Add `boss detail` command to fetch full job posting details using
securityId from search results.
Fields returned: job description, skills, welfare, boss info (name,
title, active time), company info (industry, scale, stage), address.
Tested with real API calls against multiple job postings.
Usage:
opencli boss detail --security_id <id_from_search>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>