# card_stack


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## Response Builders

Shared helpers that assemble OOB response tuples for card stack
operations.

## Navigation Handler

## Update Viewport Handler

Handler for updating the viewport when card count changes.

## Save Width Handler

## Router Initialization

Creates the card stack router with navigation and viewport routes.

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### init_card_stack_router

``` python

def init_card_stack_router(
    state_store:SQLiteWorkflowStateStore, # The workflow state store
    workflow_id:str, # The workflow identifier
    prefix:str, # Route prefix (e.g., "/workflow/review/card_stack")
    urls:ReviewUrls, # URL bundle (populated after routes defined)
)->Tuple: # (router, route_dict)

```

*Initialize card stack routes for review.*