feat: save claim attachments to cloud storage and documents page

- Claim file uploads (chatbot or manual) now save to both the Cloud
  Storage patient folder and the Documents page via new
  POST /api/claims/upload-to-cloud endpoint
- MH submit flow now calls uploadAttachmentsToLocalFolder (same as
  DDMA/United/Tufts) so chatbot-attached X-rays are persisted
- Removed old /upload-attachments disk route and attachmentDiskStorage
  multer config; deleted uploads/patients/ folder
- uploadAttachmentsToLocalFolder now points to /upload-to-cloud and
  sends patientId so the backend can create the patient folder

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/Backend/src/routes/ai-settings.ts

@@ -313,9 +313,9 @@ router.post("/create-appointment-today", async (req: Request, res: Response): Pr
   try {
     const userId = req.user?.id;
     if (!userId) return res.status(401).json({ message: "Unauthorized" });
-    const { patientId } = req.body;
+    const { patientId, date } = req.body;
     if (!patientId) return res.status(400).json({ message: "patientId is required" });
-    const result = await createAppointmentToday(Number(patientId), userId, storage);
+    const result = await createAppointmentToday(Number(patientId), userId, storage, date ?? undefined);
     if ("error" in result) return res.status(409).json({ message: result.error });
     return res.status(200).json(result);
   } catch (err) {