fix: remove presigned branding upload (#3053)

packages/lib/constants/branding.ts

@@ -9,3 +9,13 @@
  * cap so a malicious or runaway payload can't exhaust PostCSS/server memory.
  */
 export const BRANDING_CSS_MAX_LENGTH = 256 * 1024;
+
+/**
+ * Branding logo upload constraints. Enforced server-side at the TRPC request
+ * boundary (`zfdBrandingImageFile`) and reused by the client form for matching UX.
+ */
+export const BRANDING_LOGO_MAX_SIZE_MB = 5;
+
+export const BRANDING_LOGO_MAX_SIZE_BYTES = BRANDING_LOGO_MAX_SIZE_MB * 1024 * 1024;
+
+export const BRANDING_LOGO_ALLOWED_TYPES: string[] = ['image/jpeg', 'image/png', 'image/webp'];