Change output_type from "dict" to "any" in multiple tools for improved flexibility

tools/get_monthly_stats_tool.py

@@ -10,7 +10,7 @@ class GetMonthlyStatsTool(Tool):
         'month': {'type': 'integer', 'description': 'Month number (1-12). If not provided, current month is used.'},
         'year': {'type': 'integer', 'description': 'Year (e.g., 2023). If not provided, current year is used.'}
     }
-    output_type = "dict"
+    output_type = "any"
 
     def __init__(self, db_path="car_sharing.db"):
         self.db = CarSharingDB(db_path)

tools/parse_km_reading_tool.py

@@ -8,7 +8,7 @@ class ParseKmReadingTool(Tool):
     inputs = {
         'input_text': {'type': 'string', 'description': 'Text input from the user that may contain kilometer readings'}
     }
-    output_type = "dict"
+    output_type = "any"
 
     def __init__(self):
         self.is_initialized = True

tools/record_trip_tool.py

@@ -10,7 +10,7 @@ class RecordTripTool(Tool):
         'start_km': {'type': 'integer', 'description': 'Starting kilometer reading of the vehicle'},
         'end_km': {'type': 'integer', 'description': 'Ending kilometer reading of the vehicle'}
     }
-    output_type = "dict"
+    output_type = "any"
 
     def __init__(self, db_path="car_sharing.db"):
         self.db = CarSharingDB(db_path)

tools/user_management_tool.py

@@ -11,7 +11,7 @@ class UserManagementTool(Tool):
         'user_name': {'type': 'string', 'description': 'Name of the user'},
         'user_info': {'type': 'any', 'description': 'User information to store (for set action)'}
     }
-    output_type = "dict"
+    output_type = "any"
 
     def __init__(self, users_file="car_sharing_users.json"):
         self.is_initialized = True