refactor: migrate to eslint flat config and format codebase with prettier

- Remove legacy .eslintrc.cjs and .eslintignore
- Add eslint.config.js with flat config, security rules (no-eval, no-implied-eval, no-new-func, no-script-url)
- Add .prettierrc and .prettierignore
- Format entire codebase with prettier

src/components/admin/utils.ts

@@ -1,22 +1,24 @@
 // Format setting key from Snake_Case / CamelCase to readable text
 export function formatSettingKey(name: string): string {
-  if (!name) return ''
+  if (!name) return '';
 
-  return name
-    // CamelCase -> spaces
-    .replace(/([a-z])([A-Z])/g, '$1 $2')
-    // snake_case -> spaces
-    .replace(/_/g, ' ')
-    // Remove extra spaces
-    .replace(/\s+/g, ' ')
-    .trim()
-    // Capitalize first letter
-    .replace(/^./, c => c.toUpperCase())
+  return (
+    name
+      // CamelCase -> spaces
+      .replace(/([a-z])([A-Z])/g, '$1 $2')
+      // snake_case -> spaces
+      .replace(/_/g, ' ')
+      // Remove extra spaces
+      .replace(/\s+/g, ' ')
+      .trim()
+      // Capitalize first letter
+      .replace(/^./, (c) => c.toUpperCase())
+  );
 }
 
 // Strip HTML tags and template descriptions from setting descriptions
 export function stripHtml(html: string): string {
-  if (!html) return ''
+  if (!html) return '';
   const cleaned = html
     .replace(/<[^>]*>/g, '')
     .replace(/&nbsp;/g, ' ')
@@ -24,12 +26,12 @@ export function stripHtml(html: string): string {
     .replace(/&lt;/g, '<')
     .replace(/&gt;/g, '>')
     .replace(/&quot;/g, '"')
-    .trim()
+    .trim();
 
   // Remove template descriptions like "Параметр X управляет категорией Y"
   if (cleaned.match(/^Параметр .+ управляет категорией/)) {
-    return ''
+    return '';
   }
 
-  return cleaned
+  return cleaned;
 }