Add CLI Arguments --skills-dir and --skills

[ezhomelabs]

What variant of Codex are you using?

cli

What feature would you like to see?

Add two new CLI Arguments

Argument	Default	Description
--skills-dir	<project>/.agent	Directory scanned for SKILL.md files.
--skills	all	Comma-separated list of skills to load, or none to skip skills entirely.

So we can load agent skills dynamically

Additional information

No response