Remove zoom-out skill and all references

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

README.md

@@ -132,7 +132,6 @@ For debugging, I've also built a **[`/diagnosing-bugs`](./skills/engineering/dia
 This is built in to every layer of these skills:
 
 - [`/to-prd`](./skills/engineering/to-prd/SKILL.md) quizzes you about which modules you're touching before creating a PRD
-- [`/zoom-out`](./skills/engineering/zoom-out/SKILL.md) tells the agent to explain code in the context of the whole system
 
 And crucially, [`/improve-codebase-architecture`](./skills/engineering/improve-codebase-architecture/SKILL.md) helps you rescue a codebase that has become a ball of mud. I recommend running it on your codebase once every few days.
 
@@ -156,7 +155,6 @@ Skills I use daily for code work.
 - **[setup-matt-pocock-skills](./skills/engineering/setup-matt-pocock-skills/SKILL.md)** — Configure this repo for the engineering skills (issue tracker, triage labels, domain doc layout). Run once per repo before using the other engineering skills.
 - **[to-issues](./skills/engineering/to-issues/SKILL.md)** — Break any plan, spec, or PRD into independently-grabbable issues using vertical slices.
 - **[to-prd](./skills/engineering/to-prd/SKILL.md)** — Turn the current conversation into a PRD and publish it to the issue tracker. No interview — just synthesizes what you've already discussed.
-- **[zoom-out](./skills/engineering/zoom-out/SKILL.md)** — Ask the agent to zoom out a level and map the relevant modules and callers on an unfamiliar section of code.
 - **[prototype](./skills/engineering/prototype/SKILL.md)** — Build a throwaway prototype to flesh out a design — either a runnable terminal app for state/business-logic questions, or several radically different UI variations toggleable from one route.
 
 **Model-invoked**