build(web): align release Node version and npm install strategy

Set release workflow to Node.js 20 and switch make build-web back to
npm ci for reproducible dependency installs.

Refresh package-lock.json metadata to match the updated install path
 and keep cross-platform optional package entries consistent.

Author: beyond5959

.github/workflows/release.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: "22"
+          node-version: "20"
 
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v6

Makefile

@@ -4,7 +4,7 @@ test:
 	go test ./...
 
 build-web:
-	cd internal/webui/web && rm -rf node_modules && npm install && npm run build
+	cd internal/webui/web && npm ci && npm run build
 
 build: build-web
 	go build -o bin/ngent ./cmd/ngent