构建mars_toolkit,删除tools_for_ms

mars_toolkit/query/__init__.py

@@ -0,0 +1,18 @@
+"""
+Query Module
+
+This module provides query tools for materials science, including:
+- Materials Project database queries
+- OQMD database queries
+- Dify knowledge base retrieval
+- Web search
+"""
+
+from mars_toolkit.query.mp_query import (
+    search_material_property_from_material_project,
+    get_crystal_structures_from_materials_project,
+    get_mpid_from_formula
+)
+from mars_toolkit.query.oqmd_query import fetch_chemical_composition_from_OQMD
+from mars_toolkit.query.dify_search import retrieval_from_knowledge_base
+from mars_toolkit.query.web_search import search_online