Add Knip check for unused files

.github/workflows/code-qa.yml

@@ -28,6 +28,21 @@ jobs:
       - name: Lint
         run: npm run lint
 
+  knip:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+          cache: 'npm'
+      - name: Install dependencies
+        run: npm run install:all
+      - name: Run knip checks
+        run: npm run knip
+
   unit-test:
     runs-on: ubuntu-latest
     steps:

knip.json

@@ -0,0 +1,27 @@
+{
+	"$schema": "https://unpkg.com/knip@latest/schema.json",
+	"entry": ["src/extension.ts", "src/activate/index.ts", "webview-ui/src/index.tsx"],
+	"project": ["src/**/*.ts", "webview-ui/src/**/*.{ts,tsx}"],
+	"ignore": [
+		"**/__mocks__/**",
+		"**/__tests__/**",
+		"**/test/**",
+		"**/*.test.ts",
+		"**/*.test.tsx",
+		"**/stories/**",
+		"coverage/**",
+		"dist/**",
+		"out/**",
+		"bin/**",
+		"src/activate/**",
+		"src/exports/**",
+		"src/extension.ts",
+		".vscode-test.mjs"
+	],
+	"workspaces": {
+		"webview-ui": {
+			"entry": ["src/index.tsx"],
+			"project": ["src/**/*.{ts,tsx}"]
+		}
+	}
+}