Refresh the outdated social preview and marketing images

[pythonlearner1025]

The images in packages/webapp/public/ are outdated and should be redrawn. Not urgent — filing so it is not forgotten.

They were committed as-is in #50, which tracked them for the first time. That PR deliberately preserved them byte-for-byte, because the goal was to stop a deploy from un-publishing the pages. Refreshing the artwork is the separate follow-up.

Files

File	Size	Used by
og.png	187 KB	og:image on all four public pages
hero.png	136 KB	the /landing page
apple-touch-icon.png	37 KB	iOS home-screen icon
favicon.ico	3.4 KB	browser tab

Where they are referenced

Every public page points og:image at the same asset:

<meta property="og:image" content="https://blitzos.com/og.png">
<meta name="twitter:card" content="summary_large_image">

That covers /landing, /terms, /privacy and /security. One file drives the preview card for all of them, so replacing og.png updates every page at once. If the pages should preview differently, that needs per-page assets and a og:image change in each file.

Notes for whoever picks this up

• twitter:card is summary_large_image, so og.png wants a 1.91:1 ratio. 1200x630 is the usual size.
• Add any new image to packages/webapp/published-assets.json. The deploy check and test/published-assets.test.ts both read that manifest, and an unlisted file is not guarded.
• Removing a file from the manifest is a deliberate un-publishing, so drop the entry and the file together.
• Social platforms cache preview images aggressively. Expect to re-scrape after the change lands.

🤖 Generated with Claude Code