Sync changes - automated commit

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Revamp index.html with enhanced styling and new features. Added a personal brand section, improved card designs, and implemented smooth scrolling for navigation. Updated footer with project links and contact information. Enhanced loading indicators and mobile responsiveness for better user experience.

Enhance proposal documents with new AI integration features and improved styling. Added Mermaid diagrams for system architecture visualization, updated HTML structure for better responsiveness, and removed outdated files. This update aims to provide a clearer presentation of AI capabilities for the Hospital Universitario 12 de Octubre proposal.

Reorganized project structure and moved files from PROPUESTA_HOSPITALES_AI