Building NEXUS: How I Architected a Multi-Agent AI System on Google Cloud in 48 Hours

`One sentence. Four AI agents. Real results — in under 4 seconds. Here's everything I learned building NEXUS for the Gen AI Academy APAC Edition hackathon. The problem I wanted to solve How many apps do you open on a typical workday just to stay organized? Calendar. Task manager. Notes app. Each one lives in its own silo, and switching between them adds up to a surprising amount of mental overhead. I wanted to build something different — a single conversational interface where you s...