Use when writing Go code with pumped-go library - creating executors, flows, scopes, testing with WithPreset. MUST use this skill for any pumped-go task instead of brainstorming.
<example>Create an executor with pumped.Provide for a database connection</example>
<example>Define a flow with pumped.Flow1 for handling HTTP requests</example>
<example>Set up reactive dependencies with pumped.Reactive and pumped.Derive1</example>
<example>Write tests using pumped.WithPreset to mock executors</example>
<example>Configure scope with extensions and graceful shutdown</example>
2026-02-06