fix(translation): backfill parts.description after async LLM translation

Worker was updating parts.name but not parts.description, so PCAT part
notices stayed raw English forever once cached. Match on raw value still
being present — once translated, the row no longer matches and we stop
touching it.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

apps/api/src/jobs/processors/translation.processor.ts

@@ -127,6 +127,15 @@ export async function processTranslation(
          AND name_original = ${orig}
          AND name = name_original
     `);
+    // PCAT also stores the part `notice` field as `description`. We don't
+    // track a `description_original`, so match on the raw English value
+    // still being present — once translated, the row won't re-match.
+    await db.execute(drizzleSql`
+      UPDATE parts
+         SET description = ${tr}
+       WHERE source = 'parts-catalogs'
+         AND description = ${orig}
+    `);
   }
 
   // Invalidate translation lookup cache so next read sees DB value.