Agent Skills: quality-engineering-jira-integration

Jira ↔ Zephyr traceability: fetch story AC and components, detect existing TC links, link new Zephyr TCs back to Jira, and apply has-zephyr-tests labels. Use after creating Zephyr test cases that need linking, when fetching a Jira story's details for test generation, or when auditing and cleaning up stale TC links. (triggers: jira issue, zephyr link, has-zephyr-tests, traceability, link test case, EZRX-)