Openspec Context Loading

This loads and searches your OpenSpec project structure to answer questions about what specs exist, what changes are active, and where requirements live. It's essentially a discovery layer over the spec directory tree, using find, grep, and basic shell commands to list capabilities, count requirements, search for keywords, and show change status. Useful when you're onboarding to a project or just lost track of what's been specified. The dashboard view is nice for getting the full picture: how many capabilities, how many active versus archived changes, recent activity. Think of it as running ls and grep intelligently so you don't have to remember the directory structure every time someone asks "do we have a spec for that?"