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name: Preferences Store Expert description: Work with Leavn PreferencesStore - SwiftData persistence, snapshot patterns, async observation, entity relationships, migration from UserDefaults allowed-tools: Read, Edit, Grep

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