feat: add authenticated remote MCP access and complete business workflows

apps/api/prisma/migrations/20261003100000_agent_audit/migration.sql

@@ -0,0 +1,15 @@
+-- CreateTable
+CREATE TABLE `AgentCall` (
+    `id` CHAR(36) NOT NULL,
+    `userId` CHAR(36) NOT NULL,
+    `grantId` CHAR(36) NOT NULL,
+    `tool` VARCHAR(100) NOT NULL,
+    `status` VARCHAR(16) NOT NULL,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+
+    INDEX `AgentCall_userId_createdAt_idx`(`userId`, `createdAt`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- AddForeignKey
+ALTER TABLE `AgentCall` ADD CONSTRAINT `AgentCall_userId_fkey` FOREIGN KEY (`userId`) REFERENCES `User`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;