uv tool install should be recommended instead of uvx

[ngaurav]

Problem or motivation

uvx re-installs authsome everytime. As authsome is growing, it is no longer fast.

also installing authsome will make the agent workload easy, reducing hallucinations.

authsome run curl is easy than uvx authsome@latest run curl

Proposed solution

uv tool install should be recommended method in README as well as in skills.

And agents can use the proxy injection via

authsome run <bash command>

Alternatives considered

No response

Area

Documentation

Additional context

No response