brand: recreate og-image.jpg with Eranos marks; drop 'Who made Eranos?' FAQ

og-image.jpg (the link-preview image for eranos.fund) still carried the
Agora bolt logo and wordmark, plus an in-app mockup labeled 'Agora'.
Recreated it in-place via a headless-Chromium render: same world-map/
phone-mockup background, Agora branding swapped for the Eranos phoenix
in both spots.

Also removed the 'Who made Eranos?' FAQ entry, which credited Soapbox/
Ditto (the upstream Agora fork) rather than describing Eranos itself.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/lib/helpContent.ts

@@ -77,7 +77,6 @@ const FAQ_STRUCTURE: FAQCategoryStructure[] = [
     items: [
       { id: 'what-is-ditto' },
       { id: 'cost-to-use' },
-      { id: 'who-made-this' },
     ],
   },
   {

src/locales/en.json

@@ -2218,12 +2218,6 @@
           "**No.** {{appName}} takes no platform fee. When you donate, you pay only the tiny Grin network fee that goes to miners, not to us."
         ]
       },
-      "who-made-this": {
-        "question": "Who made {{appName}}?",
-        "answer": [
-          "{{appName}} is built by [Soapbox](https://soapbox.pub), an open-source team building tools for the Nostr ecosystem, in collaboration with the [World Liberty Congress](https://worldlibertycongress.org/)."
-        ]
-      },
       "censorship-resistance": {
         "question": "What does \"censorship-resistant\" mean here?",
         "answer": [