feat: add "Choose from Server" attachment picker to claim/preauth forms and chatbot

Native file inputs can't be pointed at a default server folder for security
reasons, so instead the Browse buttons on the Claim/PreAuth/Select Procedures
forms and the AI chatbot's attach button now also offer picking from
previously saved Cloud Storage attachments (e.g. Copy Agent screenshots) via
a new server-side picker modal, scoped per-patient on the claim forms and
unscoped (recent across all patients) in the chatbot.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/Frontend/src/components/layout/chatbot.tsx

@@ -11,6 +11,7 @@ import {
   Loader2,
   RotateCcw,
   Paperclip,
+  Image as ImageIcon,
 } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { Label } from "@/components/ui/label";
@@ -18,6 +19,7 @@ import { useLocation } from "wouter";
 import { cn } from "@/lib/utils";
 import { apiRequest } from "@/lib/queryClient";
 import { setChatbotPendingFiles } from "@/lib/chatbotFileStore";
+import { ServerAttachmentsPickerModal } from "@/components/file-upload/server-attachments-picker-modal";
 
 type Step =
   | "menu"
@@ -204,6 +206,7 @@ export function ChatbotButton() {
     renderingProvider: string | null;
   } | null>(null);
   const [pendingFiles, setPendingFiles] = useState<File[]>([]);
+  const [isServerPickerOpen, setIsServerPickerOpen] = useState(false);
   const [, setLocation] = useLocation();
   const messagesEndRef = useRef<HTMLDivElement>(null);
   const pasteRef = useRef<HTMLTextAreaElement>(null);
@@ -1490,6 +1493,16 @@ export function ChatbotButton() {
                   >
                     <Paperclip className="h-4 w-4" />
                   </Button>
+                  <Button
+                    size="sm"
+                    variant="ghost"
+                    className="h-9 w-9 p-0 shrink-0 text-gray-400 hover:text-gray-600"
+                    title="Attach screenshot"
+                    onClick={() => setIsServerPickerOpen(true)}
+                    disabled={step === "ai-loading"}
+                  >
+                    <ImageIcon className="h-4 w-4" />
+                  </Button>
                   <Button
                     size="sm"
                     className="h-9 w-9 p-0 shrink-0"
@@ -1518,6 +1531,13 @@ export function ChatbotButton() {
                     e.target.value = "";
                   }}
                 />
+                <ServerAttachmentsPickerModal
+                  open={isServerPickerOpen}
+                  onClose={() => setIsServerPickerOpen(false)}
+                  onFilesSelected={(files) =>
+                    setPendingFiles((prev) => [...prev, ...files].slice(0, 5))
+                  }
+                />
               </div>
             )}
           </div>