Optimize linting: remove package-lock.json, use npm install for faster CI

Co-authored-by: hpk42 <73579+hpk42@users.noreply.github.com>

Author: Copilot

.github/workflows/lint.yml

@@ -23,10 +23,9 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: '20'
-          cache: 'npm'
 
       - name: Install dependencies
-        run: npm ci
+        run: npm install
 
       - name: Lint HTML files
         run: npm run lint:html

.gitignore

@@ -2,3 +2,4 @@ docs
 book
 *.swp
 node_modules
+package-lock.json