chore: remove all references to PayloadCMS

package.json

@@ -18,8 +18,6 @@
     "landing:dev": "nx serve landing",
     "landing:build": "nx build landing",
     "landing:prod": "cd ./dist/apps/landing && npx next start",
-    "landing:generate:importmap": "PAYLOAD_CONFIG_PATH=apps/landing/src/payload.config.ts payload generate:importmap",
-    "landing:generate:types": "PAYLOAD_CONFIG_PATH=apps/landing/src/payload.config.ts payload generate:types",
     "ui:test": "nx test ui",
     "ui:build": "nx build ui",
     "ui:storybook": "nx storybook ui"
@@ -29,12 +27,7 @@
     "@ant-design/icons": "^6.0.0",
     "@hookform/resolvers": "^5.0.1",
     "@iconify/react": "^6.0.0",
-    "@payloadcms/db-postgres": "^3.37.0",
-    "@payloadcms/next": "^3.37.0",
-    "@payloadcms/richtext-lexical": "^3.37.0",
-    "@payloadcms/storage-s3": "^3.37.0",
     "@radix-ui/react-slot": "^1.2.0",
-    "@smithy/node-http-handler": "^4.0.4",
     "@tanstack/react-query": "^5.74.4",
     "@tanstack/react-store": "^0.7.0",
     "@tanstack/react-table": "^8.21.2",
@@ -46,7 +39,6 @@
     "js-cookie": "^3.0.5",
     "next": "~15.2.4",
     "next-themes": "^0.4.6",
-    "payload": "^3.37.0",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
     "react-hook-form": "^7.55.0",