I ship 15 web products solo — here's my AI-assisted workflow

I'm a solo developer running 15 web products in production. SaaS tools, programmatic SEO sites, an npm package, a brand kit generator. No team, no cofounder, no agency. Just me, a standardized stack, and Claude Code as a copilot embedded in every step of the pipeline. This is not a "look how smart I am" post. Half of these products make zero revenue. But the system that lets me ship them fast, maintain them, and kill the losers early — that part works. Here's how. The factory mindset I call my system "L'Usine" (French for "the factory"). It's a monorepo of markdown files, shell scripts, checklists, and prompt templates that wraps around Claude Code. The idea is simple: standardize everything so the AI can be useful. When every project uses the same stack (Next.js, TypeScript, Tailwind, Prisma, Stripe), the same file structure, and the same conventions, the LLM doesn't have to guess. It knows where the DB singleton lives. It knows "use client" goes on leaf components only. It knows sele