Add default export condition for CJS consumer compatibility

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: danmolitor

packages/core/package.json

@@ -28,7 +28,8 @@
         "import": "./dist/browser.js"
       },
       "types": "./dist/index.d.ts",
-      "import": "./dist/index.js"
+      "import": "./dist/index.js",
+      "default": "./dist/index.js"
     },
     "./browser": {
       "types": "./dist/browser.d.ts",

packages/react/package.json

@@ -8,7 +8,8 @@
   "exports": {
     ".": {
       "types": "./dist/index.d.ts",
-      "import": "./dist/index.js"
+      "import": "./dist/index.js",
+      "default": "./dist/index.js"
     }
   },
   "scripts": {