Move CoreData store to app group

Reader/CoreData/PersistentContainer.swift

@@ -33,6 +33,33 @@ class PersistentContainer: NSPersistentContainer, @unchecked Sendable {
         let name = account.id.base64EncodedString().replacingOccurrences(of: "/", with: "_")
         super.init(name: name, managedObjectModel: PersistentContainer.managedObjectModel)
         
+        let groupContainerURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.net.shadowfacts.Reader")!
+        let containerAppSupportURL = groupContainerURL
+            .appendingPathComponent("Library", isDirectory: true)
+            .appendingPathComponent("Application Support", isDirectory: true)
+        try! FileManager.default.createDirectory(at: containerAppSupportURL, withIntermediateDirectories: true)
+        
+        let containerStoreURL = containerAppSupportURL
+            .appendingPathComponent(name)
+            .appendingPathExtension("sqlite")
+        
+        if let existingAppSupport = try? FileManager.default.url(for: .applicationSupportDirectory, in: .userDomainMask, appropriateFor: nil, create: false) {
+            let existingStore = existingAppSupport
+                .appendingPathComponent(name)
+                .appendingPathExtension("sqlite")
+                .relativePath
+                .removingPercentEncoding!
+            if FileManager.default.fileExists(atPath: existingStore) {
+                for ext in ["", "-shm", "-wal"] {
+                    try! FileManager.default.moveItem(atPath: existingStore + ext, toPath: containerStoreURL.relativePath + ext)
+                }
+            }
+        }
+        
+        let desc = NSPersistentStoreDescription(url: containerStoreURL)
+        desc.type = NSSQLiteStoreType
+        
+        persistentStoreDescriptions = [desc]
         loadPersistentStores { description, error in
             if let error = error {
                 fatalError("Unable to load persistent store: \(error)")

Reader/Reader.entitlements

@@ -4,6 +4,10 @@
 <dict>
 	<key>com.apple.security.app-sandbox</key>
 	<true/>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.net.shadowfacts.Reader</string>
+	</array>
 	<key>com.apple.security.network.client</key>
 	<true/>
 </dict>