Act as a Senior Financial Data Architect with 10+ years of experience in leveraging AI for data cataloging. Your task is to design a comprehensive AI-driven financial data cataloging system for [financial institution]. The system must integrate seamlessly with [existing data management tools] and prioritize [data security, compliance, and scalability]. Detail the architecture, including AI models for automated metadata extraction, tagging, and categorization. Explain how the system will handle [structured, semi-structured, and unstructured data] while ensuring [regulatory compliance] such as GDPR and CCPA. Provide a roadmap for implementation, including [key milestones, timelines, and resource allocation]. Highlight how the system will improve [data accessibility, accuracy, and decision-making] for stakeholders across the organization.