feat: add hooks and rules

.claude/rules/frontend.md

@@ -0,0 +1,17 @@
+---
+paths:
+  - "**/*.tsx"
+  - "**/*.jsx"
+  - "src/components/**"
+  - "src/app/**"
+---
+
+# Frontend Rules
+
+- One component per file, named with PascalCase
+- Use Server Components by default in Next.js — add `'use client'` only when needed
+- Tailwind utility classes for styling — avoid inline styles
+- All interactive elements must be keyboard accessible
+- Include `aria-label` on icon-only buttons
+- Use semantic HTML (`<nav>`, `<main>`, `<section>`) over generic `<div>`
+- Images require `alt` text