Only looked at the Cargo.toml files.

• (pet peeve) Considering there is (presumably) no compatibility concerns, why not use an efficient binary format instead of JSON?
• Not checking in Cargo.lock files, and using = dependency versions for Phoenix_Desktop, is a bit odd!

What’s wrong with it

• It’s a random crate no one uses.
• You’re not even really “using” it. You are just importing a re-export of reqwest, which is what I expected you to immediately notice after I brought it into attention. You can obviously just remove it and use reqwest directly.
• Still, trusting a re-export is not a trivial matter. The random author of the no-name crate could replace the original reqwest with something malicious, or bad in some other way, in a v0.1.1 release. That (theoretical) release will be picked up after a cargo update call, or when Cargo.lock is not checked, which is the case by default with libraries.

How did you find that crate?
Why do you think you need it?

Can you explain the rust-fetch dependency?

Why Peter Thiel though?

It was a (failed) joke about your user-name.

How much “vibe coding” is involved?

And are you Peter Thiel by any chance 😉