Generic resume section architecture improvements

Added(13)

• Unified multiple resume sections under a shared architecture
• Reduced duplicated component logic and rendering behavior
• Improved consistency across custom section workflows
• Improved template registry typing
• Enhanced type safety across rendering systems
• Refined shared section data structures
• Simplified resume section architecture
• Improved scalability for future section additions
• Reduced internal complexity and duplicated logic
• Unified rendering behavior across sections
• Improved editor workflow reliability and maintainability
• Additional editor and rendering refinements expected
• Focused on scalable resume section architecture and maintainability