Agent skill

Preferences Store Expert

Work with Leavn PreferencesStore - SwiftData persistence, snapshot patterns, async observation, entity relationships, migration from UserDefaults

View SKILL.md on GitHub Repository
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Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/preferences-store-expert

SKILL.md

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

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