Directory-submission readiness: add MCP tool annotations (title + readOnlyHint/destructiveHint), /privacy policy route + README Privacy Policy section, bump to 2.3.2

dist/server.d.ts

@@ -0,0 +1,10 @@
+import { Server } from "@modelcontextprotocol/sdk/server/index.js";
+import { Tool } from "@modelcontextprotocol/sdk/types.js";
+import { CourierRegistry } from "./registry.js";
+export declare const TOOLS: Tool[];
+/**
+ * Build a fully-wired MCP Server bound to a given CourierRegistry.
+ * The registry carries the credentials — for STDIO it comes from env,
+ * for HTTP it is built per-request from that client's keys.
+ */
+export declare function buildMcpServer(registry: CourierRegistry): Server;