This is a submission for the Gemma 4 Challenge: Build with Gemma 4
What I Built
In this age of Agentic coding, most developers spend more than half their time reading code rather than writing it. For legacy systems, that number is even worse. When you inherit a 100,000-line monolith, clone an unfamiliar open-source project, or receive a repository full of AI-generated code from an agent that has long since stopped caring about your team's conventions, the question is always the same: where do I even start?
CodeArchy answers that question in seconds.
It parses your project using a battle-tested AST engine (Tree-sitter), builds a complete typed dependency graph, and feeds that structured graph to Gemma 4. The model doesn't describe your files — it thinks like a senior architect, grouping low-level modules into named, purposeful subsystems such as "Auth Layer", "Data Access", or "API Gateway", then draws the data flows between them. The result is the whiteboard diagram a principal engineer would sketch on day one, generated in under a minute, entirely offline.
