Update Node.js setup and cache restoration steps

Author: aparnajyothi-y

.github/workflows/test-cache-restore.yml

@@ -13,25 +13,31 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
+      # Setup Node.js only (no cache here – handled manually)
       - name: Setup Node.js
         id: setup-node
         uses: actions/setup-node@v6
         with:
           node-version: '21'
-         
+
+      # Ensure pnpm is available if pnpm-lock.yaml exists
+      - name: Setup pnpm
+        if: hashFiles('**/pnpm-lock.yaml') != ''
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10
 
       # Normalize runner.arch (x64 / arm64)
       - name: Normalize runner architecture
         shell: bash
         run: |
           echo "ARCH=$(echo '${{ runner.arch }}' | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
 
-      # Detect package manager + cache path (Node equivalent of `go env`)
+      # Detect package manager + cache path
       - name: Detect package manager and cache path
         shell: bash
         run: |
           set -e
-
           if [ -f pnpm-lock.yaml ]; then
             PM=pnpm
             CACHE_PATH=$(pnpm store path)
@@ -45,7 +51,6 @@ jobs:
             CACHE_PATH=$(npm config get cache)
             LOCK_PATTERN="**/package-lock.json"
           fi
-
           echo "PACKAGE_MANAGER=$PM" >> $GITHUB_ENV
           echo "NODE_CACHE=$CACHE_PATH" >> $GITHUB_ENV
           echo "LOCK_PATTERN=$LOCK_PATTERN" >> $GITHUB_ENV
@@ -58,7 +63,7 @@ jobs:
           echo "NODE_CACHE=$NODE_CACHE"
           echo "LOCK_PATTERN=$LOCK_PATTERN"
 
-      # Restore Node cache (setup-go equivalent)
+      # Restore Node cache
       - name: Restore Node cache
         id: node-cache
         uses: actions/cache/restore@v5