Add pstack plugin

lauren tan's working style as a Cursor plugin. Bundles the poteto-mode routing skill plus the workflow skills it routes through (how, why, architect, arena, unslop, interrogate, automate-me, reflect, tdd) and the full seventeen-skill set of first principles. Ships the poteto-agent subagent that runs the same workflow end-to-end. The why skill discovers available MCPs at run time and maps each to an evidence category (source control, issue tracker, long-form docs, real-time chat, infra observability, error tracking, analytics warehouse). No third-party service integrations required. cursor-team-kit's control-cli, control-ui, and deslop are referenced as sibling-plugin dependencies for surfaces and commit cleanup; the kit works standalone otherwise. Marketplace entry registered at the root .cursor-plugin/marketplace.json.

LAlauren committed 5 months ago