Inform iOS about AppShortcutsProvider

I've been following along with "App Shortcuts" development but cannot get Siri to run my Intent. The intent on its own works in Shortcuts, along with a couple others that aren't in the AppShortcutsProvder structure.

I keep getting the following two errors, but cannot figure out why this is occurring with documentation or other forum posts.

No ConnectionContext found for 12909953344

Attempted to fetch App Shortcuts, but couldn't find the AppShortcutsProvider.

Here are the relevant snippets of code -

(1) The AppIntent definition

struct SetBrightnessIntent: AppIntent {
    static var title = LocalizedStringResource("Set Brightness")
    static var description = IntentDescription("Set Glass Display Brightness")
    

    @Parameter(title: "Level")
    var level: Int?

    static var parameterSummary: some ParameterSummary {
        Summary("Set Brightness to \(\.$level)%")
    }

    func perform() async throws -> some IntentResult {
        guard let level = level else {
            throw $level.needsValueError("Please provide a brightness value")
        }
        
        if level > 100 || level <= 0 {
            throw $level.needsValueError("Brightness must be between 1 and 100")
        }
        
        // do stuff with level
        return .result()
    }
}

(2) The AppShortcutsProvider (defined in my iOS app target, there are no other targets)

struct MyAppShortcuts: AppShortcutsProvider {
    static var shortcutTileColor: ShortcutTileColor = .grayBlue
    
    @AppShortcutsBuilder
    static var appShortcuts: [AppShortcut] {
        AppShortcut(
            intent: SetBrightnessIntent(),
            phrases: [
                "set \(.applicationName) brightness to \(\.$level)",
                "set \(.applicationName) brightness to \(\.$level) percent"
            ],
            shortTitle: LocalizedStringResource("Set Glass Brightness"),
            systemImageName: "sun.max"
        )
    }
}

Does anything here look wrong? Is there some magical key that I need to specify in Info.plist to get Siri to recognize the AppShortcutsProvider?

On Xcode 16.2 and iOS 18.2 (non-beta).