fix: cascade-delete stale ClaimFile rows and sync claim attachments

Deleting/replacing an appointment attachment left an orphaned ClaimFile
copy behind (auto-linked earlier by autoLinkAppointmentFiles), causing
the Selenium claim automation to upload extra files beyond what's
currently attached to the appointment. Claim PUT was also append-only
for claimFiles, so removing an attachment in the UI never persisted.

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

apps/Backend/src/storage/appointment-procedures-storage.ts

@@ -237,6 +237,12 @@ export const appointmentProceduresStorage: IAppointmentProceduresStorage = {
 
     await db.appointmentFile.delete({ where: { id: fileId } });
 
+    // Remove any ClaimFile copies previously auto-linked from this appointment file
+    // so a deleted/replaced attachment doesn't linger on the claim and get re-uploaded.
+    await db.claimFile.deleteMany({
+      where: { filename: file.filename, claim: { appointmentId } },
+    });
+
     // Best-effort cleanup of the underlying cloud-storage file/disk copy.
     if (file.filePath) {
       const cloudFile = await db.cloudFile.findFirst({