Tests / Test passed: 819
Adds cloud/skills.py (domain + service), SQLAlchemy models and Alembic migration 0010_skill_management (cloud_skills, cloud_skill_entitlements, cloud_skill_sync_state, a per-host changelog, and host_skill_inventory), and repository methods with a monotonic per-host entitlement_version that drives correct incremental fetch_host_delta. cloud-api suite green (41 passed); HEAD_REVISION bumped to 0010. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>