Fix Web Sockets. Form into library. Move demo to demo folder. Split demo between sse and websocket.

package.json

@@ -1,18 +1,25 @@
 {
-  "name": "minimal-sync",
+  "name": "@xo-cash/sync-client",
   "version": "1.0.0",
-  "description": "",
+  "description": "A minimal sync client for the XO Cash Sync Server",
   "main": "index.js",
   "type": "module",
   "scripts": {
+    "build": "tsc",
     "start": "tsx src/index.ts",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
+  "exports": {
+    ".": {
+      "import": "./dist/index.js",
+      "require": "./dist/index.cjs"
+    }
+  },
   "keywords": [],
   "author": "",
   "license": "ISC",
   "devDependencies": {
-    "@types/node": "^26.1.1",
+    "@types/node": "^26.6.1",
     "tsx": "^4.23.1",
     "typescript": "^7.0.2"
   },