docs: improve types for FarmhandContext

src/components/Farmhand/Farmhand.context.js

@@ -1,5 +1,18 @@
+/**
+ * @typedef {import('./Farmhand').farmhand.state} farmhand.state
+ */
 import { createContext } from 'react'
 
-const FarmhandContext = createContext()
+/**
+ * @type {import('react').Context<{
+ *   gameState: farmhand.state
+ *   handlers: {}
+ * }>}
+ */
+// @ts-expect-error
+const FarmhandContext = createContext({
+  gameState: {},
+  handlers: {},
+})
 
 export default FarmhandContext