refactor: enhance test functions and error handling in approval tests

- Updated test functions to use `execute_command` and `write_file` for improved clarity and consistency.
- Added mock patches for auto-approval callbacks to streamline testing processes.
- Enhanced error handling to assert failures directly, ensuring better test reliability.
- Maintained adherence to minimal code change principles while improving overall test structure.

Author: MervinPraison

.github/workflows/test-core.yml

@@ -34,6 +34,8 @@ jobs:
         uv pip install --system ."[ui,gradio,api,agentops,google,openai,anthropic,cohere,chat,code,realtime,call,crewai,autogen]"
         uv pip install --system duckduckgo_search
         uv pip install --system pytest pytest-asyncio pytest-cov
+        # Install knowledge dependencies from praisonai-agents
+        uv pip install --system "praisonaiagents[knowledge]"
 
     - name: Set environment variables
       run: |