Define Semantic Kernel Skills and Agents

Outline a set of Semantic Kernel 'skills' (e.g., 'AppLauncherSkill', 'VolumeControlSkill', 'UserPreferenceSkill') that a smart TV agent would need. Define at least two agents ('Core Device Agent', 'Personal Assistant Agent') and how they would use these skills. Describe how MCP will secure access to underlying device APIs for these skills, and how A2A Protocol will enable communication between these agents.