first commit

server/prisma/migrations/20260117000000_add_payment_callback_table/migration.sql

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+-- CreateTable: 支付回调防重放记录
+CREATE TABLE IF NOT EXISTS "payment_callbacks" (
+    "id" SERIAL NOT NULL,
+    "provider_id" INTEGER NOT NULL,
+    "order_no" TEXT NOT NULL,
+    "trade_no" TEXT,
+    "callback_ip" TEXT,
+    "processed" BOOLEAN NOT NULL DEFAULT true,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "payment_callbacks_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex: 联合唯一索引防重放
+CREATE UNIQUE INDEX IF NOT EXISTS "payment_callbacks_provider_id_order_no_trade_no_key" ON "payment_callbacks"("provider_id", "order_no", "trade_no");
+
+-- CreateIndex: 用于定期清理
+CREATE INDEX IF NOT EXISTS "payment_callbacks_created_at_idx" ON "payment_callbacks"("created_at");