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how

Explain how a part of the codebase works, from trigger to result, at the depth an experienced engineer needs to start changing it. Use for "how does X work", "walk me through Y", "where should this code go", "which layer owns Z".

plugins/requie/endostack/skills/how/SKILL.md

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# how

Explain how some part of the codebase works so that an experienced engineer new to the area can build a working mental model and start making changes. Aim for the flow, the actors and the decision points. Line-by-line narration is out of scope.

Run this skill when the user asks for it (`/how` or an explicit request). The [teach](../teach/SKILL.md) skill calls it for the mechanics half of an explanation.

## Questions this skill answers

- How something works, or a walkthrough before an edit.
- Placement and ownership: where new code belongs, which package is responsible for something, whether code sits in the right layer.
- The architecture of a subsystem and its runtime execution flow.
- Building a newcomer's picture of an unfamiliar area.

Questions about motivation or history go to the [why](../why/SKILL.md) skill. Questions about what a change might break go to the [blast-radius](../blast-radius/SKILL.md) skill.