修正引用路径；恢复project_info.py到service目录，新增config/project_info.yml配置文件

app/algorithms/sensor_placement.py

@@ -11,7 +11,7 @@ from sklearn.cluster import KMeans
 from wntr.epanet.toolkit import EpanetException
 from numpy.linalg import slogdet
 import random
-from tjnetwork import *
+from app.services.tjnetwork import *
 import project_info
 
 # 2025/03/12