Missing uv in Madhavi setup

[palladius]

Lets ensure uv is in the READM as strong prerequisite.
Also in the initial day 0 the skill for GCP setup needs to also CHECK uv is install if not point ot astral uv for install

[github-actions]

🤖 Hi @palladius, I've received your request, and I'm working on it now! You can track my progress in the logs for more details.

[palladius]

also fel free to add /sre-extension:blah