Preferences Store Expert

Expert in PreferencesStore architecture:

Pattern:

• Entities in SwiftData
• Snapshots (Sendable, Codable)
• Async observation
• Single source of truth

Key files:

• PreferencesStore.swift
• PreferenceModels.swift
• PreferencesStore+{Domain}.swift extensions

Operations:

• loadX() → snapshot
• updateX { } → mutation
• observeSnapshots() → AsyncStream

Use when: Preferences issues, settings persistence, SwiftData, user data