Add permission-scoped MCP, readiness checks, and management UI improvements

packages/contracts/src/assistant.ts

@@ -0,0 +1,8 @@
+import { z } from "zod";
+
+export const createAssistantTokenInputSchema = z.object({
+  name: z.string().trim().min(1).max(80),
+  permissions: z.array(z.string().min(1).max(80)).min(1).max(64),
+  readOnly: z.boolean().default(true),
+  days: z.number().int().min(1).max(365).default(30),
+});