Update README with changes to Article and MyFeature

Updated the README to reflect changes in the Article struct and MyFeature actions, including integrating UndoManager registration and wrapping database operations in undoable.

Author: rcarver

README.md

@@ -11,7 +11,7 @@ prepareDependencies {
   $0.defaultDatabase = try! appDatabase()
   $0.defaultUndoEngine = try! UndoEngine(
     for: $0.defaultDatabase,
-    tables: Article.self, ProjectEdit.self
+    tables: Article.self, Author.self
   )
 }
 ```
@@ -21,7 +21,7 @@ Pass any `@Table` types to track:
 ```swift
 @Table
 struct Article {
-  @Column(primaryKey: true) var id: Int
+  let id: Int
   var name: String
 }
 ```
@@ -30,11 +30,7 @@ struct Article {
 
 ```swift
 import SQLiteUndo
-```
-
-### Basic
 
-```swift
 try await undoable("Set Rating") {
   try await database.write { db in
     try Article.find(id).update { $0.rating = 5 }.execute(db)
@@ -64,7 +60,7 @@ struct MyFeature {
   @ObservableState
   struct State { }
 
-  enum Action: UndoManageableAction {
+  enum Action: UndoManageableAction { // ✅ integrate the store for UndoManager registration
     case undoManager(UndoManagingAction)
     case setRating(Int)
   }
@@ -78,26 +74,24 @@ struct MyFeature {
       case .undoManager:
         return .none
       case .setRating(let rating):
-        return .run { _ in
-          try await undoable("Set Rating") {
-            try await database.write { db in
-              try Article.find(id).update { $0.rating = rating }.execute(db)
-            }
+        try undoable("Set Rating") { // ✅ wrap db operations in undoable
+          try database.write { db in
+            try Article.find(id).update { $0.rating = rating }.execute(db)
           }
         }
+        return .none
       }
     }
   }
 }
 
 struct MyView: View {
   let store: StoreOf<MyFeature>
-
   var body: some View {
     VStack {
       // ... 
     }
-    .setUndoManager(store: store)
+    .setUndoManager(store: store) // ✅ pass the view's UndoManager to the system
   }
 }
 ```