refactor: standardize code formatting and linting configuration

- Replace .eslintrc.js with .eslintrc.cjs for better ES module compatibility
- Add .prettierrc configuration for consistent code formatting
- Update package.json with new lint and format scripts
- Add nodemon.json for development hot reloading configuration
- Standardize code formatting across all JavaScript and Vue files
- Update web admin SPA with improved linting rules and formatting
- Add prettier configuration to web admin SPA

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

web/admin-spa/src/config/apiStats.js

@@ -14,7 +14,7 @@ class ApiStatsClient {
       if (this.isDev && url.startsWith('/admin')) {
         url = '/webapi' + url
       }
-      
+
       const response = await fetch(`${this.baseURL}${url}`, {
         headers: {
           'Content-Type': 'application/json',
@@ -78,4 +78,4 @@ class ApiStatsClient {
   }
 }
 
-export const apiStatsClient = new ApiStatsClient()
+export const apiStatsClient = new ApiStatsClient()