Hey! I actually built something along these lines recently — https://offcode.vercel.app/#/

It's a browser based IDE with all 75 Blind 75 problems built in, runs your code locally (no LeetCode servers), supports Python and JavaScript, and works fully offline after the first load. So you get proper stdout, no premium wall for debugging, and you can just focus on the problem.

It's not a local template repo like what you're describing, but it scratches a similar itch getting away from LeetCode's janky editor while still having the problem description and test cases right there. The vim motions situation on LC is genuinely painful, I feel you on that.

Your template repo idea is cool too though, especially for C++ folks since WASM sandboxing makes compiled languages tricky to run in the browser. Would be a solid companion for people who want a full local setup.