Trick for clean env diff

[zph]

#!/bin/bash

ENV_BEFORE=$(export -p | sort)

Run your setup commands that modify the environment

source ~/.nvm/nvm.sh
nvm use 20

if [ -n "$CLAUDE_ENV_FILE" ]; then
ENV_AFTER=$(export -p | sort)
comm -13 <(echo "$ENV_BEFORE") <(echo "$ENV_AFTER") >> "$CLAUDE_ENV_FILE"
fi

exit 0