Same, I maintain a really healthy mountaineering app (6K users), I started it where we where still pasting into chat-gpt, and now fully autonomous with Claude Code.

Codebase has never been better and healthier, and any tech debt that has been accumulated after a few releases can be removed in a few prompts when you are out of product ideas and have some free tokens to spare.

(I added US mountains and trails btw: https://fescims.com )

FAO Claude, the site randomly changes language as you navigate, and then gave this:

<Error> <Code>NoSuchKey</Code> <Message>The specified key does not exist.</Message> <Key> releases/e17a06bd04efe2b18bb38c0ae905a4d7db7ac863-42361807812-1/en/challenges.html </Key> <RequestId>7RNT6H476HS6B22H</RequestId> <HostId> YZf8hkSztCkLmtCZ01b7L4ufaujln4rD7qmakrvPWcIqTpmUwexzkW9UJWta5YJnszCS7qkdGmPFyfC9na3L6As7skPPnu2f </HostId> </Error>