feat(core-ui): scaffold empty package (contents migrated in Plan 3)

packages/core-ui/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "@repo/core-ui",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "exports": {
+    ".": "./src/index.ts"
+  },
+  "scripts": {
+    "build": "tsc --noEmit",
+    "lint": "eslint .",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "clsx": "^2.1.1",
+    "react": "^19.0.0",
+    "tailwind-merge": "^3.0.0"
+  },
+  "devDependencies": {
+    "@repo/eslint-config": "workspace:*",
+    "@repo/typescript-config": "workspace:*",
+    "@types/react": "^19.0.0"
+  }
+}

packages/core-ui/src/index.ts

@@ -0,0 +1 @@
+export {};

packages/core-ui/tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "extends": "@repo/typescript-config/base.json",
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": "src",
+    "lib": ["ES2022", "DOM"],
+    "jsx": "preserve"
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}

packages/core-ui/turbo.json

@@ -0,0 +1,4 @@
+{
+  "extends": ["//"],
+  "tags": ["core"]
+}