fix: CCA preauth status stays Submitted (not Approved) and screenshot mime type

- ccaPreAuthProcessor: keep claim status as PREAUTH after successful
  submission instead of jumping straight to APPROVED, matching the
  Tufts SCO/UnitedDH/MassHealth preauth flows; also tag PNG fallback
  screenshots with image/png instead of the default application/pdf
  so they render in the Documents preview modal.
- claims-recent-table: add a PREAUTH status case so it displays as
  "Submitted" instead of falling through to the raw enum value.

apps/Backend/src/queue/processors/ccaPreAuthProcessor.ts

@@ -102,7 +102,7 @@ export async function runCCAPreAuthProcessor(
   // Save authNumber into the claim record (preauth no column)
   if (claimId && authNumber) {
     try {
-      await storage.updateClaim(claimId, { claimNumber: authNumber, status: "APPROVED" } as any);
+      await storage.updateClaim(claimId, { claimNumber: authNumber, status: "PREAUTH" } as any);
       log("cca-preauth-processor", "authNumber saved to claim", { claimId, authNumber });
     } catch (e: any) {
       log("cca-preauth-processor", "failed to save authNumber to claim", { error: e?.message });
@@ -117,13 +117,15 @@ export async function runCCAPreAuthProcessor(
       const pdfBuffer = Buffer.from(pdfBase64, "base64");
       const patient = await storage.getPatient(patientId);
       const patientName = patient ? `${patient.firstName ?? ""} ${patient.lastName ?? ""}`.trim() : "";
+      const mimeType = pdfFilename.toLowerCase().endsWith(".png") ? "image/png" : "application/pdf";
       const cloudFile = await storage.savePdfToCloudStorage(
         userId,
         patientId,
         patientName || `Patient ${patientId}`,
         "PreAuth",
         pdfFilename,
-        pdfBuffer
+        pdfBuffer,
+        mimeType
       );
       pdfFileId = `cloud:${cloudFile.id}`;
       log("cca-preauth-processor", "PDF saved", { pdfFilename, pdfFileId, patientId });

apps/Frontend/src/components/claims/claims-recent-table.tsx

@@ -287,6 +287,12 @@ export default function ClaimsRecentTable({
           color: "bg-red-100 text-red-800",
           icon: <AlertCircle className="h-3 w-3 mr-1" />,
         };
+      case "PREAUTH":
+        return {
+          label: "Submitted",
+          color: "bg-blue-100 text-blue-800",
+          icon: <Clock className="h-3 w-3 mr-1" />,
+        };
       default:
         return {
           label: status