Security: Stores private host information in codebase. Suggest moving it to .env.local.

[StefanDeWolfe]

Host address should be removed to .env.local for security. Just a nitpick, but it is good to practice correctly.
Something like
${process.env.HOST}
should be used in the string fields of the .tsx files and
HOST=http://xxx.xxx.xxx.xxx:8090
in the .env.local file.