enterprise: add social card meta tags to share pages

- Add og:image and twitter:image meta tags for better social sharing
- Generate dynamic social card URLs with session title, models, and version
- Include description meta tag for search engines

Author: thdxr

bun.lock

@@ -20,6 +20,7 @@
     "@solidjs/meta": "catalog:",
     "hono": "catalog:",
     "hono-openapi": "catalog:",
+    "js-base64": "3.7.7",
     "luxon": "catalog:",
     "nitro": "3.0.1-alpha.1",
     "solid-js": "catalog:",