improvement(branding): white-background sim wordmark for og image (#4683)

Swap the default Open Graph and Twitter card image from the purple "sim"
lettermark on purple to the brand wordmark (green icon + dark "sim" text)
centered on a white background. Pulled directly from the sidebar's
wordmark-dark.svg so the asset stays in sync with the in-app brand.

- New asset at /logo/426-240/reverse/small.png (2130x1200, matches
  declared OG dimensions)
- Default branded metadata + landing-page-specific overrides both updated;
  all sub-pages that inherit the default pick up the new image
  automatically

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

Author: waleedlatif1

apps/sim/app/page.tsx

@@ -31,7 +31,7 @@ export const metadata: Metadata = {
     locale: 'en_US',
     images: [
       {
-        url: '/logo/426-240/primary/small.png',
+        url: '/logo/426-240/reverse/small.png',
         width: 2130,
         height: 1200,
         alt: 'Sim — The AI Workspace for Teams',
@@ -47,7 +47,7 @@ export const metadata: Metadata = {
     description:
       'Sim is the open-source AI workspace where teams build, deploy, and manage AI agents. Connect 1,000+ integrations and every major LLM to create agents that automate real work.',
     images: {
-      url: '/logo/426-240/primary/small.png',
+      url: '/logo/426-240/reverse/small.png',
       alt: 'Sim — The AI Workspace for Teams',
     },
   },

apps/sim/ee/whitelabeling/metadata.ts

@@ -72,7 +72,7 @@ export function generateBrandedMetadata(override: Partial<Metadata> = {}): Metad
       siteName: brand.name,
       images: [
         {
-          url: brand.logoUrl || '/logo/426-240/primary/small.png',
+          url: brand.logoUrl || '/logo/426-240/reverse/small.png',
           width: 2130,
           height: 1200,
           alt: brand.name,
@@ -83,7 +83,7 @@ export function generateBrandedMetadata(override: Partial<Metadata> = {}): Metad
       card: 'summary_large_image',
       title: defaultTitle,
       description: summaryFull,
-      images: [brand.logoUrl || '/logo/426-240/primary/small.png'],
+      images: [brand.logoUrl || '/logo/426-240/reverse/small.png'],
       creator: '@simdotai',
       site: '@simdotai',
     },