fix(printService): restore file on failed plate database update

If the plate database update fails after moving a file, the file's
location no longer matches the stored path. Wrap the update in a
try-catch to restore the file to its original location on failure,
so the stored path still finds it.

backend/src/services/importService.ts

@@ -501,7 +501,7 @@ async function addProfilePlateWithDetails(
   const naming = profilePlateNaming(existing.plates, file.filename, instanceId, details.titles);
   // The earlier profiles first, so the new file is placed under its own name once and never moved while its preview
   // renders. Only profiles' own plates are renamed, so the content match addProfilePlate makes on untagged ones holds.
-  // Best-effort: the profile comes in either way.
+  // Best-effort: a failed move leaves the file where its plate says it is, and the profile comes in either way.
   await renameProfilePlates(existing.print.id, naming.renames).catch(() => undefined);
   const result = await addProfilePlate(existing, { ...file, filename: naming.filename }, instanceId);
   if (!result.profileAdded) return result;

backend/src/services/printService.ts

@@ -356,9 +356,19 @@ export async function relocatePrint(print: PrintLike, plates: Plate[], template?
     if (oldExists) {
       await fs.mkdir(path.dirname(newPath), { recursive: true });
       await fs.rename(oldPath, newPath);
-      await pruneEmptyStorageDirs(path.dirname(oldPath));
     }
-    await prisma.plate.update({ where: { id: plate.id }, data: { storagePath: newRelative } });
+    try {
+      await prisma.plate.update({ where: { id: plate.id }, data: { storagePath: newRelative } });
+    } catch (err) {
+      // Put the file back, so the plate's stored path still finds it.
+      if (oldExists) {
+        await fs.mkdir(path.dirname(oldPath), { recursive: true });
+        await fs.rename(newPath, oldPath);
+        await pruneEmptyStorageDirs(path.dirname(newPath));
+      }
+      throw err;
+    }
+    if (oldExists) await pruneEmptyStorageDirs(path.dirname(oldPath));
   }
 }