Update SecureStorageSample

SecureStorageSample/StorageKeys/AppGroup/AppGroupUserProfileKey.swift

@@ -23,6 +23,8 @@ extension StorageKey where Value == UserProfile {
     )
 
     /// Creates a version of the key for a different App Group directory.
+    /// Sample-only: production apps should avoid dynamic App Group configuration and
+    /// migrate when storage settings change.
     nonisolated static func appGroupUserProfileKey(
         directory: FileDirectory = .documents
     ) -> StorageKey {

SecureStorageSample/StorageKeys/EncryptedFileSystem/SessionLogsKey.swift

@@ -17,6 +17,8 @@ extension StorageKey where Value == [String] {
     )
 
     /// Builds a variant with a custom PBKDF2 iteration count for demo purposes.
+    /// Sample-only: production apps should treat encryption parameters as fixed and
+    /// perform a migration if they must change.
     nonisolated static func sessionLogsKey(iterations: Int) -> StorageKey {
         StorageKey(
             name: "session_logs.json",

SecureStorageSample/StorageKeys/FileSystem/UserProfileFileKey.swift

@@ -17,6 +17,8 @@ extension StorageKey where Value == UserProfile {
     )
 
     /// Builds a profile key for an alternate file directory.
+    /// Sample-only: production apps should keep directory decisions static; if the
+    /// storage domain changes, migrate instead of toggling the key at runtime.
     nonisolated static func userProfileFileKey(directory: FileDirectory = .documents) -> StorageKey {
         StorageKey(
             name: UserProfile.storageKeyName,

SecureStorageSample/StorageKeys/Keychain/CredentialsKey.swift

@@ -18,6 +18,8 @@ extension StorageKey where Value == Credential {
     )
 
     /// Builds a key with custom Keychain accessibility or access control options.
+    /// Sample-only: production apps should not allow dynamic key configuration; treat
+    /// StorageKey settings as fixed and migrate if security policies change.
     nonisolated static func credentialsKey(
         accessibility: KeychainAccessibility = .afterFirstUnlock,
         accessControl: KeychainAccessControl? = nil

SecureStorageSample/StorageKeys/Platform/SyncableSettingKey.swift

@@ -17,6 +17,8 @@ extension StorageKey where Value == String {
     )
 
     /// Builds a variant to demonstrate different availability and sync policies.
+    /// Sample-only: production apps should keep availability and sync policies static;
+    /// if these change, migrate the data rather than altering the key at runtime.
     nonisolated static func syncableSettingKey(
         availability: PlatformAvailability = .all,
         syncPolicy: SyncPolicy = .never