feat(wordcloud): WordCloudJob 模型/迁移 + 词云生成与轮询适配器

package.json

@@ -35,6 +35,7 @@
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.1",
     "dayjs": "^1.11.0",
+    "exceljs": "^4.4.0",
     "ioredis": "^5.4.0",
     "joi": "^17.13.0",
     "passport": "^0.7.0",
@@ -46,6 +47,7 @@
     "@nestjs/cli": "^11.0.0",
     "@nestjs/schematics": "^11.0.0",
     "@types/express": "^5.0.0",
+    "@types/multer": "^2.2.0",
     "@types/node": "^22.0.0",
     "@types/passport-jwt": "^4.0.1",
     "eslint": "^9.0.0",