chore(repo): add CI, pre-commit hooks, and lint cleanup (#3)

* chore(repo): add CI workflow and pre-commit hooks

- GitHub Actions CI: lint, type check, registry build, full build on PRs
- Husky pre-commit: lint staged files + type check
- Add husky and lint-staged dev dependencies

* chore(lint): fix eslint config and clean up lint errors

- Migrate lint script from deprecated next lint to eslint CLI
- Ignore .next/ and next-env.d.ts generated files
- Remove unused CopyButton in json-viewer
- Remove unused isCrypto in tip-jar tabs variant

* fix(ci): specify packageManager for pnpm/action-setup

---------

Co-authored-by: Justin Levine <20596508+justinlevinedotme@users.noreply.github.com>

Author: jal-co

.github/workflows/ci.yml

@@ -0,0 +1,39 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  quality:
+    name: Quality
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: pnpm
+
+      - run: pnpm install --frozen-lockfile
+
+      - name: Lint
+        run: pnpm lint
+
+      - name: Type check
+        run: pnpm exec tsc --noEmit
+
+      - name: Registry build
+        run: pnpm registry:build
+
+      - name: Build
+        run: pnpm build

.husky/pre-commit

@@ -0,0 +1 @@
+pnpm exec lint-staged && pnpm exec tsc --noEmit

eslint.config.mjs

@@ -10,6 +10,7 @@ const compat = new FlatCompat({
 });
 
 const eslintConfig = [
+  { ignores: [".next/", "next-env.d.ts"] },
   ...compat.extends("next/core-web-vitals", "next/typescript"),
 ];
 

package.json

@@ -2,13 +2,15 @@
   "name": "jalco-ui",
   "version": "0.1.0",
   "private": true,
+  "packageManager": "pnpm@10.30.3",
   "scripts": {
     "dev": "tsx scripts/generate-preview-imports.ts && next dev",
     "build": "shadcn build && tsx scripts/generate-preview-imports.ts && next build",
     "start": "next start",
-    "lint": "next lint",
+    "lint": "eslint .",
     "registry:build": "shadcn build",
-    "previews:generate": "tsx scripts/generate-preview-imports.ts"
+    "previews:generate": "tsx scripts/generate-preview-imports.ts",
+    "prepare": "husky"
   },
   "dependencies": {
     "@radix-ui/react-label": "^2.1.7",
@@ -39,10 +41,15 @@
     "eslint": "^9.32.0",
     "eslint-config-next": "15.3.1",
     "html-to-image": "^1.11.13",
+    "husky": "^9.1.7",
+    "lint-staged": "^16.3.3",
     "tailwindcss": "^4.1.11",
     "tsx": "^4.21.0",
     "typescript": "^5.9.2"
   },
+  "lint-staged": {
+    "*.{ts,tsx}": "eslint --max-warnings 0"
+  },
   "pnpm": {
     "overrides": {
       "@types/react": "19.1.2",