feat: add backend autocomplete for suppliers and users in inbound

Co-authored-by: aider (openai/DeepSeek-V3.2-Thinking) <aider@aider.chat>

inventory-backend/app/api/v1/inbound/service.py

@@ -138,3 +138,27 @@ def delete_service(service_id):
     except Exception as e:
         current_app.logger.error(f'删除服务权益失败: {str(e)}')
         return jsonify({'code': 500, 'msg': '内部服务器错误'}), 500
+
+
+# ------------------------------------------------------------------
+# 供应商建议
+# ------------------------------------------------------------------
+@inbound_bp.route('/service/suggestions/providers', methods=['GET'])
+@jwt_required()
+def get_provider_suggestions():
+    base_id = request.args.get('base_id', type=int)
+    if not base_id:
+        return jsonify({'code': 400, 'msg': 'base_id required'}), 400
+    data = ServiceService.get_history_providers(base_id)
+    return jsonify({'code': 200, 'msg': 'success', 'data': data})
+
+
+# ------------------------------------------------------------------
+# 系统用户建议
+# ------------------------------------------------------------------
+@inbound_bp.route('/service/suggestions/users', methods=['GET'])
+@jwt_required()
+def get_user_suggestions():
+    keyword = request.args.get('keyword', '')
+    data = ServiceService.search_system_users(keyword)
+    return jsonify({'code': 200, 'msg': 'success', 'data': data})