haoel/leetcode ? reverse-engineered prompt

Build me a simple GitHub repository for my LeetCode solutions. I want it to feel like a clean personal archive where someone can browse problems, click the LeetCode question, and open my solution file.

Make the main focus C++ algorithm solutions, with separate areas for database style problems and shell problems too. The README should be the front page, with a big table showing the problem number, problem title, link to LeetCode, solution link, and difficulty. If a problem needs paid access, mark it clearly with a lock note.

Organize the solution files in a way that is easy to understand and easy to add to later. Each solution should be written so I can copy it into LeetCode without extra setup. Add a small script or simple workflow if useful to help keep the README index updated as more solutions are added.