diff --git a/Kanban/App/AppCommands.swift b/Kanban/App/AppCommands.swift
index d57d869..c0f968e 100644
--- a/Kanban/App/AppCommands.swift
+++ b/Kanban/App/AppCommands.swift
@@ -516,7 +516,7 @@ struct ShareBoardCommand: View {
         Task { @MainActor in
             // Weak: the window this share was invoked from must not be kept alive by this task
             // across the flush's `await` just so the picker can anchor to it later.
-            weak var invokedWindow = NSApp.keyWindow ?? NSApp.mainWindow
+            weak let invokedWindow = NSApp.keyWindow ?? NSApp.mainWindow
 
             let cancellation = BoardCopyCancellation<BoardShareStager.StagedArchive>()
             let operation = store.banners.beginOperation(
diff --git a/Kanban/App/BoardShareStager.swift b/Kanban/App/BoardShareStager.swift
index 62fceb3..5c7cafe 100644
--- a/Kanban/App/BoardShareStager.swift
+++ b/Kanban/App/BoardShareStager.swift
@@ -206,17 +206,14 @@ enum BoardShareStager {
 
         do {
             try DittoZipArchiver.zip(contentsOf: treeCopy, to: zipURL)
-        } catch let zipFailure as DittoZipArchiver.Failure {
+        } catch {
             try? FileManager.default.removeItem(at: root)
-            switch zipFailure {
+            switch error {
             case let .launchFailed(message):
                 throw failure(at: treeCopy, "could not start the archiver: \(message)")
             case let .nonZeroExit(status, message):
                 throw failure(at: treeCopy, "the archiver exited with status \(status): \(message)")
             }
-        } catch {
-            try? FileManager.default.removeItem(at: root)
-            throw failure(at: treeCopy, "could not create the zip: \(error.localizedDescription)")
         }
 
         // The zip is what the picker shares; the decompressed tree underneath it was only ever a
diff --git a/Kanban/LiveStore/BoardStore.swift b/Kanban/LiveStore/BoardStore.swift
index da2f3c1..1dc997e 100644
--- a/Kanban/LiveStore/BoardStore.swift
+++ b/Kanban/LiveStore/BoardStore.swift
@@ -2371,7 +2371,7 @@ public final class BoardStore: HealHost {
         guard let priorImage, priorImage != newReference,
             let bareName = BoardBackdrop.qualifiedBareName(of: priorImage)
         else { return }
-        try? BoardWriter.trashBoardImage(
+        _ = try? BoardWriter.trashBoardImage(
             named: bareName, inFolder: backgroundsFolder, healMarked: false,
             operation: .tidyBackgroundImage(filename: bareName)
         )