Refactor tests: use beforeEach to reduce duplication in test setup

Co-authored-by: argyleink <1134620+argyleink@users.noreply.github.com>

Author: Copilot

tests/unit/robots.test.ts

@@ -1,57 +1,42 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, beforeEach } from 'vitest';
 import { getRobotsTxt } from '../../src/pages/robots.txt';
 
 describe('Robots.txt', () => {
+  let mockSite: URL;
+  let mockSitemap: URL;
+  let robotsTxt: string;
+
+  beforeEach(() => {
+    mockSite = new URL('https://whiskey.fm');
+    mockSitemap = new URL('sitemap-index.xml', mockSite);
+    robotsTxt = getRobotsTxt(mockSitemap, mockSite);
+  });
+
   describe('Generated content', () => {
     it('should contain welcoming comment for AI agents', () => {
-      const mockSite = new URL('https://whiskey.fm');
-      const mockSitemap = new URL('sitemap-index.xml', mockSite);
-      
-      const robotsTxt = getRobotsTxt(mockSitemap, mockSite);
-
       expect(robotsTxt).toContain('Welcome AI agents and crawlers');
       expect(robotsTxt).toContain('User-agent: *');
       expect(robotsTxt).toContain('Allow: /');
     });
 
     it('should include sitemap reference', () => {
-      const mockSite = new URL('https://whiskey.fm');
-      const mockSitemap = new URL('sitemap-index.xml', mockSite);
-      
-      const robotsTxt = getRobotsTxt(mockSitemap, mockSite);
-      
       expect(robotsTxt).toContain('Sitemap: https://whiskey.fm/sitemap-index.xml');
     });
 
     it('should reference LLM-specific resources', () => {
-      const mockSite = new URL('https://whiskey.fm');
-      const mockSitemap = new URL('sitemap-index.xml', mockSite);
-      
-      const robotsTxt = getRobotsTxt(mockSitemap, mockSite);
-
       expect(robotsTxt).toContain('/llms.txt');
       expect(robotsTxt).toContain('/for-llms');
       expect(robotsTxt).toContain('/episodes-index.html.md');
     });
 
     it('should describe available content types', () => {
-      const mockSite = new URL('https://whiskey.fm');
-      const mockSitemap = new URL('sitemap-index.xml', mockSite);
-      
-      const robotsTxt = getRobotsTxt(mockSitemap, mockSite);
-
       expect(robotsTxt).toContain('Podcast metadata');
       expect(robotsTxt).toContain('Episode information');
       expect(robotsTxt).toContain('Full transcripts');
       expect(robotsTxt).toContain('Guest information');
     });
 
     it('should include encouraging closing message', () => {
-      const mockSite = new URL('https://whiskey.fm');
-      const mockSitemap = new URL('sitemap-index.xml', mockSite);
-      
-      const robotsTxt = getRobotsTxt(mockSitemap, mockSite);
-
       expect(robotsTxt).toContain('Feel free to crawl, index, and use this content');
       expect(robotsTxt).toContain('help users discover');
     });