try

apps/cms/.npmrc

@@ -1,5 +0,0 @@
-# Override workspace config to allow sharp to build platform-specific binaries
-# This is required for Payload CMS to work correctly on Vercel
-ignored-built-dependencies=
-platform=linux
-arch=x64

apps/cms/package.json

@@ -58,7 +58,7 @@
     "react-markdown": "^10.1.0",
     "rehype-highlight": "^7.0.2",
     "remark-gfm": "^4.0.1",
-    "sharp": "0.32.6",
+    "sharp": "0.32.2",
     "tailwind-merge": "^1.13.2",
     "tsx": "^4.19.3",
     "typescript": "catalog:"

apps/cms/src/payload.config.ts

@@ -106,6 +106,7 @@ export default buildConfig({
   },
   // Reduce payload init overhead
   telemetry: false,
+  // @ts-expect-error
   sharp,
   plugins,
 })