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axiom-swiftdata-migration-diag - Diagnose SwiftData migration failures

Systematically diagnose SwiftData migration crashes, schema mismatches, relationship errors, data loss, and simulator-device testing gaps.

Tags

Updated: 2026-10-05
SwiftDatadata migrationschema versioningrelationshipsdata integritydiagnosticsiOS testing

Capabilities

Identify migration failure typesInspect versioned schema configurationCheck relationship inverse declarationsEnable SwiftData debug logging

Typical Inputs

Crash messagesSwiftData source codeMigration plan configuration

Typical Outputs

Migration diagnosisSchema and relationship findingsData integrity verification results

What this skill does

  • Identify migration failure types
  • Inspect versioned schema configuration
  • Check relationship inverse declarations
  • Enable SwiftData debug logging
  • Verify migrated data integrity
  • Trace migration paths
  • Diagnose simulator-device discrepancies

Inputs

  • Crash messages
  • SwiftData source code
  • Migration plan configuration
  • Persistent migration data
  • Xcode console output
  • Simulator and device test results

Outputs

  • Migration diagnosis
  • Schema and relationship findings
  • Data integrity verification results
  • Migration testing findings
  • Targeted code and configuration recommendations

Requirements

  • SwiftData project
  • Xcode development environment
  • Access to migration configuration
  • Real device for device testing

Source

  • Spec: SKILL.md

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