools/paper_download/abstract_downloader.py
added	aiagents4pharma/talk2scholars/tools/paper_download/arxiv_downloader.py
added	aiagents4pharma/talk2scholars/tools/paper_download/download_arxiv_input.py
added	aiagents4pharma/talk2scholars/tools/pdf/__init__.py