Sources/Shotdeck/AppModel.swift

@@ -36,6 +36,8 @@ public final class AppModel {
     public private(set) var outboxURL: URL
     /// Live watch folder; WP-4c updates this alongside `ReturnWatcher.updateWatchFolder`.
     public private(set) var watchFolderURL: URL
+    /// Absolute URL of the PDF composed this run, if any. Used by "Reveal last PDF".
+    public private(set) var lastComposedPDFURL: URL?
     /// Currently bound capture combo (the last one Carbon accepted, or the preferred load).
     private(set) var captureHotkey: HotkeyPreference
     var hotkeyDisplayString: String { captureHotkey.displayString }
@@ -116,6 +118,42 @@ public final class AppModel {
         watchFolderURL = watch
         setFolderDisplayNames(outbox: outbox.lastPathComponent, watch: watch.lastPathComponent)
     }
+    func rememberLastComposedPDF(_ url: URL) { lastComposedPDFURL = url }
+
+    /// True when a last-composed PDF path is known this run, or the newest
+    /// `Redline-*.pdf` in the outbox exists on disk.
+    var canRevealLastPDF: Bool { revealablePDFURL() != nil }
+
+    public func revealLastPDF() {
+        guard let url = revealablePDFURL() else { return }
+        NSWorkspace.shared.activateFileViewerSelecting([url])
+    }
+
+    func revealablePDFURL() -> URL? {
+        if let last = lastComposedPDFURL, FileManager.default.fileExists(atPath: last.path) {
+            return last
+        }
+        return newestOutboxRedlinePDF()
+    }
+
+    func newestOutboxRedlinePDF() -> URL? {
+        let fm = FileManager.default
+        let items = (try? fm.contentsOfDirectory(
+            at: outboxURL,
+            includingPropertiesForKeys: [.contentModificationDateKey],
+            options: [.skipsHiddenFiles]
+        )) ?? []
+        let matches = items.filter {
+            $0.lastPathComponent.hasPrefix("Redline-") && $0.pathExtension.lowercased() == "pdf"
+        }
+        return matches.max { a, b in
+            let da = (try? a.resourceValues(forKeys: [.contentModificationDateKey])
+                .contentModificationDate) ?? .distantPast
+            let db = (try? b.resourceValues(forKeys: [.contentModificationDateKey])
+                .contentModificationDate) ?? .distantPast
+            return da < db
+        }
+    }
 
     public var iconState: MenuIconState {
         if !screenRecordingGranted { return .recordingMissing }

Sources/Shotdeck/MenuBarView.swift

@@ -95,6 +95,13 @@ struct MenuBarView: View {
             }
             .disabled(model.session.isEmpty || model.isSending)
 
+            Button {
+                model.revealLastPDF()
+            } label: {
+                actionLabel("Reveal last PDF")
+            }
+            .disabled(!model.canRevealLastPDF)
+
             Button {
                 Task { await model.captureNow() }
             } label: {

Sources/Shotdeck/PickerSelfTest.swift

@@ -1,6 +1,8 @@
 import AppKit
+import CoreGraphics
 import Darwin
 import Foundation
+import ImageIO
 import ShotdeckCore
 
 /// In-process self-test for the region picker, driven by `SHOTDECK_PICKER_SELFTEST`.
@@ -113,10 +115,10 @@ enum PickerSelfTest {
         fflush(stdout)
 
         runRegionPersistPhase()
-        if !startUpdateSelfTestIfRequested() {
+        // Hop off this MainActor job so the SEND-TRUTH Task can run; do not
-            exit(0)
+        // exit(0) here — runSendTruthPhase prints its own PASS/FAIL, then
-        }
+        // chains to UPDATE-SELFTEST (or exits if that phase is not requested).
-        // UPDATE-SELFTEST hops to a later main-actor turn and exits itself.
+        runSendTruthPhase()
     }
 
     /// Phase 2: writes a known region under `CaptureRegion.defaultsKey`, reloads it through
@@ -160,7 +162,145 @@ enum PickerSelfTest {
         fflush(stdout)
     }
 
-    /// Phase 3: builds a fake 99.0.0 bundle, serves a local appcast, stages via
+    /// Phase 3: drive SendController's share-outcome seams with no AirDrop sheet.
+    /// Fail path must leave the session open in the temp spool; success path archives
+    /// and mints a fresh empty session. Scheduled as a new MainActor job because this
+    /// function is called from inside `execute()` — a nested run-loop wait would never
+    /// let the Task start. On success, chains to UPDATE-SELFTEST instead of exiting.
+    private static func runSendTruthPhase() {
+        Task { @MainActor in
+            do {
+                try await executeSendTruth()
+                print("SEND-TRUTH PASS")
+                fflush(stdout)
+                if !startUpdateSelfTestIfRequested() {
+                    exit(0)
+                }
+            } catch {
+                print("SEND-TRUTH FAIL \(error)")
+                fflush(stdout)
+                exit(1)
+            }
+        }
+    }
+
+    private static func executeSendTruth() async throws {
+        let fm = FileManager.default
+        let root = fm.temporaryDirectory
+            .appendingPathComponent("shotdeck-send-truth-\(UUID().uuidString)", isDirectory: true)
+        defer { try? fm.removeItem(at: root) }
+
+        let paths = try AppSupportPaths(
+            root: root,
+            outbox: root.appendingPathComponent("outbox", isDirectory: true),
+            watchFolder: root.appendingPathComponent("watch", isDirectory: true)
+        )
+        let ledger = try ReturnLedger(paths: paths)
+        let model = AppModel(
+            paths: paths,
+            spool: try SpoolStore(paths: paths),
+            composer: PDFComposer(),
+            capturer: ScreenCapturer(),
+            hotkeys: HotkeyCenter(),
+            picker: RegionPickerController(),
+            ledger: ledger,
+            watcher: ReturnWatcher(paths: paths, ledger: ledger)
+        )
+        model.setFolderURLs(outbox: paths.outbox, watch: paths.watchFolder)
+
+        let png = try makeTinyPNGData()
+        _ = try await model.spool.append(
+            pngData: png,
+            pixelWidth: 64,
+            pixelHeight: 48,
+            scale: 1,
+            capturedAt: Date()
+        )
+        model.replaceSession(try await model.spool.currentSession())
+        let openID = model.session.id
+        guard !model.session.isEmpty else {
+            sendTruthFail("seeded session was empty")
+        }
+
+        let pending = try await model.composePDFForSend()
+        guard fm.fileExists(atPath: pending.fileURL.path) else {
+            sendTruthFail("PDF was not written")
+        }
+
+        model.handleDidFailToShareItems(fileName: pending.fileName)
+        let still = try await model.spool.currentSession()
+        guard still.id == openID, !still.isEmpty, still.state == .open else {
+            sendTruthFail("fail path archived or replaced the session")
+        }
+        let spoolDir = paths.sessionDirectory(openID)
+        guard fm.fileExists(atPath: spoolDir.path) else {
+            sendTruthFail("fail path: session missing from temp spool")
+        }
+        guard let status = model.statusLine, status.contains("nothing was sent") else {
+            sendTruthFail("fail path status missing 'nothing was sent': \(model.statusLine ?? "nil")")
+        }
+
+        await model.handleDidShareItems(fileName: pending.fileName, pageCount: pending.pageCount)
+        let fresh = try await model.spool.currentSession()
+        guard fresh.isEmpty, fresh.id != openID, fresh.state == .open else {
+            sendTruthFail("success path did not mint a fresh empty session")
+        }
+        let archived = try await model.spool.archivedSessions()
+        guard archived.contains(where: { $0.id == openID && $0.state == .archived }) else {
+            sendTruthFail("success path did not archive the session")
+        }
+        let archiveDir = paths.archiveDirectory(openID)
+        guard fm.fileExists(atPath: archiveDir.path) else {
+            sendTruthFail("success path: archive dir missing")
+        }
+        guard !fm.fileExists(atPath: spoolDir.path) else {
+            sendTruthFail("success path: session still in spool")
+        }
+    }
+
+    private static func makeTinyPNGData() throws -> Data {
+        let width = 64
+        let height = 48
+        let colorSpace = CGColorSpaceCreateDeviceRGB()
+        guard let context = CGContext(
+            data: nil,
+            width: width,
+            height: height,
+            bitsPerComponent: 8,
+            bytesPerRow: width * 4,
+            space: colorSpace,
+            bitmapInfo: CGImageAlphaInfo.premultipliedLast.rawValue
+        ) else {
+            sendTruthFail("could not create PNG context")
+        }
+        context.setFillColor(red: 0.2, green: 0.4, blue: 0.8, alpha: 1)
+        context.fill(CGRect(x: 0, y: 0, width: width, height: height))
+        guard let image = context.makeImage() else {
+            sendTruthFail("could not make CGImage")
+        }
+        let buffer = NSMutableData()
+        guard let destination = CGImageDestinationCreateWithData(
+            buffer,
+            "public.png" as CFString,
+            1,
+            nil
+        ) else {
+            sendTruthFail("could not create PNG destination")
+        }
+        CGImageDestinationAddImage(destination, image, nil)
+        guard CGImageDestinationFinalize(destination) else {
+            sendTruthFail("could not finalize PNG")
+        }
+        return buffer as Data
+    }
+
+    private static func sendTruthFail(_ reason: String) -> Never {
+        print("SEND-TRUTH FAIL \(reason)")
+        fflush(stdout)
+        exit(1)
+    }
+
+    /// Phase 4: builds a fake 99.0.0 bundle, serves a local appcast, stages via
     /// `checkNow`, then `installStaged` into the env dir — never `/Applications`.
     /// Returns true when the async phase was scheduled (it calls `exit` itself).
     @discardableResult

Sources/Shotdeck/SendController.swift

@@ -3,12 +3,59 @@ import Darwin
 import Foundation
 import ShotdeckCore
 
+/// Result of composing a send PDF. Kept so the self-test can drive the share
+/// outcome without presenting a real AirDrop sheet.
+struct ComposedSend: Sendable {
+    let fileName: String
+    let fileURL: URL
+    let pageCount: Int
+}
+
 extension AppModel: SendCapable {
     public func send(anchor: NSView?) async {
         guard !session.isEmpty, !isSending else { return }
         setSending(true)
-        defer { setSending(false) }
 
+        let pending: ComposedSend
+        do {
+            pending = try await composePDFForSend()
+        } catch {
+            // Never unlink the published PDF, and never unlink the temp file either:
+            // a rename failure would leave the complete document at the temp name.
+            setStatus((error as? ShotdeckError)?.errorDescription ?? "The PDF could not be built.")
+            setSending(false)
+            return
+        }
+
+        guard let anchor else {
+            handleDidFailToShareItems(fileName: pending.fileName)
+            setSending(false)
+            return
+        }
+
+        do {
+            try Sharing.airDrop(fileURL: pending.fileURL, from: anchor) { [weak self] success in
+                guard let self else { return }
+                if success {
+                    await self.handleDidShareItems(
+                        fileName: pending.fileName,
+                        pageCount: pending.pageCount
+                    )
+                } else {
+                    self.handleDidFailToShareItems(fileName: pending.fileName)
+                }
+                self.setSending(false)
+            }
+        } catch {
+            // canPerform false, no service, or no visible window: same as cancel.
+            handleDidFailToShareItems(fileName: pending.fileName)
+            setSending(false)
+        }
+    }
+
+    /// Writes the PDF to the outbox and records its path. Does not archive the session
+    /// and does not present AirDrop — that happens only after the share completes.
+    func composePDFForSend() async throws -> ComposedSend {
         let workingSession = session
         let composer = self.composer
         // Live outbox (FolderSettings), not `paths.outbox` — Settings changes take effect.
@@ -20,52 +67,54 @@ extension AppModel: SendCapable {
         let tempURL = outboxDir.appendingPathComponent(".shotdeck-\(UUID().uuidString).pdf")
         let title = "Redline – \(DubaiTime.stamp(workingSession.createdAt))"
 
-        do {
+        // D-13: build off the main actor. Only Sendable values cross into the
-            // D-13: build off the main actor. Only Sendable values cross into the
+        // detached task — never `anchor` (NSView is not Sendable).
-            // detached task — never `anchor` (NSView is not Sendable).
+        try await Task.detached(priority: .userInitiated) {
-            try await Task.detached(priority: .userInitiated) {
+            _ = try composer.compose(
-                _ = try composer.compose(
+                session: workingSession,
-                    session: workingSession,
+                imageURL: { capture in sourceDir.appendingPathComponent(capture.fileName) },
-                    imageURL: { capture in sourceDir.appendingPathComponent(capture.fileName) },
+                title: title,
-                    title: title,
+                to: tempURL
-                    to: tempURL
+            )
+            // POSIX rename onto `finalURL` replaces any same-name file in one
+            // directory operation; there is never a window where the PDF is gone.
+            if Darwin.rename(tempURL.path, finalURL.path) != 0 {
+                throw ShotdeckError.pdfCompositionFailed(
+                    reason: "could not publish the PDF: \(String(cString: strerror(errno)))"
                 )
-                // POSIX rename onto `finalURL` replaces any same-name file in one
-                // directory operation; there is never a window where the PDF is gone.
-                if Darwin.rename(tempURL.path, finalURL.path) != 0 {
-                    throw ShotdeckError.pdfCompositionFailed(
-                        reason: "could not publish the PDF: \(String(cString: strerror(errno)))"
-                    )
-                }
-                try AtomicFile.fsyncDirectory(at: outboxDir)
-            }.value
-
-            // File exists on disk now — archive only after that (D-13). A later AirDrop
-            // failure never deletes this file.
-            guard FileManager.default.fileExists(atPath: finalURL.path) else {
-                throw ShotdeckError.pdfCompositionFailed(reason: "the PDF was not written to disk")
             }
+            try AtomicFile.fsyncDirectory(at: outboxDir)
+        }.value
+
+        guard FileManager.default.fileExists(atPath: finalURL.path) else {
+            throw ShotdeckError.pdfCompositionFailed(reason: "the PDF was not written to disk")
+        }
+        rememberLastComposedPDF(finalURL)
+        return ComposedSend(
+            fileName: fileName,
+            fileURL: finalURL,
+            pageCount: workingSession.captures.count
+        )
+    }
+
+    /// `NSSharingServiceDelegate.sharingService(_:didShareItems:)` seam.
+    func handleDidShareItems(fileName: String, pageCount: Int) async {
+        guard !session.isEmpty else { return }
+        do {
             _ = try await spool.archiveCurrent(pdfFileName: fileName)
             replaceSession(try await spool.currentSession())
-
+            let pageWord = pageCount == 1 ? "page" : "pages"
-            let pageWord = workingSession.captures.count == 1 ? "page" : "pages"
+            setStatus("Sent — \(pageCount) \(pageWord).")
-            setStatus("Sent — \(workingSession.captures.count) \(pageWord).")
-
-            guard let anchor else {
-                setStatus("PDF saved to \(outboxDisplayName). Open the panel to AirDrop it.")
-                return
-            }
-            do {
-                try Sharing.airDrop(fileURL: finalURL, from: anchor)
-            } catch {
-                setStatus(
-                    "AirDrop is not available right now — the PDF is on your \(outboxDisplayName)."
-                )
-            }
         } catch {
-            // Never unlink the published PDF, and never unlink `tempURL` either:
+            setStatus((error as? ShotdeckError)?.errorDescription ?? "Could not archive the session.")
-            // a rename failure would leave the complete document at the temp name.
-            setStatus((error as? ShotdeckError)?.errorDescription ?? "The PDF could not be built.")
         }
     }
+
+    /// `NSSharingServiceDelegate.sharingService(_:didFailToShareItems:error:)` seam,
+    /// also used when `canPerform` is false or the user cancels. Does not archive.
+    func handleDidFailToShareItems(fileName: String) {
+        setStatus(
+            "AirDrop didn't complete — nothing was sent. Your captures are still here; the PDF is on your \(outboxDisplayName) as \(fileName)."
+        )
+    }
 }

Sources/Shotdeck/Sharing.swift

@@ -7,7 +7,14 @@ enum Sharing {
     /// Throws `ShotdeckError.airDropUnavailable` when the service cannot be created,
     /// `canPerform` is false, or `view` is not in a visible window (a detached view
     /// never produces an on-screen sheet).
-    static func airDrop(fileURL: URL, from view: NSView) throws {
+    ///
+    /// `onFinished` is invoked on the main actor when the sheet completes: `true` for
+    /// `didShareItems`, `false` for `didFailToShareItems` (including user cancel).
+    static func airDrop(
+        fileURL: URL,
+        from view: NSView,
+        onFinished: @escaping @MainActor @Sendable (Bool) async -> Void
+    ) throws {
         guard let service = NSSharingService(named: .sendViaAirDrop),
               service.canPerform(withItems: [fileURL]) else {
             throw ShotdeckError.airDropUnavailable
@@ -21,7 +28,12 @@ enum Sharing {
         window.makeKeyAndOrderFront(nil)
 
         service.subject = fileURL.lastPathComponent
-        let session = AirDropSession(service: service, window: window, view: view)
+        let session = AirDropSession(
+            service: service,
+            window: window,
+            view: view,
+            onFinished: onFinished
+        )
         AirDropSession.keepAlive(session)
         service.delegate = session
         service.perform(withItems: [fileURL])
@@ -29,7 +41,9 @@ enum Sharing {
 }
 
 /// Retains the sharing service for the life of the picker and supplies the real
-/// on-screen window as the sheet parent. `NSSharingService.delegate` is weak.
+/// on-screen window as the sheet parent. `NSSharingService.delegate` is weak, so
+/// `live` is the strong reference that keeps this object alive until the sheet
+/// reports success or failure (including cancel).
 @MainActor
 private final class AirDropSession: NSObject, NSSharingServiceDelegate {
     static var live: [AirDropSession] = []
@@ -37,11 +51,19 @@ private final class AirDropSession: NSObject, NSSharingServiceDelegate {
     let service: NSSharingService
     let window: NSWindow
     let view: NSView
+    let onFinished: @MainActor @Sendable (Bool) async -> Void
+    private var reported = false
 
-    init(service: NSSharingService, window: NSWindow, view: NSView) {
+    init(
+        service: NSSharingService,
+        window: NSWindow,
+        view: NSView,
+        onFinished: @escaping @MainActor @Sendable (Bool) async -> Void
+    ) {
         self.service = service
         self.window = window
         self.view = view
+        self.onFinished = onFinished
     }
 
     static func keepAlive(_ session: AirDropSession) {
@@ -52,6 +74,15 @@ private final class AirDropSession: NSObject, NSSharingServiceDelegate {
         Self.live.removeAll { $0 === self }
     }
 
+    private func report(_ success: Bool) {
+        guard !reported else { return }
+        reported = true
+        Task { @MainActor in
+            await self.onFinished(success)
+            self.drop()
+        }
+    }
+
     func sharingService(
         _ sharingService: NSSharingService,
         sourceWindowForShareItems items: [Any],
@@ -70,7 +101,7 @@ private final class AirDropSession: NSObject, NSSharingServiceDelegate {
     }
 
     func sharingService(_ sharingService: NSSharingService, didShareItems items: [Any]) {
-        drop()
+        report(true)
     }
 
     func sharingService(
@@ -78,6 +109,6 @@ private final class AirDropSession: NSObject, NSSharingServiceDelegate {
         didFailToShareItems items: [Any],
         error: any Error
     ) {
-        drop()
+        report(false)
     }
 }

Sources/ShotdeckCore/PDF/PDFComposer.swift

@@ -70,8 +70,8 @@ public struct PDFComposer: Sendable {
         }
     }
 
-    public static func fileName(for session: CaptureSession) -> String {
+    public static func fileName(for _: CaptureSession) -> String {
-        "Redline-\(DubaiTime.fileStamp(session.createdAt)).pdf"
+        "Redline-\(DubaiTime.fileStamp(Date())).pdf"
     }
 
     private static func writePDF(

Tests/ShotdeckCoreTests/PDFComposerTests.swift

@@ -203,6 +203,17 @@ private func pixelWindow(
     return (pixelX0, pixelY0, pixelX1, pixelY1)
 }
 
+@Test("fileName uses compose time, not session.createdAt, and matches Redline-yyyyMMdd-HHmmss.pdf")
+func fileNameUsesComposeTimeNotSessionCreatedAt() {
+    let old = Date(timeIntervalSince1970: 1_600_000_000) // 2020-09-13
+    let session = makeSession(captures: [], createdAt: old)
+    let name = PDFComposer.fileName(for: session)
+    #expect(name.wholeMatch(of: /^Redline-\d{8}-\d{6}\.pdf$/) != nil)
+    #expect(!name.contains(DubaiTime.fileStamp(old)))
+    let today = String(DubaiTime.fileStamp(Date()).prefix(8))
+    #expect(name.contains(today))
+}
+
 @Test("Three-page basic compose")
 func threePageBasicCompose() throws {
     let directory = try makeScratchDirectory()