Let's talk about the "full-stack boundary." If you're building a modern web app with a Python backend (FastAPI) and a TypeScript frontend (Next.js/React), you know the pain: keeping your types in sync. You add a new field to a Pydantic model, you deploy, and ten minutes later your frontend crashes because the Zod validation schema wasn't updated. It's a manual, error-prone process. The Problem with "Online Converters" The usual move is to Google "Pydantic to Zod," click a link, and paste your code. This is a security risk. Your Pydantic models map to your database. Pasting them into a random, ad-filled server is a massive privacy gamble. I decided to build a 100% offline alternative. Enter SyntaxSnap: 100% Offline Pydantic-to-Zod 🔒 I built SyntaxSnap to be a client-side suite of dev tools. The Pydantic-to-Zod converter runs entirely in your browser. No API calls. No tracking. You can turn off your Wi-Fi and it still works perfectly.…