Fixture skill package for Kelos end-to-end tests.
The kelos-e2e skill instructs the agent to print a predefined marker
string. The marker exists only in this repository, so when it appears in a
Kelos task's logs it proves the skills.sh installation chain worked:
the package was installed by the skills-install init container, exposed
to the agent through the plugin volume, and the agent discovered and used
the skill.
Used by test/e2e/skills_test.go in https://github.com/kelos-dev/kelos.
Do not change the skill name or the marker string without updating the
e2e tests that assert on them.