fix(tools): enhance execute_terminal docstring to clarify VM command execution

Limit tool output to last 10k characters

Fix terminal tool to return output

Run terminal commands in background

docs: enforce lookup behavior

fix: correct terminal description from Linux to Ubuntu

Update document upload logic and extend command execution timeout to 30 seconds

Add asynchronous VM execution and update prompt

Add document upload support and update prompt

Refactor execute_terminal function to set a fixed timeout and improve command validation

Add persistent VM execution

Update docstring to specify execution environment as Linux terminal

Update docstring to clarify execution environment for terminal commands

Reduce timeout for terminal command execution from 30 to 3 seconds

Replace python execution tool with terminal

Remove add_two_numbers tool

Allow limited imports in execute_python

Add database support and persist chat history

Add initial implementation of chat application with required dependencies