Agent skill
UserDefaults Migrator
Find UserDefaults.standard usage in Leavn, migrate to PreferencesStore/SwiftData, create entities, ensure single source of truth
Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/other/userdefaults-migrator-willsigmon-sigstack-site
SKILL.md
UserDefaults Migrator
Migrate UserDefaults to SwiftData:
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Find usage:
grep -r "UserDefaults.standard" -
Categorize:
- Keep: Tests, debug flags, widgets
- Migrate: User preferences, stats, settings
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Create entity if needed
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Update code to use PreferencesStore
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Write migration logic
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Archive old keys
Use when: UserDefaults cleanup, preference migration, SwiftData entities
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