My last post was the tour — the tools, the categories, why everything runs in your browser. This one is the sticky stuff: the decisions that cost me the most time, so you can skip them. Stack in one sentence. Next.js 14 App Router, TypeScript, Tailwind. Every tool is a client component, there is no backend, and the whole site is pre-rendered at build time — 399 static pages today (160 tools in EN + TR, 24 guides per locale, categories, static pages). Bilingual without duplicating routes. O...