implement dark theme in landing page and fix build issue

Author: CodeMaverick-143

package-lock.json

@@ -5,7 +5,7 @@
   "type": "module",
   "scripts": {
     "dev": "vite",
-    "build": "vite build",
+    "build": "NODE_OPTIONS='--max-old-space-size=8192' vite build",
     "lint": "eslint . --ext js,jsx --report-unused-disable-directives --max-warnings 0",
     "preview": "vite preview"
   },
@@ -15,7 +15,10 @@
     "@dnd-kit/sortable": "^10.0.0",
     "@dnd-kit/utilities": "^3.2.2",
     "@douyinfe/semi-ui": "^2.77.1",
-    "@lexical/react": "^0.12.5",
+    "@lexical/react": "^0.12.6",
+    "@lexical/rich-text": "^0.38.2",
+    "@lexical/selection": "^0.38.2",
+    "@lexical/utils": "^0.12.6",
     "@monaco-editor/react": "^4.7.0",
     "@vercel/analytics": "^1.2.2",
     "@vercel/speed-insights": "^1.2.0",
@@ -31,7 +34,7 @@
     "jsonschema": "^1.4.1",
     "jspdf": "^3.0.2",
     "jszip": "^3.10.1",
-    "lexical": "^0.12.5",
+    "lexical": "^0.12.6",
     "lodash": "^4.17.21",
     "luxon": "^3.7.1",
     "nanoid": "^5.1.5",