migration start

tasks/native-business-logic-migration/06-implement-ios-database-layer.md

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+# 06. Implement iOS database layer (Core Data/GRDB)
+
+meta:
+  id: native-business-logic-migration-06
+  feature: native-business-logic-migration
+  priority: P0
+  depends_on: [native-business-logic-migration-03]
+  tags: [implementation, ios, database]
+
+objective:
+- Implement database layer using Core Data for iOS
+
+deliverables:
+- RSSuper.xcdatamodeld
+- DatabaseManager.swift
+- Subscription+CoreDataClass.swift
+- FeedItem+CoreDataClass.swift
+- SearchHistory+CoreDataClass.swift
+- Database migrations
+- FTS virtual table implementation
+
+tests:
+- Unit: Test CRUD operations
+- Unit: Test relationships
+- Unit: Test FTS queries
+- Integration: Test database migrations
+
+acceptance_criteria:
+- Core Data model created with all entities
+- Relationships properly configured
+- FTS search working
+- Migrations implemented
+- Background context used for writes
+
+validation:
+- Run unit tests
+- Verify with Instruments (Core Data editor)
+
+notes:
+- Use NSPersistentContainer
+- Implement FTS using SQLite directly or GRDB
+- Consider using NSPredicate for queries