SwiftData Retirement Inventory

Last Updated: 2026-05-25

This inventory supports Milestone 9 in Refactoring-Plan.md. SwiftData is legacy/prototype infrastructure only. The target app must launch and run active Time Machine flows from SQLite archive + Core Data cache, with local settings stored outside SwiftData where needed.

Current Count

After removing unused imports from pure legacy services, 28 app files still have SwiftData imports.

Launch Container

These files keep SwiftData required at app launch:

• HealthProbe/HealthProbeApp.swift
• HealthProbe/ContentView.swift

Retirement path: - move local settings models (DeviceProfile, MetricTimeoutProfile, OperationLog) to non-SwiftData storage or Core Data cache/local store; - replace prototype snapshot model dependencies in tab roots; - remove .modelContainer(...) once no active view needs @Query or ModelContext.

Legacy Model Definitions

These files define SwiftData @Model classes and are the largest retirement block:

• HealthProbe/Models/AnomalyRecord.swift
• HealthProbe/Models/DeviceProfile.swift
• HealthProbe/Models/HealthRecord.swift
• HealthProbe/Models/HealthSnapshot.swift
• HealthProbe/Models/MetricTimeoutProfile.swift
• HealthProbe/Models/OperationLog.swift
• HealthProbe/Models/SnapshotDelta.swift
• HealthProbe/Models/TypeCount.swift
• HealthProbe/Models/TypeDelta.swift
• HealthProbe/Models/TypeDistributionBin.swift
• HealthProbe/Models/YearlyCount.swift

Retirement path: - replace HealthSnapshot, TypeCount, SnapshotDelta, TypeDelta, YearlyCount, TypeDistributionBin, and HealthRecord active reads with archive/cache DTOs; - replace AnomalyRecord flows with neutral change/diff DTOs; - move DeviceProfile, MetricTimeoutProfile, and OperationLog to a local non-SwiftData store before removing the launch container.

Capture And Maintenance Services

These services still write/read legacy SwiftData transition models:

• HealthProbe/Services/DeltaService.swift
• HealthProbe/Services/HealthKitService.swift
• HealthProbe/Services/ObserverService.swift
• HealthProbe/Services/SnapshotLifecycleService.swift
• HealthProbe/Utilities/TypeCountArchiveRepair.swift

Retirement path: - make capture persist archive observations first and expose only bridge ids while transition UI still exists; - move timeout learning and operation logging out of SwiftData; - delete legacy record repair once old SwiftData stores are no longer opened; - remove snapshot deletion/repair logic after archive/cache navigation replaces prototype snapshots.

UI And View Models

These active surfaces still use @Query, ModelContext, or SwiftData model types:

• HealthProbe/ViewModels/DashboardViewModel.swift
• HealthProbe/ViewModels/DataTypeTemporalDistributionViewModel.swift
• HealthProbe/Views/Dashboard/DashboardView.swift
• HealthProbe/Views/DataTypes/DataTypeTemporalDistributionView.swift
• HealthProbe/Views/DataTypes/DataTypesView.swift
• HealthProbe/Views/DataTypes/RecordChangeEvolutionChart.swift
• HealthProbe/Views/Settings/SettingsView.swift
• HealthProbe/Views/Snapshots/DataTypeSnapshotDetailView.swift
• HealthProbe/Views/Snapshots/SnapshotDetailView.swift
• HealthProbe/Views/Snapshots/SnapshotsView.swift

Retirement path: - replace tab-root @Query snapshot lists with Core Data cache observation queries plus archive ids; - replace detail navigation parameters from SwiftData models to observation/type DTOs; - move Settings device profile and timeout profile rows to local non-SwiftData storage; - keep paged record drill-down and export paths on archive APIs.

Removed During This Pass

The following files no longer import SwiftData because they only use already declared app model types and do not need SwiftData APIs directly:

• HealthProbe/Services/AnomalyDetector.swift
• HealthProbe/Services/IntegrityService.swift

Next Recommended Slices

1. Replace Settings local rows (DeviceProfile, MetricTimeoutProfile) with a small non-SwiftData local store so Settings no longer requires @Query.
2. Replace ContentView preview/container dependency after tab roots stop using @Query.
3. Move DashboardView capture review actions away from ModelContext.
4. Replace Snapshots/Data Types navigation handles with archive/cache DTOs.