If npm install fails with permissions issue, display information on how to correct the problem

Usually this is because the command is missing `--unsafe-perm true` or needs `sudo`. Should tell the customer how to correct this instead of displaying permission denied error.

The issue names no file, test, or entry point. Start by locating the CLI handling for npm install failures and permission-denied output, then verify how the suggested npm and sudo remedies should be presented. Done means affected permission failures provide corrective guidance instead of only the error.

Written by the indexing model from the issue text.