- Add KnowledgeConfig class with results_limit, score_threshold, metadata_filter
- Add knowledge_config field to Agent
- Update Knowledge.query() to forward filter and score_threshold to storage
- Update Crew.query_knowledge() to accept and forward filter params
- Fix BaseKnowledgeSource._save_documents() to pass self.metadata to storage
- Wire Agent.execute_task() to use knowledge_config for both agent and crew queries
- Add 10 tests covering all changes
Co-Authored-By: João <joao@crewai.com>
