Home Assistant iOS project layout, build setup, and the "World" dependency-injection pattern. Use when starting work in the repo, deciding where code lives across targets (App, Shared, Watch, CarPlay, Extensions), accessing dependencies through the global `Current`, or setting up dependencies and code signing.
Swift code style, linting, logging, assets, and idioms for Home Assistant iOS. Use when writing or formatting Swift, running SwiftFormat/SwiftLint, referencing SF Symbols or Material Design icons, logging, or using the with() helper.
Asynchronous code and server networking conventions. Use when writing async/await, Tasks, actors, or Combine, deciding whether to touch PromiseKit, annotating view models with @MainActor, or calling the Home Assistant server via HAKit.
Localization via SwiftGen-generated L10n accessors and the en.lproj .strings files. Use when adding or changing user-facing strings, working with the L10n/CoreStrings/FrontendStrings tables, or dealing with Lokalise-managed translations.
The cross-platform MagicItem action model shared by Widgets, Watch, CarPlay, and App Shortcuts. Use when adding or changing item types or action overrides, or touching anything that persists MagicItem via Codable.
Data persistence across GRDB, Realm, and UserDefaults. Use when adding or migrating a persistent model, choosing a storage layer, implementing DatabaseTableProtocol, or reading/writing config for Watch, CarPlay, widgets, or the entity registry.
Live Activities and push notifications across the local-push and remote-push delivery flows. Use when implementing or fixing notifications, Live Activities, payload parsing/promotion, alerting behavior, or the SharedPush parser (including the vendored relay copy).
How these AI agent skills are structured and kept up to date. Use when adding, editing, splitting, or reorganizing skills under .agents/skills, or updating the AGENTS.md router.
Unit and snapshot testing conventions. Use when writing tests, mocking dependencies by overriding Current, running the Tests-Unit scheme, or adding snapshot tests for new SwiftUI views.
SwiftUI and UIKit UI conventions for Home Assistant iOS. Use when building views, choosing SwiftUI vs UIKit, bridging with embeddedInHostingController(), building reusable components in the HADesignSystem package, or following the one-struct-per-file, inline-body, and #Preview rules.
The WKWebView frontend that renders the Home Assistant web UI. Use when working on WebViewController and its WebViewController+*.swift extensions, the JavaScript external message bus, custom URL schemes, or deep links into the frontend.
The end-to-end change workflow and CI gates. Use when preparing a change for commit, understanding the order of lint/autocorrect/test steps, or knowing what GitHub Actions checks before a PR can merge.