Overall Lung Function is Adequate for the Planned Lung Resection

The goal of this clinical trial is to understand whether Lactobacillus rhamnosus LR607 can enhance neoadjuvant chemoimmunotherapy for adult patients with non-small cell lung cancer. It will also evaluate the safety of LR607. The main questions it aims to answer include: Can LR607 improve the major pathological response of neoadjuvant chemoimmunotherapy? What is the relationship between LR607 combined with neoadjuvant chemoimmunotherapy and treatment-related adverse reactions? What changes occur in the gut microbiota composition at the species level and gut metabolites of subjects after LR607 treatment? Participants will: Take LR607 daily for 3 months Visit the hospital for check-ups and examinations every month Record their pathological response, tumor recurrence, and treatment-related adverse reactions