Replace Redux with context API

1. the tutorial uses redux which is a nice learning experience but I think it's a bit too much for this app. switching to context will mean less dependencies too 👍🏽

The issue suggests replacing Redux with the React Context API throughout the app. First, examine the current Redux setup: look for store configuration, actions, and reducers. Identify components using Redux (like `useSelector` and `useDispatch`). Plan to create context providers and replace Redux state management. Check for any existing tests related to state to ensure the refactor doesn't break functionality.

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