Bump Vercel CLI pin to 59.16.0 for pnpm 12

Vercel 54 passes --unsafe-perm to pnpm, which pnpm 12 rejects.
Mirror the v1 fix from #1832 onto the three www deploy workflows on
dev so preview deploys succeed again.

Co-authored-by: Yam Borodetsky <hi@yam.codes>

Author: cursoragent

.github/workflows/deploy-www-manual.yml

@@ -68,7 +68,7 @@ jobs:
         run: pnpm install
       - name: Install Vercel CLI
         # Pin the CLI to avoid upstream breakage from newly published majors.
-        run: npm install --global vercel@54.7.1
+        run: npm install --global vercel@59.16.0
       - name: Pull Vercel Environment Information
         run: |
           if [ "$TARGET" = "arkenv.js.org" ]; then

.github/workflows/deploy-www.yml

@@ -42,7 +42,7 @@ jobs:
         run: pnpm install
       - name: Install Vercel CLI
         # Pin the CLI to avoid upstream breakage from newly published majors.
-        run: npm install --global vercel@54.7.1
+        run: npm install --global vercel@59.16.0
       - name: Pull Vercel Environment Information
         run: node scripts/vercel-wrapper.cjs pull --yes --environment=production --token=${{ secrets.VERCEL_TOKEN }}
       - name: Build Project Artifacts

.github/workflows/preview-www-reusable.yml

@@ -68,8 +68,9 @@ jobs:
             echo "is_affected=true" >> "$GITHUB_OUTPUT"
           fi
       - name: Install Vercel CLI
-        # Pin the CLI to avoid upstream breakage from newly published majors.
-        run: npm install --global vercel@54.7.1
+        # Vercel 54 invokes pnpm with --unsafe-perm, which pnpm 12 removed.
+        # Keep the CLI pinned while using a version that supports the workspace's pnpm.
+        run: npm install --global vercel@59.16.0
       - name: Pull Vercel Environment Information
         if: steps.affected.outputs.is_affected == 'true'
         env: