Skill dependency graph

Found very useful have a dependency graph for the skills so i know that if i want to use a specific skill it also need (or reference) other skills to work at its best.

For example /retro needs "writing-for-agents" at its first step, so i have to check and read also writing-for-agents and then maybe this skill can call also another one.

For example wayfinder mention /setup-matt-pocock-skills, and also mention to invoke grilling and domain-modeling; domain modelling use a complete and well defined file structure with ADR, CONTEXT.md and so on.

A graph can be very useful for understanding for each skill what others skill i need to check or adapt to my own harness and way of work.

I would be very nice to have this graph on the main page of the repo for example