Migrate build system from Vite to tsdown

.github/workflows/test.yml

@@ -41,14 +41,14 @@ jobs:
         with:
           node-version: 22
       - run: npm ci --ignore-scripts --no-audit --no-fund
-      - run: npx c8 --reporter=lcov npm test
+      - run: npm test
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
 
-  lint-package:
-    name: Lint package
+  build:
+    name: Build
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
@@ -59,7 +59,6 @@ jobs:
       - run: npm run build
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
-      - run: npm run lint-package
 
   knip:
     name: Lint unused code

knip.config.ts

@@ -1,9 +1,8 @@
 import type { KnipConfig } from 'knip'
 
 const config: KnipConfig = {
-	entry: ['src/index.ts'],
 	project: ['src/**/*.ts'],
-	ignoreDependencies: ['prettier'],
+	ignoreDependencies: ['prettier', '@vitest/coverage-v8'],
 }
 
 export default config