Fix React 19 peer deps and update import map

CHANGELOG.md

@@ -0,0 +1,6 @@
+# Changelog
+
+## 2025-11-21
+- Upgraded `lucide-react` to `^0.554.0` to satisfy React 19 peer requirements and allow clean installs.
+- Updated the import map in `index.html` to pull React 19.2.0 and the matching `lucide-react` CDN build so dev server uses the same versions.
+- Regenerated `package-lock.json` from a fresh `npm install`; verified `npm run build` succeeds.

index.html

@@ -38,12 +38,12 @@
     <script type="importmap">
 {
   "imports": {
-    "react": "https://esm.sh/react@18.2.0",
+    "react": "https://esm.sh/react@19.2.0",
-    "react-dom": "https://esm.sh/react-dom@18.2.0",
+    "react-dom": "https://esm.sh/react-dom@19.2.0",
-    "react-dom/client": "https://esm.sh/react-dom@18.2.0/client",
+    "react-dom/client": "https://esm.sh/react-dom@19.2.0/client",
-    "lucide-react": "https://esm.sh/lucide-react@0.263.1",
+    "lucide-react": "https://esm.sh/lucide-react@0.554.0",
-    "react-dom/": "https://aistudiocdn.com/react-dom@^19.2.0/",
+    "react-dom/": "https://aistudiocdn.com/react-dom@19.2.0/",
-    "react/": "https://aistudiocdn.com/react@^19.2.0/"
+    "react/": "https://aistudiocdn.com/react@19.2.0/"
   }
 }
 </script>

package.json

@@ -11,7 +11,7 @@
   "dependencies": {
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
-    "lucide-react": "0.263.1"
+    "lucide-react": "^0.554.0"
   },
   "devDependencies": {
     "@types/node": "^22.14.0",