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

prisma/migrations/20260812100838_add_word_cloud_job/migration.sql

@@ -0,0 +1,22 @@
+-- CreateEnum
+CREATE TYPE "WordCloudJobStatus" AS ENUM ('QUEUED', 'RUNNING', 'SUCCESS', 'FAILED');
+
+-- CreateTable
+CREATE TABLE "WordCloudJob" (
+    "id" TEXT NOT NULL,
+    "userId" TEXT NOT NULL,
+    "status" "WordCloudJobStatus" NOT NULL DEFAULT 'QUEUED',
+    "progress" INTEGER NOT NULL DEFAULT 0,
+    "imageUrl" TEXT,
+    "error" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "WordCloudJob_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "WordCloudJob_userId_idx" ON "WordCloudJob"("userId");
+
+-- AddForeignKey
+ALTER TABLE "WordCloudJob" ADD CONSTRAINT "WordCloudJob_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

prisma/migrations/20260812101101_add_remote_job_id/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "WordCloudJob" ADD COLUMN     "remoteJobId" TEXT;