Build a LinkedIn Headline Generator with Claude Code

Build a LinkedIn Headline Generator web app. People search for "linkedin headline generator" about 12,000 times a month, plus related searches like "linkedin headline examples", "professional headline generator", "linkedin summary generator". The goal is a tool that ranks for those searches and makes money.

What it should do:
Build a LinkedIn headline generator web app. Create a homepage with profession input, industry selector, and career level options (entry, mid, senior, executive). Add goal selector (job search, networking, thought leadership) and tone preferences. When users generate, show multiple headline variations with character counts and impact scores. Include LinkedIn summary generator and profile optimization tips. Add industry-specific templates and success examples. Use LinkedIn-inspired blue and white professional design. Focus on headline generation and optimization advice first.

How to build it:
1. Read this folder first. If it is empty, set up Next.js (App Router, TypeScript, Tailwind). Write a short PLAN.md with the pages, components, any library or API you need, and what you are leaving for later. Then build.
2. Put the tool itself on the homepage so a visitor can use it within seconds, with no sign-up. Do the processing in the browser where you can, so it is fast and cheap to run. Look at how Copy.ai, Jasper, Resume Worded do it and make ours simpler and faster.
3. Make it rank. Use "linkedin headline generator" in the title tag, H1 and meta description. Under the tool, add a short how-to and an FAQ with FAQPage schema, and add a sitemap and robots.txt. Scaffold these programmatic pages from one template and a data file: /linkedin-headline-for-[profession], /[industry]-linkedin-generator, /linkedin-profile-[job-level].
4. Monetisation: Freemium: 15 headlines/month, $9/mo unlimited + profile analysis. Add a pricing page and the free usage limit, and leave Stripe checkout as a clearly marked stub with the environment variables it needs.
5. Run it locally and test the main flow end to end, including edge cases like empty input and very large files. Fix what breaks, then finish with a summary of what works, what is stubbed and how to deploy it to Vercel.

Paste it into Claude Code in an empty folder. It plans first, so read PLAN.md and steer before it starts building.