feat(08-05-contract-detail-workspace): 完成合同详情与终止状态治理

server/prisma/migrations/20260807193000_contract_registry_termination_workspace/migration.sql

@@ -0,0 +1,15 @@
+-- AlterTable
+ALTER TABLE "contract_registry"
+ADD COLUMN "terminated_at" TIMESTAMP(3),
+ADD COLUMN "terminated_reason" VARCHAR(1000),
+ADD COLUMN "terminated_by" UUID;
+
+-- CreateIndex
+CREATE INDEX "idx_contract_registry_terminator_terminated"
+ON "contract_registry"("terminated_by", "terminated_at");
+
+-- AddForeignKey
+ALTER TABLE "contract_registry"
+ADD CONSTRAINT "contract_registry_terminated_by_fkey"
+FOREIGN KEY ("terminated_by") REFERENCES "employees"("id")
+ON DELETE RESTRICT ON UPDATE CASCADE;