v4.0.1 — context-hub description prefix

Marketplace bumped to 4.0.1 (patch). Every skill description across all five plugins now begins with a (context-hub:<skill>) brand prefix for at-a-glance provenance in skill listings (e.g. (context-hub:imagegen), (context-hub:converge)). Descriptions are otherwise unchanged, the quality-bar lint still passes, and there are no behavior changes.

Plugin patch bumps

• codex 3.1.1 → 3.1.2
• agy 3.0.0 → 3.0.1
• contexthub 3.0.0 → 3.0.1
• forge 1.0.0 → 1.0.1
• triage 1.0.0 → 1.0.1

See CHANGELOG.md for full history.