Give every generated Swift model a public init, and build a consumer that would have caught it

swift/Package.swift

@@ -18,6 +18,20 @@ let package = Package(
                 .swiftLanguageMode(.v6),
             ]
         ),
+        // Models a customer: depends on the `Basecamp` target and imports it
+        // plainly, so only the public surface is visible (#735). Deliberately a
+        // non-test target — `swift build` compiles it, which is broader cover
+        // than `swift test`, and it is deliberately absent from `products` so it
+        // is never built by a package that depends on this one. Its sources must
+        // never use `@testable`; PublicInitCoverageTests enforces both properties.
+        .target(
+            name: "BasecampPublicAPIConsumer",
+            dependencies: ["Basecamp"],
+            path: "Sources/BasecampPublicAPIConsumer",
+            swiftSettings: [
+                .swiftLanguageMode(.v6),
+            ]
+        ),
         .executableTarget(
             name: "BasecampGenerator",
             path: "Sources/BasecampGenerator",

swift/Sources/Basecamp/Generated/Models/AccountLimits.swift

@@ -6,4 +6,16 @@ public struct AccountLimits: Codable, Sendable {
     public var canCreateUsers: Bool?
     public var canPinProjects: Bool?
     public var canUploadFiles: Bool?
+
+    public init(
+        canCreateProjects: Bool? = nil,
+        canCreateUsers: Bool? = nil,
+        canPinProjects: Bool? = nil,
+        canUploadFiles: Bool? = nil
+    ) {
+        self.canCreateProjects = canCreateProjects
+        self.canCreateUsers = canCreateUsers
+        self.canPinProjects = canPinProjects
+        self.canUploadFiles = canUploadFiles
+    }
 }

swift/Sources/Basecamp/Generated/Models/AccountLogo.swift

@@ -3,4 +3,8 @@ import Foundation
 
 public struct AccountLogo: Codable, Sendable {
     public var url: String?
+
+    public init(url: String? = nil) {
+        self.url = url
+    }
 }

swift/Sources/Basecamp/Generated/Models/AccountSettings.swift

@@ -5,4 +5,10 @@ public struct AccountSettings: Codable, Sendable {
     public var companyHqEnabled: Bool?
     public var projectsEnabled: Bool?
     public var teamsEnabled: Bool?
+
+    public init(companyHqEnabled: Bool? = nil, projectsEnabled: Bool? = nil, teamsEnabled: Bool? = nil) {
+        self.companyHqEnabled = companyHqEnabled
+        self.projectsEnabled = projectsEnabled
+        self.teamsEnabled = teamsEnabled
+    }
 }

swift/Sources/Basecamp/Generated/Models/AccountSubscription.swift

@@ -10,4 +10,24 @@ public struct AccountSubscription: Codable, Sendable {
     public var teams: Bool?
     public var templates: Bool?
     public var timesheet: Bool?
+
+    public init(
+        clients: Bool? = nil,
+        logo: Bool? = nil,
+        projectLimit: Int32? = nil,
+        properName: String? = nil,
+        shortName: String? = nil,
+        teams: Bool? = nil,
+        templates: Bool? = nil,
+        timesheet: Bool? = nil
+    ) {
+        self.clients = clients
+        self.logo = logo
+        self.projectLimit = projectLimit
+        self.properName = properName
+        self.shortName = shortName
+        self.teams = teams
+        self.templates = templates
+        self.timesheet = timesheet
+    }
 }

swift/Sources/Basecamp/Generated/Models/CampfireLineAttachment.swift

@@ -8,4 +8,20 @@ public struct CampfireLineAttachment: Codable, Sendable {
     public var filename: String?
     public var title: String?
     public var url: String?
+
+    public init(
+        byteSize: Int? = nil,
+        contentType: String? = nil,
+        downloadUrl: String? = nil,
+        filename: String? = nil,
+        title: String? = nil,
+        url: String? = nil
+    ) {
+        self.byteSize = byteSize
+        self.contentType = contentType
+        self.downloadUrl = downloadUrl
+        self.filename = filename
+        self.title = title
+        self.url = url
+    }
 }

swift/Sources/Basecamp/Generated/Models/ClientApprovalResponse.swift

@@ -17,4 +17,38 @@ public struct ClientApprovalResponse: Codable, Sendable {
     public var type: String?
     public var updatedAt: String?
     public var visibleToClients: Bool?
+
+    public init(
+        appUrl: String? = nil,
+        approved: Bool? = nil,
+        bookmarkUrl: String? = nil,
+        bucket: RecordingBucket? = nil,
+        content: String? = nil,
+        createdAt: String? = nil,
+        creator: Person? = nil,
+        id: Int? = nil,
+        inheritsStatus: Bool? = nil,
+        parent: RecordingParent? = nil,
+        status: String? = nil,
+        title: String? = nil,
+        type: String? = nil,
+        updatedAt: String? = nil,
+        visibleToClients: Bool? = nil
+    ) {
+        self.appUrl = appUrl
+        self.approved = approved
+        self.bookmarkUrl = bookmarkUrl
+        self.bucket = bucket
+        self.content = content
+        self.createdAt = createdAt
+        self.creator = creator
+        self.id = id
+        self.inheritsStatus = inheritsStatus
+        self.parent = parent
+        self.status = status
+        self.title = title
+        self.type = type
+        self.updatedAt = updatedAt
+        self.visibleToClients = visibleToClients
+    }
 }

swift/Sources/Basecamp/Generated/Models/ClientSide.swift

@@ -5,4 +5,9 @@ import Foundation
 public struct ClientSide: Codable, Sendable {
     public var appUrl: String?
     public var url: String?
+
+    public init(appUrl: String? = nil, url: String? = nil) {
+        self.appUrl = appUrl
+        self.url = url
+    }
 }

swift/Sources/Basecamp/Generated/Models/CreateAttachmentResponseContent.swift

@@ -3,4 +3,8 @@ import Foundation
 
 public struct CreateAttachmentResponseContent: Codable, Sendable {
     public var attachableSgid: String?
+
+    public init(attachableSgid: String? = nil) {
+        self.attachableSgid = attachableSgid
+    }
 }

swift/Sources/Basecamp/Generated/Models/DoorService.swift

@@ -7,4 +7,18 @@ public struct DoorService: Codable, Sendable {
     public var name: String?
     public var supportingText: String?
     public var validPatterns: [String]?
+
+    public init(
+        code: String? = nil,
+        exampleUrl: String? = nil,
+        name: String? = nil,
+        supportingText: String? = nil,
+        validPatterns: [String]? = nil
+    ) {
+        self.code = code
+        self.exampleUrl = exampleUrl
+        self.name = name
+        self.supportingText = supportingText
+        self.validPatterns = validPatterns
+    }
 }

swift/Sources/Basecamp/Generated/Models/EventDetails.swift

@@ -5,4 +5,10 @@ public struct EventDetails: Codable, Sendable {
     public var addedPersonIds: [Int]?
     public var notifiedRecipientIds: [Int]?
     public var removedPersonIds: [Int]?
+
+    public init(addedPersonIds: [Int]? = nil, notifiedRecipientIds: [Int]? = nil, removedPersonIds: [Int]? = nil) {
+        self.addedPersonIds = addedPersonIds
+        self.notifiedRecipientIds = notifiedRecipientIds
+        self.removedPersonIds = removedPersonIds
+    }
 }

swift/Sources/Basecamp/Generated/Models/EverythingFile.swift

@@ -34,4 +34,72 @@ public struct EverythingFile: Codable, Sendable {
     public var url: String?
     public var visibleToClients: Bool?
     public var width: Int32?
+
+    public init(
+        appDownloadUrl: String? = nil,
+        appUrl: String? = nil,
+        attachableSgid: String? = nil,
+        bookmarkUrl: String? = nil,
+        boostsCount: Int32? = nil,
+        boostsUrl: String? = nil,
+        bucket: RecordingBucket? = nil,
+        byteSize: Int? = nil,
+        commentsCount: Int32? = nil,
+        commentsUrl: String? = nil,
+        content: String? = nil,
+        contentAttachments: [RichTextAttachment]? = nil,
+        contentType: String? = nil,
+        createdAt: String? = nil,
+        creator: Person? = nil,
+        description: String? = nil,
+        descriptionAttachments: [RichTextAttachment]? = nil,
+        downloadUrl: String? = nil,
+        filename: String? = nil,
+        height: Int32? = nil,
+        id: Int? = nil,
+        inheritsStatus: Bool? = nil,
+        parent: RecordingParent? = nil,
+        position: Int32? = nil,
+        status: String? = nil,
+        subscriptionUrl: String? = nil,
+        title: String? = nil,
+        type: String? = nil,
+        updatedAt: String? = nil,
+        url: String? = nil,
+        visibleToClients: Bool? = nil,
+        width: Int32? = nil
+    ) {
+        self.appDownloadUrl = appDownloadUrl
+        self.appUrl = appUrl
+        self.attachableSgid = attachableSgid
+        self.bookmarkUrl = bookmarkUrl
+        self.boostsCount = boostsCount
+        self.boostsUrl = boostsUrl
+        self.bucket = bucket
+        self.byteSize = byteSize
+        self.commentsCount = commentsCount
+        self.commentsUrl = commentsUrl
+        self.content = content
+        self.contentAttachments = contentAttachments
+        self.contentType = contentType
+        self.createdAt = createdAt
+        self.creator = creator
+        self.description = description
+        self.descriptionAttachments = descriptionAttachments
+        self.downloadUrl = downloadUrl
+        self.filename = filename
+        self.height = height
+        self.id = id
+        self.inheritsStatus = inheritsStatus
+        self.parent = parent
+        self.position = position
+        self.status = status
+        self.subscriptionUrl = subscriptionUrl
+        self.title = title
+        self.type = type
+        self.updatedAt = updatedAt
+        self.url = url
+        self.visibleToClients = visibleToClients
+        self.width = width
+    }
 }

swift/Sources/Basecamp/Generated/Models/GaugeNeedleUpdatePayload.swift

@@ -3,4 +3,8 @@ import Foundation
 
 public struct GaugeNeedleUpdatePayload: Codable, Sendable {
     public var description: String?
+
+    public init(description: String? = nil) {
+        self.description = description
+    }
 }

swift/Sources/Basecamp/Generated/Models/GetAssignedTodosResponseContent.swift

@@ -5,4 +5,10 @@ public struct GetAssignedTodosResponseContent: Codable, Sendable {
     public var groupedBy: String?
     public var person: Person?
     public var todos: [Todo]?
+
+    public init(groupedBy: String? = nil, person: Person? = nil, todos: [Todo]? = nil) {
+        self.groupedBy = groupedBy
+        self.person = person
+        self.todos = todos
+    }
 }

swift/Sources/Basecamp/Generated/Models/GetMyAssignmentsResponseContent.swift

@@ -4,4 +4,9 @@ import Foundation
 public struct GetMyAssignmentsResponseContent: Codable, Sendable {
     public var nonPriorities: [MyAssignment]?
     public var priorities: [MyAssignment]?
+
+    public init(nonPriorities: [MyAssignment]? = nil, priorities: [MyAssignment]? = nil) {
+        self.nonPriorities = nonPriorities
+        self.priorities = priorities
+    }
 }

swift/Sources/Basecamp/Generated/Models/GetOverdueTodosResponseContent.swift

@@ -6,4 +6,16 @@ public struct GetOverdueTodosResponseContent: Codable, Sendable {
     public var overAWeekLate: [Todo]?
     public var overThreeMonthsLate: [Todo]?
     public var underAWeekLate: [Todo]?
+
+    public init(
+        overAMonthLate: [Todo]? = nil,
+        overAWeekLate: [Todo]? = nil,
+        overThreeMonthsLate: [Todo]? = nil,
+        underAWeekLate: [Todo]? = nil
+    ) {
+        self.overAMonthLate = overAMonthLate
+        self.overAWeekLate = overAWeekLate
+        self.overThreeMonthsLate = overThreeMonthsLate
+        self.underAWeekLate = underAWeekLate
+    }
 }

swift/Sources/Basecamp/Generated/Models/GetPersonProgressResponseContent.swift

@@ -4,4 +4,9 @@ import Foundation
 public struct GetPersonProgressResponseContent: Codable, Sendable {
     public var events: [TimelineEvent]?
     public var person: Person?
+
+    public init(events: [TimelineEvent]? = nil, person: Person? = nil) {
+        self.events = events
+        self.person = person
+    }
 }

swift/Sources/Basecamp/Generated/Models/OutOfOffice.swift

@@ -8,4 +8,20 @@ public struct OutOfOffice: Codable, Sendable {
     public var ongoing: Bool?
     public var person: OutOfOfficePerson?
     public var startDate: String?
+
+    public init(
+        backOnDate: String? = nil,
+        enabled: Bool? = nil,
+        endDate: String? = nil,
+        ongoing: Bool? = nil,
+        person: OutOfOfficePerson? = nil,
+        startDate: String? = nil
+    ) {
+        self.backOnDate = backOnDate
+        self.enabled = enabled
+        self.endDate = endDate
+        self.ongoing = ongoing
+        self.person = person
+        self.startDate = startDate
+    }
 }

swift/Sources/Basecamp/Generated/Models/PauseQuestionResponseContent.swift

@@ -3,4 +3,8 @@ import Foundation
 
 public struct PauseQuestionResponseContent: Codable, Sendable {
     public var paused: Bool?
+
+    public init(paused: Bool? = nil) {
+        self.paused = paused
+    }
 }

swift/Sources/Basecamp/Generated/Models/Preferences.swift

@@ -7,4 +7,18 @@ public struct Preferences: Codable, Sendable {
     public var timeFormat: String?
     public var timeZoneName: String?
     public var url: String?
+
+    public init(
+        appUrl: String? = nil,
+        firstWeekDay: String? = nil,
+        timeFormat: String? = nil,
+        timeZoneName: String? = nil,
+        url: String? = nil
+    ) {
+        self.appUrl = appUrl
+        self.firstWeekDay = firstWeekDay
+        self.timeFormat = timeFormat
+        self.timeZoneName = timeZoneName
+        self.url = url
+    }
 }

swift/Sources/Basecamp/Generated/Models/PreferencesPayload.swift

@@ -5,4 +5,10 @@ public struct PreferencesPayload: Codable, Sendable {
     public var firstWeekDay: String?
     public var timeFormat: String?
     public var timeZoneName: String?
+
+    public init(firstWeekDay: String? = nil, timeFormat: String? = nil, timeZoneName: String? = nil) {
+        self.firstWeekDay = firstWeekDay
+        self.timeFormat = timeFormat
+        self.timeZoneName = timeZoneName
+    }
 }