Address additional review feedback for pnpm migration

• Fix node-version-file paths in GitHub workflow configurations
• Refactor .pnpmfile.cjs to use switch statement for better code organization
• Correct cache type typo in fix-format workflow
• Simplify Vite configuration by merging configs inline
• Update package description for consistency

.github/workflows/fix-format.yml

@@ -31,8 +31,8 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
-          node-version-file: './server/.nvmrc'
-          cache: 'npm'
+          node-version-file: './.github/.nvmrc'
+          cache: 'pnpm'
           cache-dependency-path: '**/pnpm-lock.yaml'
 
       - name: Fix formatting