update code of dash and report of cont_client and devlp abstract of qty

app/services/file_service.py

@@ -2,9 +2,7 @@ from app import db
 import os
 import pandas as pd
 from werkzeug.utils import secure_filename
-from app.utils.file_utils import ensure_upload_folder
-from app.utils.file_utils import get_uploads_folder
-from app.utils.file_utils import ALLOWED_EXTENSIONS
+from app.utils.file_utils import ensure_upload_folder, get_uploads_folder, ALLOWED_EXTENSIONS
 
 # Subcontractor models import
 from app.models.trench_excavation_model import TrenchExcavation
@@ -25,7 +23,8 @@ class FileService:
     # ---------------- COMMON HELPERS ----------------
     def allowed_file(self, filename):
         return ("." in filename and filename.rsplit(".", 1)[1].lower() in ALLOWED_EXTENSIONS)
-
+    
+    # data normalizations 
     def normalize(self, val):
         if val is None or pd.isna(val):
             return None
@@ -35,7 +34,8 @@ class FileService:
             return None
 
         return val.upper()
-
+    
+    # --------------- Sub-contractor service --------------
     # ---------------- SUBCONTRACTOR FILE UPLOAD ----------------
     def handle_file_upload(self, file, subcontractor_id, RA_Bill_No):
 
@@ -76,7 +76,7 @@ class FileService:
 
         except Exception as e:
             db.session.rollback()
-            return False, f"Import failed: {e}"
+            return False, f"Import failed: {e}" 
 
     # ---------------- Trench Excavation (Subcontractor) ----------------
     def process_trench_excavation(self, df, subcontractor_id, RA_Bill_No):
@@ -310,7 +310,7 @@ class FileService:
 
         db.session.commit()
 
-
+    # --------------- Client service --------------
     # ---------------- CLIENT FILE UPLOAD ----------------
     def handle_client_file_upload(self, file, RA_Bill_No):