chore: tweak instructions

.github/copilot-instructions.md

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+# Memos Project - AI Assistant Instructions
+
+## Frontend Refactoring Goal
+
+**PRIORITY**: Replace all MUI Joy UI (@mui/joy) and @usememos/mui components with shadcn/ui + Tailwind CSS v4
+
+## Key Rules
+
+1. **Replace all MUI components** with shadcn/ui + Tailwind v4
+2. **Never modify generated shadcn/ui files** from `pnpm dlx shadcn@latest add`
+3. **Use https://tweakcn.com/ for custom variants** when standard components need customization
+
+## Setup Commands
+
+```bash
+# Initialize shadcn/ui
+pnpm dlx shadcn@latest init
+
+# Add components
+pnpm dlx shadcn@latest add [component]
+```
+
+## Migration Pattern
+
+```typescript
+// OLD
+import { Button, Card, Input } from "@mui/joy";
+
+// NEW
+import { Button } from "@/components/ui/button";
+import { Card } from "@/components/ui/card";
+import { Input } from "@/components/ui/input";
+```
+
+## When Suggesting Changes
+
+- Include `pnpm dlx shadcn@latest add [component]` commands
+- Use Tailwind classes for styling
+- Mention https://tweakcn.com/ for custom variants
+- Preserve TypeScript types and accessibility
+
+## Target Files
+
+Files containing `@mui/joy` or `@usememos/mui` imports

.github/prompts/claude.prompt.md

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----
-mode: agent
----
-
-Please follow `./CLAUDE.md` for the basic structure and development guidelines of the Memos project.