iCloud Backup, better chatview exp. bugfixes++

oAI/Providers/AnthropicProvider.swift

@@ -318,7 +318,41 @@ class AnthropicProvider: AIProvider {
                     conversationMessages.append(["role": "assistant", "content": msg["content"] as? String ?? ""])
                 }
             } else {
-                conversationMessages.append(["role": role, "content": msg["content"] as? String ?? ""])
+                // Content may be a String (plain text) or an Array (image/multipart blocks)
+                if let contentArray = msg["content"] as? [[String: Any]] {
+                    // Convert image_url blocks (OpenAI format) to Anthropic image blocks
+                    let anthropicBlocks: [[String: Any]] = contentArray.compactMap { block in
+                        let type = block["type"] as? String ?? ""
+                        if type == "text" {
+                            return block
+                        } else if type == "image_url",
+                                  let imageUrl = block["image_url"] as? [String: Any],
+                                  let url = imageUrl["url"] as? String,
+                                  url.hasPrefix("data:") {
+                            // data:<mediaType>;base64,<data>
+                            let withoutData = url.dropFirst(5) // strip "data:"
+                            guard let semicolon = withoutData.firstIndex(of: ";"),
+                                  let comma = withoutData.firstIndex(of: ",") else { return nil }
+                            let mediaType = String(withoutData[withoutData.startIndex..<semicolon])
+                            let base64Data = String(withoutData[withoutData.index(after: comma)...])
+                            return [
+                                "type": "image",
+                                "source": [
+                                    "type": "base64",
+                                    "media_type": mediaType,
+                                    "data": base64Data
+                                ]
+                            ]
+                        }
+                        return nil
+                    }
+                    if !anthropicBlocks.isEmpty {
+                        conversationMessages.append(["role": role, "content": anthropicBlocks])
+                    }
+                } else {
+                    let content = (msg["content"] as? String ?? "").trimmingCharacters(in: .whitespacesAndNewlines)
+                    conversationMessages.append(["role": role, "content": content.isEmpty ? "[Image]" : content])
+                }
             }
         }
 
@@ -518,7 +552,9 @@ class AnthropicProvider: AIProvider {
 
             if hasAttachments, let attachments = msg.attachments {
                 var contentBlocks: [[String: Any]] = []
-                contentBlocks.append(["type": "text", "text": msg.content])
+                if !msg.content.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty {
+                    contentBlocks.append(["type": "text", "text": msg.content])
+                }
 
                 for attachment in attachments {
                     guard let data = attachment.data else { continue }
@@ -541,7 +577,8 @@ class AnthropicProvider: AIProvider {
                 }
                 apiMessages.append(["role": msg.role.rawValue, "content": contentBlocks])
             } else {
-                apiMessages.append(["role": msg.role.rawValue, "content": msg.content])
+                let content = msg.content.trimmingCharacters(in: .whitespacesAndNewlines)
+                apiMessages.append(["role": msg.role.rawValue, "content": content.isEmpty ? "[Image]" : content])
             }
         }