feat: Complete multi-blog setup with 12 collections and subdomain routing

- Added 12 blog collections: art, bfs, dfs, problems, puzzles, reviews, reflections, vibes, workflows, magic, contests, poetry
- Created content config with glob loaders for all collections
- Added sample posts for each collection
- Fixed TypeScript collection recognition by removing duplicate config
- Made BlogPosts component collection-aware for proper routing
- Created individual post pages ([...slug].astro) for each collection
- Added Netlify subdomain routing configuration
- Updated all references to use neeldhara.blog as main domain
- Fixed navigation links in all-blogs component

Ready for GitHub/Netlify deployment with subdomain support.

scripts/build-for-subdomains.js

@@ -0,0 +1,29 @@
+#!/usr/bin/env node
+
+/**
+ * Build script for subdomain deployment
+ * This ensures all collections are properly built and accessible via subdomain routing
+ */
+
+import { execSync } from 'child_process';
+import { writeFileSync } from 'fs';
+
+console.log('🏗️  Building multi-blog site for subdomain deployment...');
+
+// Build the Astro site
+try {
+  console.log('📦 Building Astro site...');
+  execSync('npm run build', { stdio: 'inherit' });
+  
+  console.log('✅ Build completed successfully!');
+  console.log('🌐 Ready for subdomain deployment to Netlify');
+  console.log('');
+  console.log('Next steps:');
+  console.log('1. Deploy to Netlify');
+  console.log('2. Configure custom domains for subdomains');
+  console.log('3. Test subdomain routing');
+  
+} catch (error) {
+  console.error('❌ Build failed:', error.message);
+  process.exit(1);
+}