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/fin/check_account_valid.py

@@ -1,24 +1,31 @@
-from pathlib import Path
 import json
+from pathlib import Path
+
 
 # this is made to demonstrate functionality but it could just as durably be an API call
 # called as part of a temporal activity with automatic retries
 def check_account_valid(args: dict) -> dict:
-    
     email = args.get("email")
     account_id = args.get("account_id")
 
-    file_path = Path(__file__).resolve().parent.parent / "data" / "customer_account_data.json"
+    file_path = (
+        Path(__file__).resolve().parent.parent / "data" / "customer_account_data.json"
+    )
     if not file_path.exists():
         return {"error": "Data file not found."}
-    
+
     with open(file_path, "r") as file:
         data = json.load(file)
     account_list = data["accounts"]
 
     for account in account_list:
         if account["email"] == email or account["account_id"] == account_id:
-            return{"status": "account valid"}
-        
-    return_msg = "Account not found with email address " + email + " or account ID: " + account_id
-    return {"error": return_msg}
+            return {"status": "account valid"}
+
+    return_msg = (
+        "Account not found with email address "
+        + email
+        + " or account ID: "
+        + account_id
+    )
+    return {"error": return_msg}