Enhance Dev Experience and Code Quality (#41)

* Format codebase to satisfy linters

* fixing pylance and ruff-checked files

* contributing md, and type and formatting fixes

* setup file capitalization

* test fix

tools/hr/current_pto.py

@@ -1,26 +1,27 @@
-from pathlib import Path
 import json
+from pathlib import Path
 
 
 def current_pto(args: dict) -> dict:
-    
     email = args.get("email")
 
-    file_path = Path(__file__).resolve().parent.parent / "data" / "employee_pto_data.json"
+    file_path = (
+        Path(__file__).resolve().parent.parent / "data" / "employee_pto_data.json"
+    )
     if not file_path.exists():
         return {"error": "Data file not found."}
-    
+
     data = json.load(open(file_path))
     employee_list = data["theCompany"]["employees"]
 
     for employee in employee_list:
         if employee["email"] == email:
             num_hours = int(employee["currentPTOHrs"])
-            num_days = float(num_hours/8)
+            num_days = float(num_hours / 8)
             return {
                 "num_hours": num_hours,
                 "num_days": num_days,
             }
-        
+
     return_msg = "Employee not found with email address " + email
-    return {"error": return_msg}
+    return {"error": return_msg}