[TASK] Update CrewAI Memory Implementation

[lakindu-yl]

Task Description

Update the CrewAI memory implementation to align with the latest version, replacing usage of the removed ExternalMemory class with the new memory architecture.

Objectives

• Ensure compatibility with the latest CrewAI version
• Replace ExternalMemory with supported memory classes or patterns
• Preserve existing memory behavior (context retention, retrieval, etc.)

Scope

Included:

• Identifying all usages of ExternalMemory
• Refactoring to new memory classes or mechanisms provided by CrewAI
• Updating configurations and integrations related to memory
• Testing memory persistence and retrieval behavior

Out of Scope:

• Redesigning the entire agent memory strategy
• Adding new memory features beyond current functionality

Acceptance Criteria

• All references to ExternalMemory are refactored to use new Classes or methods
• Codebase uses updated CrewAI memory classes/APIs
• Memory functionality (context storage and retrieval) works as expected
• No import or runtime errors related to memory classes
• Relevant tests pass successfully