Sanitize agent roles to ensure valid directory names (Windows)

[JH427]

This pull request addresses an issue with path construction in the RAGStorage class, specifically how agent roles are concatenated and used to create the directory path.

Issue:

When agent roles contain spaces or newline characters, it results in an invalid directory name, leading to the following error: OSError: [WinError 123] The filename, directory name, or volume label syntax is incorrect: 'C:\\Users\\user\\AppData\\Local\\CrewAI\\my_crew_name/short_term/Agent A\n_Agent B\n_Agent C\n_Agent D\n'

Solution:

To resolve this, I've added a method to sanitize the agent roles, replacing newline characters, spaces, and slashes with underscores. This ensures that the constructed directory paths are valid.

Changes Made:

Added a_sanitize_role method to RAGStorage in src/crewai/memory/storage/rag_storage.py to replace invalid characters. Applied this sanitization method when creating the agents string for the directory path.

Example Code Changes:

def _sanitize_role(self, role: str) -> str:
    """
    Sanitizes agent roles to ensure valid directory names.
    """
    return role.replace('\n', '').replace(' ', '_').replace('/', '_')

agents = [self._sanitize_role(agent.role) for agent in agents]

This change ensures that all agent roles form valid directory names, preventing the WinError 123.

Testing:

I have tested this change locally and it resolved the path construction issue, allowing the CrewAI application to run without errors.