Update documentation and code snippets

docs/code_snippets/quickstart/simple_app.py

@@ -6,6 +6,7 @@ app = App(
     prompt=">> ",
     initial_message="Simple App",
     farewell_message="Goodbye!",
+    repeat_command_groups_printing=False
 )
 orchestrator = Orchestrator()
 
@@ -14,11 +15,11 @@ main_router = Router(title="Main commands")
 
 
 # 3. Define command and its handler
-@main_router.command(
-    Command(
-        "hello", description="Prints greeting message", flags=Flag("name")
-    )
-)
+@main_router.command(Command(
+    "hello", 
+    description="Prints greeting message", 
+    flags=Flag("name")
+))
 def hello_handler(response: Response):
     """This handler will be called for 'hello' command."""
     name = response.input_flags.get_flag_by_name("name")

docs/code_snippets/quickstart/task_manager/handlers.py

@@ -1,7 +1,7 @@
 from typing import cast
 
 from argenta import Command, Response, Router
-from argenta.command.flag import ValidationStatus, Flag, Flags
+from argenta.command.flag import Flag, Flags, ValidationStatus
 from argenta.di import FromDishka
 
 from .repository import Priority, Task, TaskRepository
@@ -9,26 +9,25 @@ from .repository import Priority, Task, TaskRepository
 router = Router(title="Task Manager")
 
 
-@router.command(
-    Command(
+@router.command(Command(
         "add-task",
         description="Add a new task",
-        flags=Flags(
-            [
+        flags=Flags([
                 Flag("description"),
                 Flag("priority", possible_values=["low", "medium", "high"]),
-            ]
-        ),
-    )
-)
+            ]),
+    ))
 def add_task(response: Response, repo: FromDishka[TaskRepository]):
     description_flag = response.input_flags.get_flag_by_name("description")
+    
     if not description_flag or not description_flag.status == ValidationStatus.VALID:
         print("Error: --description flag is required.")
         return
+        
     task_description = description_flag.input_value or ""
 
     priority_flag = response.input_flags.get_flag_by_name("priority")
+    
     if priority_flag and priority_flag.status == ValidationStatus.VALID:
         priority_value = priority_flag.input_value
     else:
@@ -38,12 +37,14 @@ def add_task(response: Response, repo: FromDishka[TaskRepository]):
 
     task = Task(description=task_description, priority=priority)
     repo.add_task(task)
+    
     print(f"Added task: '{task.description}' with priority '{task.priority}'")
 
 
 @router.command(Command("list-tasks", description="List all tasks"))
 def list_tasks(response: Response, repo: FromDishka[TaskRepository]):
     tasks = repo.get_all_tasks()
+    
     if not tasks:
         print("No tasks found.")
         return