Future you is a stranger.
In six months you won't remember how it works. Neither will the colleague covering your leave. A short README fixes both.
# Leave form
What it does and who it's for
## Run it locally
npm install, then npm run dev
## Settings needed
Names of env variables, never values
## Deploy
How and where it goes live
## Owner
Who to call, and their backupKeeping it true
Ask the agent to draft it from the code.
Read it and fix what's wrong.
Update it in the same commit as the change.
Test it: can a colleague run it from the README alone?
If it's not written down, it leaves with you.