madb-onboarding

First-run experience for a freshly installed MADB. Trigger this skill when a user has just installed/registered the madb MCP server and has little or no memory yet, when they ask "what do you remember about me?", "show me what MADB/this can do", "is MADB working?", "what's in my memory?", or any first-session "how do I start" question about MADB. Its job is to compress time-to-aha: get the user to a real recall +…