I built a resume + portfolio builder with live preview and multiple templates ....looking for feedback

Show HN: An Interactive playground to practice Low-Level Design (LLD) interviews

Practice Low Level Design with interactive problems, UML class diagram builder, and AI-powered code review. Solve real LLD interview problems: Parking Lot, ATM, Elevator, JSON Parser, File System, Vending Machine, Chess, Music Streaming, and more in Python, Java, C++, TypeScript, JavaScript, C#. Step-by-step guided practice with solutions.

I made an app to help me visually remember exactly what I packed

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Exploring and Validating Challenges in Production Generative AI