Problem

The current docs and spec don't clarify whether a skill can reference and invoke other skills by name. For example, can a skill's prompt tell the agent to "run the /foo skill" as part of its workflow?

It's unclear if:

• A skill can instruct the agent to execute another skill by name (e.g., "now run the code-review skill")
• There are any conventions for skill-to-skill delegation or chaining
• The agent is expected to resolve skill references within a skill's prompt and invoke them via the Skill tool

Related: #95

Solution

Add a section to the docs that explicitly addresses:

1. Whether skills can reference other skills by name and instruct the agent to invoke them
2. If supported, the recommended syntax or convention for cross-skill references
3. Any limitations or caveats (e.g., circular references, execution order, context sharing between chained skills)