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Platform Composition and Lifetimes

Termind has separate native application targets—TFM for macOS and TFI for iOS/iPadOS—but both compose the same layered frameworks into a platform-owned runtime. The application target owns startup, native lifecycle hooks, dependency assembly, platform UI, and the boundary between durable app data and live UI/session state. Shared frameworks do not import either app target.

The most important lifetime rule is: stores, coordinators, and durable-data services are app-wide; desktop workspaces belong to a window, mobile workspaces belong to a persistent UIKit scene session (managed by the app), and navigation/presentation belongs to the individual SwiftUI scene. Live transports belong to those workspaces, not to an app-wide interchangeable workspace pool.

UI structure and design guides

This page explains runtime composition and lifetime boundaries. For the component trees and user-facing presentation rules, continue with:

TFM Desktop UI Architecture: window shell, persistent workspace deck, split panes, Vault list/detail, managed cards and native transcript ownership.
TFI Mobile UI Architecture: registered feature stacks, scene-local routes, shared workspaces, usable-region layout, mobile toolbars and native input continuity.
UI Design Principles and Shared Presentation Boundaries: what the platforms share, where their visual/input policies intentionally differ, and how to extend them without merging runtime ownership.

Lifetime map

Scope	macOS	iOS/iPadOS	Examples
Process / app model	One `AppModel`, retained in `TermindApp` state	One `MobileAppModel`, created before the `WindowGroup`	SwiftData container, host library, settings and sync coordinators, shared remote coordinator, histories, transfer and forwarding services, entitlement/review state
Native window / scene	`WindowModel` per main window	`MobileSceneModel` per SwiftUI scene, bound to an app-managed `MobileWorkspaceSessionModel` by UIKit session ID	destination, selection, sheets, navigation routes, focused-value command routing, scene-local assistant navigation
Workspace and session	Desktop `Workspace` and panes are owned by one `WindowModel`	Each `MobileWorkspaceSessionModel` owns its own ordered descriptors and live `MobileWorkspace`s; `MobileAppModel` coordinates all sessions	terminal or SFTP UI, connection journey, transport, terminal state, workspace-specific operations
Durable state	SwiftData, Keychain, supported UserDefaults and sync stores	Same categories, plus an app-written `MobileWorkspaceStore` snapshot keyed by persistent UIKit session ID	Hosts and settings, secret references, histories, mobile per-window workspace descriptors
Ephemeral runtime state	Never restored as a live connection	Never restored as a live connection	SSH/SFTP transports, authentication journeys, one-shot URL credentials, in-flight runs/transfers

A useful consequence is that sharing a desktop AppModel does not make its WindowModels share selection, sidebar/search state, or workspaces. On mobile, two native windows opening the same Host create independent workspaces and transports. A workspace link received in another window activates the descriptor's existing native owner rather than copying or opening it there. Repeated selection within the owner reuses the published workspace and its initial connection attempt.

macOS composition

TermindApp.init() is the desktop composition root. Before opening data it cleans previous context attachments, sets up the scrubber web client and chooses the stored launch language (or a screenshot-demo language). A normal launch constructs one on-disk SwiftData ModelContainer, prepares settings and metrics persistence, makes the Keychain-backed secret store, and assembles AppModel with repositories, sync coordinators, logging, histories, the device directory, and a common RemoteConnectionCoordinator. The directory uses the Vault journal's stable installation ID and MacDeviceName.current: the trimmed kern.hostname, falling back to DeviceKit's Device.current.safeDescription when unavailable or empty. Startup fails closed: an inability to open the local database calls fatalError rather than substituting an empty store.

Debug test and screenshot launches still run the real app entrypoint, but not the normal disk-backed runtime. XCTest detection uses XCTestConfigurationFilePath in DEBUG; it selects an in-memory container, a private metrics defaults suite, disabled file logging, unrestricted test Pro access, no Vault/History/Device/Metrics/Settings cloud coordinators, no local host defaults or production memory store, and a window size store without persisted defaults. A screenshot-demo configuration also uses an in-memory container but returns early with demo hosts, AI, metrics and onboarding instead of constructing the normal production services. Neither path is a fallback for a failed production database open: construction errors still fail startup.

flowchart TD
    Launch["TermindApp init"] --> Store["TermindPersistence makeContainer"]
    Store --> Persistence["Settings and metrics persistence"]
    Store --> Hosts["HostLibraryModel and SwiftData repositories"]
    Launch --> Secrets["KeychainSecretStore"]
    Launch --> Logging["LaunchFileLogService"]
    Launch --> Remote["RemoteConnectionCoordinator"]
    Persistence --> Sync["Vault History Device Metrics and Settings sync coordinators"]
    Hosts --> App["AppModel app-wide runtime"]
    Secrets --> App
    Logging --> App
    Remote --> App
    Sync --> App
    App --> Group["WindowGroup main"]
    Group --> Window["WindowModel per window"]
    Window --> Root["RootView retains window"]
    App --> Root
    Window --> Workspace["Window-owned Workspaces and panes"]
    App --> AuthWindow["External authentication Window"]

This diagram shows the desktop composition root and the split between one app runtime and per-window workspace ownership.

Shared desktop runtime

AppModel is the cross-window coordinator and service owner. It owns the host and credential projections, known-hosts/snippet/forwarding/transfer libraries, terminal and SSH/SFTP settings, histories, AI/skills/memory, metrics, entitlement and review controllers, remote connection coordination, SFTP edit/transfer services, forwarding, MCP services, and sync/outbox integration. It also owns the global conversation store and one speech transcription coordinator, avoiding duplicate conversation state and competing audio taps across windows.

The model keeps only weak registrations for open WindowModels. Registration injects shared stores and coordinators into a window and attaches that window's assistant library to the process-wide conversation store. Fan-out operations—such as a host route change or deletion—find registered windows and disconnect or close the affected window-owned workspaces. A desktop deletion request first persists the repository marker/outbox jobs, clears local histories and projects the Host away; the registered outbox handlers close panes across windows, cancel transfers, stop forwarding and finalize repository cleanup. A failed request reports a storage error instead of projecting the removal. This is coordination, not ownership transfer: the window remains responsible for its own UI and workspaces.

TermindApp creates a WindowGroup(id: "main", for: UUID.self). Each scene receives a fresh WindowModel (except a request-less debug screenshot scene, which can receive demo window state), places it in RootView, and injects the same AppModel and SwiftData container through the SwiftUI environment. RootView retains that model in @State, registers it on appearance, and exposes it via the environment and focused scene value. The independent Authentication Request window shares app dependencies but is reserved for external authentication presentation; .commandsRemoved() prevents normal Window-menu creation.

Scene policy is separate from store policy. In DEBUG, a default XCTest host suppresses automatic launch of both the main and authentication scenes unless TERMIND_WINDOW_TESTS=1 or screenshot-demo mode is active. Tests disable restoration for both scenes even when visible windows are opted in; screenshot mode disables main-scene restoration, while ordinary launches use automatic launch and restoration. The delegate also refuses Dock reopen while test-window suppression applies, refuses to quit the test host when its last fixture window closes, and skips starting metrics activity/menu in tests. Explicit window/focus tests use .requiresVisibleWindow and opt in with TERMIND_WINDOW_TESTS=1 (or Xcode's TEST_RUNNER_TERMIND_WINDOW_TESTS=1 forwarding); suppression is not a ban on explicitly created offscreen test fixtures. The default test-host checks assert no visible windows and no reopen. To exercise a gated suite, use TEST_RUNNER_TERMIND_WINDOW_TESTS=1 xcodebuild -project Termind.xcodeproj -scheme TFM -destination 'platform=macOS' -onlyUsePackageVersionsFromResolvedFile -only-testing:TFMTests/<Suite> test; the test host itself checks TERMIND_WINDOW_TESTS=1. Keep routine logic and offscreen tests on the default suppressed path.

Window-local desktop state

WindowModel contains the state that may legitimately differ in another desktop window: navigator destination, dynamic workspaces and panes, sidebar and search behavior, workspace selection, local presentations, and window-specific assistant surfaces. RootView preserves mounted workspace-native views when a different destination becomes visible so terminal grids, scrollback, and SFTP UI state survive navigation.

A host-opening action is centralized in AppModel, which chooses the requested protocol, but it opens into the caller's WindowModel. That window assigns one connection-history event to each saved-host SSH, Telnet or SFTP pane. Closing the pane/workspace ends the event before disconnecting, while moving a live pane preserves it and reopening creates a new event. External temporary and Serial panes are not recorded; a crash may leave endedAt absent. A batch can deliberately create separate window-local workspaces or one workspace with several panes. External SSH/SFTP/Telnet URLs likewise create a temporary workspace in the target window without adding a saved Host; Telnet URLs containing an advisory password require explicit confirmation first.

MainWindowCoordinator binds native NSWindows to WindowModels. It processes new-window and workspace-move requests, preserves system-restored frames (a restored scene has no pending move request), saves normal window size only at appropriate boundaries, and unregisters then closes a model when its native window closes. Restoring a window thus does not replay a moved workspace or reopen its live connection. The AppKit delegate handles Dock reopen/new-window behavior and may retain the process after the last window according to menu-bar metrics configuration.

Desktop lifecycle and termination

The AppKit delegate starts native appearance/login handling and, outside tests, starts metrics activity and the metrics menu once AppModel is available. For quiet login launches it hides the normally constructed window rather than running window-less; a one-shot key-window observer and three-second disarm prevent a later user-opened window from being hidden. On app activation it refreshes both entitlement state and the current DeviceRecord display name from MacDeviceName.current; the synchronized directory can therefore update without rewriting connection events. TFI refreshes its name directly from DeviceKit's Device.current.safeDescription on active-scene transitions. On termination the desktop app first checks for pending external edits; after user confirmation, it saves window sizing and invokes AppModel.shutdownForTermination().

Shutdown is deliberately idempotent and bounded by the delegate. applicationShouldTerminate returns .terminateLater while it rechecks external SFTP edits; if pending changes exist and the user cancels the alert, it replies false, clears the pending-termination flag and does not start cleanup. An accepted quit saves the ordinary window size before cleanup. shutdownForTermination() immediately fences assistant admission, cancels pending run preparation, stops the app-wide conversation store (including conversations no longer shown in a registered window) and awaits terminal saves; it also suspends memory and edit monitoring, shuts down metrics and speech, closes registered windows, and cancels SFTP work, external authentication, forwarding and the outbox. It concurrently awaits MCP and SFTP cancellation, then closes agent background commands and connection pools after the assistant drains. Repeated calls return the same cleanup task. The delegate replies true to macOS when cleanup finishes or after a once-only three-second fallback; that bound applies to the quit reply, not a guarantee that every asynchronous drain finished. applicationWillTerminate repeats cleanup safely.

sequenceDiagram
    participant Delegate as AppKit delegate
    participant Model as AppModel
    participant Assistant as Conversation store
    participant Services as Runtime services
    Delegate->>Delegate: Recheck pending external edits
    alt Quit cancelled
        Delegate-->>Delegate: Reply false without cleanup
    else Quit accepted
        Delegate->>Model: Save window size and start shutdown
        Model->>Assistant: Fence admission and cancel preparations
        Model->>Assistant: Stop stored conversations
        Model->>Services: Close windows and stop runtime work
        Model->>Assistant: Await terminal persistence
        Model->>Services: Await MCP and SFTP cancellation
        Model->>Services: Close agent commands then connection pools
        alt Cleanup completes first
            Model-->>Delegate: Cleanup task completes
        else Three second fallback wins
            Delegate-->>Delegate: Timeout reached
        end
        Delegate-->>Delegate: Reply true once
    end

Desktop termination orders assistant draining before agent connection teardown, but the native quit reply can precede completion of that drain.

Mobile composition

TermindIOSApp runs language-preference migration and constructs one startup Result<MobileAppModel, Error>. It selects .testing() dependencies when XCTest is detected and .live() otherwise. The WindowGroup renders MobileStartupView, which injects the shared model container into successful scene content or presents an unavailable-data screen if construction failed; unlike macOS, failure is surfaced in the window instead of terminating the process. MobileAppDelegate handles native scene configuration and discard notifications, including discards arriving before the app model has been assigned.

flowchart TD
    Launch["TermindIOSApp init"] --> Deps["MobileAppDependencies live or testing"]
    Deps --> MobileApp["MobileAppModel app-wide runtime"]
    MobileApp --> Container["SwiftData ModelContainer"]
    MobileApp --> Services["Libraries sync transfer forwarding assistant metrics"]
    MobileApp --> Sessions["Workspace session registry keyed by UIKit session ID"]
    MobileApp --> Group["WindowGroup"]
    Group --> Root["MobileRootView per scene"]
    Root --> Scene["MobileSceneModel per scene"]
    Scene --> Nav["Tab and navigation selection"]
    Scene --> Owner["Own UIKit workspace session"]
    Sessions --> Owner
    Owner --> Workspace["Session-owned MobileWorkspaces"]
    Workspace --> Transport["Workspace-owned connection"]
    Root --> Phase["scenePhase"]
    Phase --> MobileApp
    Phase --> Background["Suspend or expire runtime work"]

This diagram shows app-managed mobile workspace sessions with distinct native-window ownership and scene-local navigation.

Dependency assembly and test seams

MobileAppDependencies is the mobile assembly seam. Live dependencies create a launch file logger and a single RemoteConnectionCoordinator, which is passed to both mobile workspace connections and metrics; the same logger is passed to forwarding. Test dependencies use in-memory mode and permit replacement of the host repository, defaults, background-task manager, workspace connection services, metrics services, review controller, container, workspace store, live-activity controller, and forwarding factory.

MobileAppModel creates or receives its ModelContainer, then builds the host repository, outbox, Keychain or in-memory secret store, settings/metrics persistence and sync coordinators, host and credential libraries, AI/skills/memory, assistant, metrics, transfers and SFTP edits, forwarding, histories, the generic device directory, and live activities. The device directory and connection history use separate repositories on the same Vault context and share the stable installation ID; each repository journals its own payload kind transactionally. Session-owned workspace publication notifies the app to start an event and explicit close ends it. Production uses Termind.store under Application Support; tests or supplied repositories use an in-memory container and do not enable production live activities or sync coordinators.

The app model wires cross-service invalidation at construction. Local deleteHost first disconnects the assistant, closes saved descriptors and live workspaces for that Host, invalidates edits, cancels transfers, retires forwarding and metrics, then requests repository deletion, projects the removal, and starts the outbox; repository failure is reported in error rather than completing that projection. Earlier runtime cleanup is not rolled back. The deletion request commits a hidden-host marker and ordered outbox jobs together, so durable reference cleanup and final removal can resume after a crash. Outbox handlers also close workspaces and clear histories, cancel transfers, and remove forwarding rules. Host route edits disconnect matching live protocols rather than deleting descriptors. Remote sync application computes a change plan before replacing the local projection: changed routes invalidate edits, sessions, transfers and forwarding, while removed Hosts additionally close saved workspaces and clear histories/metrics. This keeps runtime work from using stale configuration.

MobileSceneDelegate supplies its UIKit session's persistent identifier. MobileBoundSceneRoot constructs a MobileSceneModel in @State for that ID and passes it to MobileRootView, which retains it in @State, reports scenePhase to the shared app model and exposes a focused scene value. The root uses a sidebar-adaptable TabView with a NavigationStack per feature. The scene model owns destination and workspace selection, presentations and assistant navigation, but obtains its MobileWorkspaceSessionModel from the app by persistent session ID. Assistant conversation storage remains shared while scene-specific drafts and selection remain independent.

The UIKit MobileSceneDelegate holds a pending Home Screen quick action per scene; MobileBoundSceneRoot passes its action and one-shot consumer into MobileRootView. The root consumes it on change and asks its own MobileSceneModel to open the connection picker or open a recent Host using the Host's current preferred connection kind. Unknown shortcuts are rejected; a missing or unusable Host presents the workspace-unavailable alert instead of restoring a stale session. The shortcut list is refreshed from local connection history and host changes, limited to three openable recent Hosts.

MobileAppModel manages a registry of MobileWorkspaceSessionModels, one for each persistent native scene ID. Each session owns its own live workspaces, ordered descriptors and open/close behavior; app.workspaces is an aggregate for global lifecycle and Host cleanup, not a shared pool from which scenes select. Creating a new workspace for the same Host in another window creates a distinct connection. A workspace URL resolves the owning session and asks UIKit to activate that window; if the owner is unavailable, the receiving scene shows an unavailable alert without opening a replacement. In its own session, openWorkspace(_:) reuses a live instance or validates a descriptor's Host, publishes the new workspace, then connects it. Repeated selection does not create another attempt, even after an initial connection failure; retry is explicit.

The app-owned MobileWorkspaceStore writes a complete snapshot of descriptor lists keyed by persistent UIKit session ID, preventing one window's save from overwriting another's. On cold launch loadRecentWorkspaces() reads and prunes descriptors whose Hosts are absent, publishes no live connection and clears leftover Live Activities. The first bound window consolidates unassigned and saved session descriptors into its session, preserving IDs and order even if old UIKit sessions were discarded at launch; later windows start independently. A descriptor contains only workspace ID, Host ID, title and connection kind, excluding commands, paths, credentials and transport state. Opening a saved descriptor connects on demand. Closing removes the live workspace and saved descriptor; external-link workspaces are not persisted. If a snapshot is malformed or unsupported, the store reports an error and fences subsequent saves instead of overwriting it with an empty snapshot.

Disconnect is not discard. UIKit may reclaim a scene while its session remains restorable: sceneDidDisconnect removes phase tracking but keeps its workspace owner. Reconciliation against UIApplication.openSessions transfers workspaces from truly missing sessions into an active session only after saving the new ownership snapshot; an unavailable save leaves them with their old owner and reports an error. A later explicit didDiscardSceneSessions closes that session's workspaces and descriptors, including transferred workspaces originally owned by the discarded session. The app delegate queues early discards until startup has assigned the model.

flowchart TD
    Store["App owned descriptor snapshot"] --> Bind["First UIKit session binds on cold launch"]
    Bind --> Owner["Window owned workspace session"]
    Owner --> Open["Publish workspace then connect on demand"]
    Owner --> Reclaim["Scene disconnects but session stays open"]
    Reclaim --> Owner
    Owner --> Missing["Native session no longer open"]
    Missing --> Save["Save transfer to active session"]
    Save --> Owner
    Owner --> Discard["Explicit native session discard"]
    Discard --> Close["Close owner workspaces and descriptors"]

This mobile ownership flow distinguishes reconnect-free handoff of a truly missing native session from transient scene disconnection and explicit discard.

Mobile foreground and background boundaries

Scene phases are aggregated by scene ID. The app only enters global background behavior when every tracked scene is backgrounded, so one backgrounded scene cannot suspend work still visible in another. Removing the last active scene can trigger that transition when other tracked scenes remain backgrounded; removing the last tracked scene does not. On that transition it stops edit monitoring, suspends memory and sync, pauses metrics and outbox work, suspends recording, and starts a finite platform background task. If the task expires, it asks each live workspace to handle background expiration, stops forwarding, pauses transfers, and expires assistant work. Expiration detaches active workspace transports, clears interactive authentication state and marks a foreground reconnect intent; returning before expiration does not force a reconnect. It updates Live Activities but does not use them to retain connections.

MobileBackgroundController owns one UIKit background-task lease. Beginning another lease finishes the old one; foreground finish() and expiration retire a valid identifier at most once. Expiration calls its cancellation callback synchronously before ending the task, even when UIKit expires during begin; a late callback for a retired lease is ignored. If UIKit returns .invalid, the controller expires immediately without trying to end an invalid identifier. Async disconnects started by the callback are best effort, not a guarantee that every drain completed before the lease ends.

When any scene becomes active, mobile refreshes its current device-directory record, reenables edit monitoring, finishes the background task, asks existing workspaces to resume, reconciles sync, restarts the outbox and metrics, refreshes entitlement asynchronously, and updates activities. reconcileSync() calls start() on Vault, History, Device, Metrics and Settings coordinators only if at least one tracked scene is .active and Pro permits Vault sync; otherwise it pauses all five. This is a foreground/entitlement gate, not an override of user sync choices: each coordinator's CloudSyncLifecycle.start() separately checks the global iCloud switch and any applicable optional preference and pauses if disabled. setSyncEnabled(_:key:) gates enabling on Pro, writes the selected preference, migrates custom passwords when enabling the global iCloud switch, then reconciles. MobileRootView also reconciles when Pro access changes. Desktop AppModel starts/reconciles those five coordinators against Pro access without a scene-phase gate, but their individual preferences still govern actual activation. Returning before expiration preserves healthy connections; after expiration, workspace recovery follows the workspace's reconnection journey. Expired forwarding and pending interactive authentication are stopped rather than silently restarted on foreground.

stateDiagram-v2
    [*] --> Tracked: Scene reports phase
    Tracked --> Foreground: Any tracked scene active
    Foreground --> Background: All tracked scenes backgrounded
    Background --> Foreground: A scene becomes active
    Background --> Expired: Background lease expires
    Expired --> Foreground: A scene becomes active
    Foreground --> Tracked: No tracked scene active
    Tracked --> Background: All tracked scenes backgrounded

Mobile phase aggregation controls a single background lease and foreground sync eligibility; expiration retires live runtime work, not persisted workspace descriptors. An empty scene registry is not treated as all-backgrounded.

Ownership invariants and safe extension points

Preserve these boundaries

Do not make a window or scene the owner of app services. Inject app-wide services into per-window/per-scene presentation models; use the central model for operations that must affect all live owners.
Do not make app-wide navigation or workspace state. Desktop window workspaces and mobile persistent scene-session workspaces must remain independently mutable; the app aggregates the latter only to coordinate global lifecycle and cleanup.
Do not persist live connection state as restoration. Mobile descriptors are intentionally limited; desktop state restoration must not reconnect active workspaces merely because a window returns.
Publish a mobile workspace in its owner session before connect(). Changing this order risks duplicate initial attempts on repeated selection within that window; cross-window links should activate its owner rather than make a copy.
Retire runtime resources before replacing configuration. Host deletion, route changes, and remote sync need to invalidate workspace sessions, transfers, edits, forwarding, and dependent services through their existing callbacks/change plans.
Keep test composition explicit. Extend MobileAppDependencies or AppDependencies when a platform integration needs a substitute; do not add test-only global singletons to production code.

Adding a shared service

For a service that must be unique across windows or scenes, construct it at the platform composition root, place it on AppModel or MobileAppModel, and provide narrow callbacks or accessors to local UI models. Decide its shutdown/suspension contract at the same time: macOS termination must include it in shutdownForTermination(), while mobile must define whether it pauses on all-scenes-background, expires with the background task, or safely survives foreground transitions.

For a service that represents navigation, focus, a sheet, an editor draft, a desktop workspace/pane, or a scene-specific command target, keep it in WindowModel or MobileSceneModel. For a connection or terminal/browser state, keep it on the workspace/session and ensure the app-level lifecycle only invokes its explicit suspend, resume, disconnect, or close APIs.

Focused verification

Tests exercise the lifetime contracts rather than merely constructing views:

MobileAppTests verifies saved descriptors reopen on demand without replaying commands or paths, links route to a descriptor's existing owner for a single initial connection, failed first opens require explicit retry, and Host deletion removes opened and unopened descriptors.
MobileWorkspaceSessionTests verifies separate windows create independent workspaces, cold-launch descriptor consolidation, native session reclaim versus explicit discard, and ownership transfer without reconnecting or losing saved order.
MobileWorkspaceConnectionRecoveryTests verifies background expiration disconnects affected mobile workspaces and foreground resumes them, while a quick foreground return preserves a healthy connection.
MobileForwardingLifecycleTests verifies all-scenes background is required before expiration, and expired forwarding/authentication does not revive merely on foreground.
MobileBackgroundControllerTests covers stale callbacks, exactly-once task retirement, synchronous expiration during lease acquisition and invalid UIKit identifiers; MobileAppTests covers scene removal and quick versus expired foreground returns.
MobileHomeScreenQuickActionTests covers recent-host shortcut selection, payload decoding and one-shot consumption by the scene delegate.
AppTestHostTests checks default test-host window suppression, Dock-reopen refusal and survival after the last fixture window closes; .requiresVisibleWindow gates tests that actually show windows or take focus.
AppTerminationTests verifies shutdown cancels stored and preparing assistant work, joins even an unstored captured failure before closing agent resources, fences new work, and replies once whether cleanup or the three-second fallback wins.
RepositoryOutboxTests verifies a Host deletion request commits the hiding marker and complete outbox atomically.
DockMenuTests verifies Dock-created desktop windows receive distinct WindowModels in the Welcome state and retain per-window UI state independently.
ExternalConnectionURLTests verifies external desktop connections are temporary and unsaved, including the Telnet-password confirmation boundary.

See System Boundaries for framework ownership, Agent Runtime and Assistant for shared agent execution state, Persistence and Secrets for storage policy, and SSH Session Lifecycle for per-session connection behavior.

Vault and Device follow the master iCloud switch and Pro eligibility. History, Metrics and Settings retain optional selections. Both apps render shared CloudSyncSettingsContent with one aggregate status and the optional switches in History → Metrics → Settings order.

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