Refactor main_v2.py to remove unused tools and agents, replacing them with the new SmartSearchTool for improved search functionality. Update prompt template loading to use the modified YAML file. Clean up imports and enhance overall code organization for better maintainability.

Enhance agent functionality in main_v2.py by adding WikipediaSearchTool and updating DuckDuckGoSearchTool and VisitWebpageTool parameters. Modify agent initialization to accommodate new tools and increase max results and output length. Update requirements.txt to include Wikipedia-API dependency. Refactor imports for better organization across agent modules.