feat: save insurance PDFs (eligibility/claims/preauth) to Cloud Storage instead of Postgres blobs

New saves go into the patient's Cloud Storage folder under category subfolders
(Eligibility/Claims/PreAuth/Claim Status/Attachments) via a new
storage.savePdfToCloudStorage helper, instead of the legacy PdfGroup/PdfFile
Postgres blob tables. Old records and their read paths are left untouched for
backward compatibility; PDF list/content/delete endpoints and viewers now
transparently handle both legacy numeric ids and new "cloud:<id>" ids.

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

apps/Backend/src/routes/insuranceStatus.ts

@@ -521,36 +521,18 @@ router.post(
           ) {
             try {
               const pdfBuf = await fs.readFile(seleniumResult.pdf_path);
-              const groupTitle = "Eligibility Status";
-              const groupTitleKey = "ELIGIBILITY_STATUS";
+              const patientName = `${updatedPatient.firstName ?? ""} ${updatedPatient.lastName ?? ""}`.trim();
 
-              let group = await storage.findPdfGroupByPatientTitleKey(
+              const cloudFile = await storage.savePdfToCloudStorage(
+                req.user.id,
                 updatedPatient.id,
-                groupTitleKey
-              );
-              if (!group) {
-                group = await storage.createPdfGroup(
-                  updatedPatient.id,
-                  groupTitle,
-                  groupTitleKey
-                );
-              }
-              if (!group?.id)
-                throw new Error("Failed to create/find pdf group");
-
-              const created = await storage.createPdfFile(
-                group.id,
+                patientName || `Patient ${updatedPatient.id}`,
+                "Eligibility",
                 path.basename(seleniumResult.pdf_path),
                 pdfBuf
               );
 
-              if (created && typeof created === "object" && "id" in created) {
-                resultItem.pdfFileId = Number(created.id);
-              } else if (typeof created === "number") {
-                resultItem.pdfFileId = created;
-              } else if (created && (created as any).id) {
-                resultItem.pdfFileId = (created as any).id;
-              }
+              resultItem.pdfFileId = `cloud:${cloudFile.id}`;
 
               resultItem.processed = true;
             } catch (pdfErr: any) {