chore: isolate frontend and backend via npm workspaces and @mmapp/contracts

Co-authored-by: Cursor <[email protected]>

packages/contracts/package.json

@@ -3,14 +3,30 @@
   "version": "0.1.0",
   "private": true,
   "type": "module",
+  "files": [
+    "dist"
+  ],
   "scripts": {
-    "build": "tsc -p tsconfig.json"
+    "build": "tsc -p tsconfig.json",
+    "prepare": "npm run build"
   },
   "exports": {
-    ".": "./dist/index.js",
-    "./servers": "./dist/servers.js",
-    "./alerts": "./dist/alerts.js",
-    "./events": "./dist/events.js"
+    ".": {
+      "types": "./dist/index.d.ts",
+      "default": "./dist/index.js"
+    },
+    "./servers": {
+      "types": "./dist/servers.d.ts",
+      "default": "./dist/servers.js"
+    },
+    "./alerts": {
+      "types": "./dist/alerts.d.ts",
+      "default": "./dist/alerts.js"
+    },
+    "./events": {
+      "types": "./dist/events.d.ts",
+      "default": "./dist/events.js"
+    }
   },
   "dependencies": {
     "zod": "^4.4.1"