refactor: consolidate codebase into clean architecture

- Remove duplicate features structure from basura_app
- Migrate recycling_guide feature to lib/
- Update main.dart to use new architecture
- Clean up old views structure
- Remove temporary directories (basura_app, basura_backend, wiki_hackathon)

lib/features/recycling_guide/presentation/widgets/search_result_tile.dart

@@ -0,0 +1,60 @@
+// lib/features/recycling_guide/presentation/widgets/search_result_tile.dart
+
+import 'package:flutter/material.dart';
+import '../../data/repositories/recycling_repository.dart';
+
+class SearchResultTile extends StatelessWidget {
+  final SearchResult resultado;
+
+  const SearchResultTile({super.key, required this.resultado});
+
+  @override
+  Widget build(BuildContext context) {
+    final color = _parseColor(resultado.categoria.colorHex);
+    final acepta = resultado.item.acepta;
+
+    return ListTile(
+      leading: Container(
+        width: 40,
+        height: 40,
+        decoration: BoxDecoration(
+          color: color.withOpacity(0.15),
+          borderRadius: BorderRadius.circular(8),
+        ),
+        child: Icon(
+          acepta ? Icons.check_circle : Icons.cancel,
+          color: acepta ? Colors.green : Colors.red,
+          size: 22,
+        ),
+      ),
+      title: Text(
+        resultado.item.nombre,
+        style: const TextStyle(fontWeight: FontWeight.w500, fontSize: 14),
+      ),
+      subtitle: Text(
+        resultado.item.ejemplos,
+        style: TextStyle(fontSize: 12, color: Colors.grey[600]),
+      ),
+      trailing: Container(
+        padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+        decoration: BoxDecoration(
+          color: color.withOpacity(0.1),
+          borderRadius: BorderRadius.circular(12),
+        ),
+        child: Text(
+          resultado.categoria.nombre,
+          style: TextStyle(
+            fontSize: 11,
+            color: color,
+            fontWeight: FontWeight.w600,
+          ),
+        ),
+      ),
+    );
+  }
+
+  Color _parseColor(String hex) {
+    final h = hex.replaceFirst('#', '');
+    return Color(int.parse('FF$h', radix: 16));
+  }
+}