docs(queue): add README, bin entrypoints, and publish prep (MQ-008)

packages/queue/package.json

@@ -2,16 +2,34 @@
   "name": "@mosaic/queue",
   "version": "0.0.1",
   "description": "Valkey-backed task queue exposed via CLI and MCP",
+  "license": "MIT",
   "type": "module",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    }
+  },
+  "bin": {
+    "mosaic": "dist/bin/mosaic.js",
+    "mosaic-queue-mcp": "dist/bin/mosaic-queue-mcp.js"
+  },
   "files": [
     "dist"
   ],
   "scripts": {
     "lint": "eslint \"src/**/*.ts\" \"tests/**/*.ts\" \"vitest.config.ts\"",
     "build": "tsc -p tsconfig.build.json",
-    "test": "vitest run"
+    "test": "vitest run",
+    "prepublishOnly": "pnpm lint && pnpm test && pnpm build"
+  },
+  "engines": {
+    "node": ">=20.0.0"
+  },
+  "publishConfig": {
+    "access": "public"
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.27.1",

packages/queue/src/bin/mosaic-queue-mcp.ts

@@ -0,0 +1,11 @@
+#!/usr/bin/env node
+
+import { startQueueMcpServer } from '../mcp-server.js';
+
+try {
+  await startQueueMcpServer();
+} catch (error) {
+  const message = error instanceof Error ? error.message : String(error);
+  console.error(message);
+  process.exitCode = 1;
+}

packages/queue/src/bin/mosaic.ts

@@ -0,0 +1,6 @@
+#!/usr/bin/env node
+
+import { runQueueCli } from '../cli.js';
+
+const exitCode = await runQueueCli(process.argv);
+process.exitCode = exitCode;