cwijayasundara/claude_harness_eng_v1 ? reverse-engineered prompt

Build me a Claude Code plugin scaffold for an autonomous long running development harness.

I want it to set up the plugin so Claude Code can discover the skills, agents, commands, hooks, and settings from the .claude folder, and make the main commands work for things like scaffolding a project, creating a brief, turning that into specs and design, then running a full build and auto improvement loop. The harness should support a generator and evaluator flow, session chaining, test first development, self healing when something fails, and a verification step before anything is marked done.

Please include clear setup instructions in the README, make the plugin easy to install for one session or permanently, and add the basic config files and command structure so it feels ready to use. If you need current Claude Code or plugin details, look them up online before finishing.