macos: preview images in the clipboard read confirmation dialog

macos/Sources/Features/ClipboardConfirmation/ClipboardConfirmationController.swift

@@ -56,6 +56,7 @@ class ClipboardConfirmationController: NSWindowController {
             request: confirmation.kind,
             programName: confirmation.programName,
             canRemember: confirmation.canRemember,
+            previewImage: confirmation.previewImage,
             delegate: delegate
         ))
     }

macos/Sources/Features/ClipboardConfirmation/ClipboardConfirmationView.swift

@@ -39,6 +39,10 @@ struct ClipboardConfirmationView: View {
     /// grant, showing the remember toggle.
     var canRemember: Bool = false
 
+    /// An image decoded from the request contents, shown scaled in
+    /// place of most of the text area when present.
+    var previewImage: NSImage?
+
     /// Optional delegate to get results. If this is nil, then this view will never close on its own.
     weak var delegate: ClipboardConfirmationViewDelegate?
 
@@ -62,9 +66,17 @@ struct ClipboardConfirmationView: View {
                     .padding()
             }
 
-            TextEditor(text: .constant(contents))
-                .focusable(false)
-                .font(.system(.body, design: .monospaced))
+            if let previewImage {
+                Image(nsImage: previewImage)
+                    .resizable()
+                    .aspectRatio(contentMode: .fit)
+                    .frame(maxWidth: .infinity, maxHeight: .infinity)
+                    .padding(.horizontal)
+            } else {
+                TextEditor(text: .constant(contents))
+                    .focusable(false)
+                    .font(.system(.body, design: .monospaced))
+            }
 
             if canRemember {
                 Toggle("Remember this choice for the session", isOn: $remember)

macos/Sources/Ghostty/Ghostty.App.swift

@@ -391,6 +391,13 @@ extension Ghostty {
                 .flatMap { String(data: $0.data, encoding: .utf8) }
                 ?? reps.map { "\($0.mime) (\($0.data.count) bytes)" }.joined(separator: "\n")
 
+            // Decode an image representation so the dialog can preview
+            // exactly what would be disclosed rather than a byte count.
+            let previewImage: NSImage? = reps.lazy
+                .filter { $0.mime.hasPrefix("image/") }
+                .compactMap { NSImage(data: $0.data) }
+                .first
+
             // libghostty reaches this callback only when the request attempted
             // by readClipboard requires confirmation. Reads allowed by policy
             // complete immediately and never become pending Swift state.
@@ -399,7 +406,8 @@ extension Ghostty {
                 contents: display,
                 kind: kind,
                 programName: c.name.map { String(cString: $0) },
-                canRemember: c.can_remember
+                canRemember: c.can_remember,
+                previewImage: previewImage
             ) { surfaceView, confirmed, remember in
                 guard let surface = surfaceView.surface else { return }
                 if confirmed {

macos/Sources/Ghostty/Ghostty.ClipboardConfirmationRequest.swift

@@ -1,3 +1,4 @@
+import AppKit
 import Foundation
 import GhosttyKit
 
@@ -81,6 +82,11 @@ extension Ghostty {
         /// grant, showing a remember option in the prompt.
         let canRemember: Bool
 
+        /// An image decoded from the request contents, previewed scaled
+        /// in the dialog when the request carries an image
+        /// representation.
+        let previewImage: NSImage?
+
         /// Called exactly once with whether the user confirmed the
         /// request and whether their decision should be remembered.
         private var completion: ((SurfaceView, Bool, Bool) -> Void)?
@@ -91,6 +97,7 @@ extension Ghostty {
             kind: ClipboardRequest,
             programName: String? = nil,
             canRemember: Bool = false,
+            previewImage: NSImage? = nil,
             completion: @escaping (SurfaceView, Bool, Bool) -> Void
         ) {
             self.surface = surface
@@ -98,6 +105,7 @@ extension Ghostty {
             self.kind = kind
             self.programName = programName
             self.canRemember = canRemember
+            self.previewImage = previewImage
             self.completion = completion
         }