Refactor PK page and add Trellis setup

.trellis/spec/frontend/component-guidelines.md

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+# Component Guidelines
+
+> How components are built in this project.
+
+---
+
+## Overview
+
+<!--
+Document your project's component conventions here.
+
+Questions to answer:
+- What component patterns do you use?
+- How are props defined?
+- How do you handle composition?
+- What accessibility standards apply?
+-->
+
+(To be filled by the team)
+
+---
+
+## Component Structure
+
+<!-- Standard structure of a component file -->
+
+(To be filled by the team)
+
+---
+
+## Props Conventions
+
+<!-- How props should be defined and typed -->
+
+(To be filled by the team)
+
+---
+
+## Styling Patterns
+
+<!-- How styles are applied (CSS modules, styled-components, Tailwind, etc.) -->
+
+(To be filled by the team)
+
+---
+
+## Accessibility
+
+<!-- A11y requirements and patterns -->
+
+(To be filled by the team)
+
+---
+
+## Common Mistakes
+
+<!-- Component-related mistakes your team has made -->
+
+(To be filled by the team)