feat: add AI recommendations flow for tenders

Implement company AI onboarding/recommendation models, services, repository, and tender UI integration with supporting tests.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/data/services/model/recommendation_item/recommendation_item.g.dart

@@ -0,0 +1,21 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'recommendation_item.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_RecommendationItem _$RecommendationItemFromJson(Map<String, dynamic> json) =>
+    _RecommendationItem(
+      rank: json['rank'] as String?,
+      tenderId: json['tender_id'] as String?,
+      analysis: json['analysis'] as String?,
+    );
+
+Map<String, dynamic> _$RecommendationItemToJson(_RecommendationItem instance) =>
+    <String, dynamic>{
+      'rank': instance.rank,
+      'tender_id': instance.tenderId,
+      'analysis': instance.analysis,
+    };