Improve chat UX: paste images and language-aware TTS

- Remove clipboard button, add ⌘V paste support for images
- Add automatic language detection for TTS (French/English)
- Use appropriate voice based on message language
- Simplify TTS to use system default voices

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Sources/AppleIntelligenceApp/ViewModels/ChatViewModel.swift

@@ -429,12 +429,10 @@ final class ChatViewModel {
         utterance.pitchMultiplier = 1.0
         utterance.volume = 1.0
 
-        // Use voice matching current speech recognition language
-        if detectedLanguage == "fr-CA" {
-            utterance.voice = AVSpeechSynthesisVoice(language: "fr-CA")
-        } else {
-            utterance.voice = AVSpeechSynthesisVoice(language: "en-CA")
-        }
+        // Detect message language and use appropriate voice
+        let isFrench = Self.detectFrench(message.content)
+        let language = isFrench ? "fr-CA" : "en-US"
+        utterance.voice = AVSpeechSynthesisVoice(language: language)
 
         // Create synthesizer and delegate
         let synthesizer = AVSpeechSynthesizer()
@@ -460,6 +458,25 @@ final class ChatViewModel {
         isSpeaking = false
         speakingMessageId = nil
     }
+
+    /// Detect if text is likely French based on common words
+    private static func detectFrench(_ text: String) -> Bool {
+        let lowercased = text.lowercased()
+        let frenchIndicators = [
+            " le ", " la ", " les ", " un ", " une ", " des ",
+            " je ", " tu ", " il ", " elle ", " nous ", " vous ", " ils ", " elles ",
+            " est ", " sont ", " avoir ", " être ", " fait ", " faire ",
+            " que ", " qui ", " quoi ", " dans ", " pour ", " avec ", " sur ",
+            " ce ", " cette ", " ces ", " mon ", " ma ", " mes ",
+            " pas ", " plus ", " très ", " bien ", " aussi ",
+            "bonjour", "merci", "salut", "oui", "non", "peut",
+            " et ", " ou ", " mais ", " donc ", " car ",
+            "c'est", "j'ai", "qu'est", "n'est", "d'un", "l'on"
+        ]
+
+        let frenchCount = frenchIndicators.filter { lowercased.contains($0) }.count
+        return frenchCount >= 2
+    }
 }
 
 // MARK: - Speech Synthesizer Delegate

Sources/AppleIntelligenceApp/Views/ChatView.swift

@@ -278,17 +278,7 @@ struct ChatView: View {
                     .foregroundStyle(.secondary)
             }
             .buttonStyle(.plain)
-            .help("Add image")
-
-            Button {
-                viewModel.addImageFromPasteboard()
-            } label: {
-                Image(systemName: "doc.on.clipboard")
-                    .font(.title3)
-                    .foregroundStyle(.secondary)
-            }
-            .buttonStyle(.plain)
-            .help("Paste image from clipboard")
+            .help("Add image (or paste with ⌘V)")
 
             // Language toggle for speech recognition
             Button {
@@ -361,6 +351,26 @@ struct ChatView: View {
             }
         }
         .padding()
+        .onPasteCommand(of: [.image, .png, .jpeg, .tiff]) { providers in
+            for provider in providers {
+                // Try to load as image
+                if provider.hasItemConformingToTypeIdentifier(UTType.image.identifier) {
+                    provider.loadDataRepresentation(forTypeIdentifier: UTType.image.identifier) { data, _ in
+                        if let data = data {
+                            DispatchQueue.main.async {
+                                let attachment = ImageAttachment(data: data, filename: "pasted_image.png")
+                                if viewModel.pendingImages.count < 5 {
+                                    viewModel.pendingImages.append(attachment)
+                                }
+                            }
+                        }
+                    }
+                    return
+                }
+            }
+            // Fallback to pasteboard check
+            viewModel.addImageFromPasteboard()
+        }
     }
 }