Sources/Shotdeck/AppModel.swift

@@ -35,6 +35,11 @@ public final class AppModel {
     /// Live transport choice; WP-onedrive reads this to pick the send path and to drive
     /// the Settings "Send via" picker and the menu's "Send…" label.
     public private(set) var transport: SendTransport
+    /// Ground truth for the Settings OneDrive row: nil means "no OneDrive folder found".
+    /// Views read this instead of calling `OneDriveLocator.resolveOneDriveFolder()`
+    /// directly, so state (and testing with a fake home) flows through the model like
+    /// everything else — never a View reaching past the model for real UserDefaults/home.
+    public private(set) var resolvedOneDriveFolder: URL?
     /// Live outbox; WP-4b reads this (not `paths.outbox`) so Settings folder changes take effect.
     public private(set) var outboxURL: URL
     /// Live watch folder; WP-4c updates this alongside `ReturnWatcher.updateWatchFolder`.
@@ -93,6 +98,7 @@ public final class AppModel {
         self.outboxDisplayName = folders.outbox.lastPathComponent
         self.watchFolderDisplayName = folders.watch.lastPathComponent
         self.transport = folders.transport
+        self.resolvedOneDriveFolder = OneDriveLocator.resolveOneDriveFolder()
         self.captureHotkey = HotkeyPreference.load()
         self.updateChecker = UpdateChecker()
         self.updateChecker.onChecked = { [weak self] in
@@ -125,6 +131,7 @@ public final class AppModel {
         setFolderDisplayNames(outbox: outbox.lastPathComponent, watch: watch.lastPathComponent)
     }
     func setTransport(_ value: SendTransport) { transport = value }
+    func setResolvedOneDriveFolder(_ value: URL?) { resolvedOneDriveFolder = value }
     func rememberLastComposedPDF(_ url: URL) { lastComposedPDFURL = url }
 
     /// True when a last-composed PDF path is known this run, or the newest
@@ -200,6 +207,7 @@ public final class AppModel {
         if transport == .oneDrive {
             try? FileManager.default.createDirectory(at: outboxURL, withIntermediateDirectories: true)
         }
+        setResolvedOneDriveFolder(OneDriveLocator.resolveOneDriveFolder())
         await watcher.setRecordUncommented(transport == .airDrop)
 
         do {

Sources/Shotdeck/PanelSnapshot.swift

@@ -61,6 +61,28 @@ enum PanelSnapshot {
         try renderMenuBar(model: model, to: directory, name: "03-empty-session")
 
         // 04 — three real PNGs in the temp spool so SessionStrip thumbnails decode.
+        try await addSampleCaptures(to: model)
+        try renderMenuBar(model: model, to: directory, name: "04-captures-present")
+
+        // 05 — two inspected PDFs in the temp ledger, one marked / one not.
+        try await seedReturns(model: model)
+        try renderMenuBar(model: model, to: directory, name: "05-returns-present")
+
+        // 06 — SettingsView against the same isolated model.
+        try render(
+            SettingsView().environment(model),
+            to: directory.appendingPathComponent("panel-06-settings.png")
+        )
+
+        // 07/08/09 — OneDrive-mode Settings + menu bar, on a SEPARATE isolated model so
+        // this transport switch never bleeds into the AirDrop-mode panels above.
+        try await captureOneDrivePanels(to: directory)
+    }
+
+    /// Three real PNGs appended to the given model's temp spool so SessionStrip
+    /// thumbnails decode. Shared by panel 04 (AirDrop) and panel 09 (OneDrive).
+    @MainActor
+    private static func addSampleCaptures(to model: AppModel) async throws {
         let swatches: [(CGFloat, CGFloat, CGFloat)] = [
             (0.85, 0.22, 0.18),
             (0.18, 0.62, 0.32),
@@ -77,17 +99,62 @@ enum PanelSnapshot {
             )
         }
         model.replaceSession(try await model.spool.currentSession())
-        try renderMenuBar(model: model, to: directory, name: "04-captures-present")
+    }
 
-        // 05 — two inspected PDFs in the temp ledger, one marked / one not.
-        try await seedReturns(model: model)
-        try renderMenuBar(model: model, to: directory, name: "05-returns-present")
+    /// Panels 07-09: OneDrive transport, on its own isolated model/temp root so
+    /// switching transport here never touches the AirDrop-mode model above, the real
+    /// home directory, or UserDefaults.standard. The "resolved" and "not found" states
+    /// are produced by calling the real OneDriveLocator functions against fake home
+    /// trees built under this snapshot's own temp root — never a hand-typed path.
+    @MainActor
+    private static func captureOneDrivePanels(to directory: URL) async throws {
+        let (model, root) = try makeIsolatedModel()
+        defer { try? FileManager.default.removeItem(at: root) }
+        model.setTransport(.oneDrive)
 
-        // 06 — SettingsView against the same isolated model.
+        // 07 — a resolved OneDrive folder, shaped like the real default
+        // (…/Library/CloudStorage/OneDrive-MMDGROUP/Redline): a fake home tree with a
+        // real OneDrive-MMDGROUP directory under it, resolved via the same pure
+        // OneDriveLocator function production code uses — never a hand-typed path.
+        let fakeHomeWithOneDrive = root.appendingPathComponent("fake-home-with-onedrive", isDirectory: true)
+        let syncRoot = fakeHomeWithOneDrive
+            .appendingPathComponent("Library/CloudStorage/OneDrive-MMDGROUP", isDirectory: true)
+        try FileManager.default.createDirectory(at: syncRoot, withIntermediateDirectories: true)
+        guard let resolvedFolder = OneDriveLocator.defaultRedlineFolder(
+            home: fakeHomeWithOneDrive, fileManager: .default
+        ) else {
+            throw SnapshotError.oneDriveFixtureFailed("fake OneDrive-MMDGROUP root did not resolve")
+        }
+        model.setResolvedOneDriveFolder(resolvedFolder)
         try render(
             SettingsView().environment(model),
-            to: directory.appendingPathComponent("panel-06-settings.png")
+            to: directory.appendingPathComponent("panel-07-settings-onedrive.png")
         )
+
+        // 08 — no OneDrive folder found: a fake home with NO Library/CloudStorage at
+        // all, and a throwaway UserDefaults suite (never .standard, never touched
+        // before) so the stored-override check also legitimately finds nothing.
+        let fakeHomeWithoutOneDrive = root.appendingPathComponent("fake-home-without-onedrive", isDirectory: true)
+        try FileManager.default.createDirectory(at: fakeHomeWithoutOneDrive, withIntermediateDirectories: true)
+        let isolatedDefaults = try makeIsolatedDefaultsSuite()
+        defer { isolatedDefaults.defaults.removePersistentDomain(forName: isolatedDefaults.suiteName) }
+        let missingFolder = OneDriveLocator.resolveOneDriveFolder(
+            defaults: isolatedDefaults.defaults, home: fakeHomeWithoutOneDrive, fileManager: .default
+        )
+        guard missingFolder == nil else {
+            throw SnapshotError.oneDriveFixtureFailed("fake home without OneDrive unexpectedly resolved")
+        }
+        model.setResolvedOneDriveFolder(nil)
+        try render(
+            SettingsView().environment(model),
+            to: directory.appendingPathComponent("panel-08-settings-onedrive-missing.png")
+        )
+
+        // 09 — menu bar panel, 3 captures present, OneDrive mode ("Send to OneDrive").
+        model.snapshotSetScreenRecordingGranted(true)
+        model.replaceRegion(sampleRegion())
+        try await addSampleCaptures(to: model)
+        try renderMenuBar(model: model, to: directory, name: "09-captures-present-onedrive")
     }
 
     @MainActor
@@ -177,6 +244,23 @@ enum PanelSnapshot {
         return (model, root)
     }
 
+    /// A throwaway UserDefaults suite — never `.standard` — for the panel-08 fixture,
+    /// the same isolation pattern ShotdeckCoreTests uses for TransportSettings/
+    /// OneDriveLocator tests.
+    private struct IsolatedDefaultsSuite {
+        let suiteName: String
+        let defaults: UserDefaults
+    }
+
+    private static func makeIsolatedDefaultsSuite() throws -> IsolatedDefaultsSuite {
+        let suiteName = "shotdeck-panel-snapshot-\(UUID().uuidString)"
+        guard let defaults = UserDefaults(suiteName: suiteName) else {
+            throw SnapshotError.oneDriveFixtureFailed("could not create isolated UserDefaults suite")
+        }
+        defaults.removePersistentDomain(forName: suiteName)
+        return IsolatedDefaultsSuite(suiteName: suiteName, defaults: defaults)
+    }
+
     @MainActor
     private static func seedReturns(model: AppModel) async throws {
         let watch = model.paths.watchFolder
@@ -283,6 +367,7 @@ private enum SnapshotError: Error, CustomStringConvertible {
     case encodeFailed(String)
     case pngGenerationFailed
     case pdfWriteFailed(String)
+    case oneDriveFixtureFailed(String)
 
     var description: String {
         switch self {
@@ -290,6 +375,7 @@ private enum SnapshotError: Error, CustomStringConvertible {
         case .encodeFailed(let name): return "PNG encode failed for \(name)"
         case .pngGenerationFailed: return "CoreGraphics PNG generation failed"
         case .pdfWriteFailed(let name): return "could not write \(name)"
+        case .oneDriveFixtureFailed(let detail): return "OneDrive snapshot fixture failed: \(detail)"
         }
     }
 }

Sources/Shotdeck/SendController.swift

@@ -31,10 +31,12 @@ extension AppModel: SendCapable {
                 let path = OneDriveLocator.resolveOneDriveFolder()?.path
                     ?? TransportSettings.storedOneDriveFolderPath()
                     ?? "no OneDrive folder found"
+                setResolvedOneDriveFolder(nil)
                 setStatus(ShotdeckError.oneDriveFolderUnavailable(path: path).errorDescription)
                 setSending(false)
                 return
             }
+            setResolvedOneDriveFolder(folder)
             if outboxURL != folder || watchFolderURL != folder {
                 setFolderURLs(outbox: folder, watch: folder)
                 try? await watcher.updateWatchFolder(folder)

Sources/Shotdeck/SettingsView.swift

@@ -77,7 +77,7 @@ struct SettingsView: View {
             } else {
                 GridRow(alignment: .center) {
                     fieldLabel("OneDrive folder")
-                    if let folder = resolvedOneDriveFolder {
+                    if let folder = model.resolvedOneDriveFolder {
                         folderValue(path: folder.path) {
                             model.chooseOneDriveFolder()
                         }
@@ -122,13 +122,6 @@ struct SettingsView: View {
         Binding(get: { model.transport }, set: { model.chooseTransport($0) })
     }
 
-    /// Ground truth from OneDriveLocator, not `model.outboxURL` — the model may be
-    /// showing an AirDrop-folder fallback when no real OneDrive folder resolves, and
-    /// the Settings row must say so plainly rather than repeat that fallback path.
-    private var resolvedOneDriveFolder: URL? {
-        OneDriveLocator.resolveOneDriveFolder()
-    }
-
     private func armHotkeyRecorder() {
         guard !isRecordingHotkey else { return }
         isRecordingHotkey = true
@@ -267,6 +260,7 @@ extension AppModel: SettingsWindowPresenting {
             )
         }
         setFolderURLs(outbox: folders.outbox, watch: folders.watch)
+        setResolvedOneDriveFolder(OneDriveLocator.resolveOneDriveFolder())
         Task {
             await watcher.setRecordUncommented(value == .airDrop)
             do {
@@ -280,10 +274,11 @@ extension AppModel: SettingsWindowPresenting {
     }
 
     func chooseOneDriveFolder() {
-        let start = OneDriveLocator.resolveOneDriveFolder() ?? FileManager.default.homeDirectoryForCurrentUser
+        let start = resolvedOneDriveFolder ?? FileManager.default.homeDirectoryForCurrentUser
         guard let url = chooseDirectory(startingAt: start) else { return }
         TransportSettings.setOneDriveFolder(url)
         try? FileManager.default.createDirectory(at: url, withIntermediateDirectories: true)
+        setResolvedOneDriveFolder(OneDriveLocator.resolveOneDriveFolder())
         guard transport == .oneDrive else { return }
         setFolderURLs(outbox: url, watch: url)
         Task {