Create rule flow core infrastructure and routing

app/create/context/CreateFlowContext.tsx

@@ -0,0 +1,64 @@
+"use client";
+
+import { createContext, useContext, useState, type ReactNode } from "react";
+import type {
+  CreateFlowState,
+  CreateFlowContextValue,
+  CreateFlowStep,
+} from "../types";
+
+const CreateFlowContext = createContext<CreateFlowContextValue | null>(null);
+
+interface CreateFlowProviderProps {
+  children: ReactNode;
+  initialStep?: CreateFlowStep | null;
+}
+
+/**
+ * Provider component for Create Flow state management
+ * 
+ * This is a basic implementation that will be expanded in CR-56
+ * with full navigation logic, state persistence, and validation.
+ */
+export function CreateFlowProvider({
+  children,
+  initialStep = null,
+}: CreateFlowProviderProps) {
+  const [state, setState] = useState<CreateFlowState>({});
+  const [currentStep] = useState<CreateFlowStep | null>(
+    initialStep,
+  );
+
+  const updateState = (updates: Partial<CreateFlowState>) => {
+    setState((prevState) => ({
+      ...prevState,
+      ...updates,
+    }));
+  };
+
+  const contextValue: CreateFlowContextValue = {
+    state,
+    currentStep,
+    updateState,
+  };
+
+  return (
+    <CreateFlowContext.Provider value={contextValue}>
+      {children}
+    </CreateFlowContext.Provider>
+  );
+}
+
+/**
+ * Hook to access Create Flow context
+ * 
+ * @throws Error if used outside CreateFlowProvider
+ * @returns CreateFlowContextValue
+ */
+export function useCreateFlow(): CreateFlowContextValue {
+  const context = useContext(CreateFlowContext);
+  if (!context) {
+    throw new Error("useCreateFlow must be used within CreateFlowProvider");
+  }
+  return context;
+}