Agent Skills: paperclip-plugin-dev

Build, publish, and install Paperclip plugins correctly. This skill should be used when scaffolding a new Paperclip plugin, writing a plugin manifest, implementing plugin worker logic, adding UI slots, publishing to npm, or installing a plugin into a Paperclip instance. Contains critical lessons from real publishing failures. Also invoke when working on plugin capabilities, jobs, webhooks, agent tools, or the plugin SDK.