implement components

agent/open-code/nodes/plan-code/step-3.txt

@@ -0,0 +1,22 @@
+```tsx
+// src/context/TodoContext.tsx
+import React, { createContext, useContext, useReducer } from 'react';
+
+type Todo = { id: string; text: string; completed: boolean; };
+
+type TodoState = { todos: Todo[]; };
+type TodoAction = 
+  | { type: 'ADD_TODO'; payload: string }
+  | { type: 'TOGGLE_TODO'; payload: string }
+  | { type: 'DELETE_TODO'; payload: string };
+
+const TodoContext = createContext<{
+  state: TodoState;
+  dispatch: React.Dispatch<TodoAction>;
+} | undefined>(undefined);
+
+export const TodoProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
+  const [state, dispatch] = useReducer(todoReducer, { todos: [] });
+  return <TodoContext.Provider value={{ state, dispatch }}>{children}</TodoContext.Provider>;
+};
+```