Remove Timestripe todos from site

The todos below track scrubbing the Timestripe origin out of the bootstrap. Once they are all done, the todos themselves are the only remaining place where Timestripe is mentioned, so they should be deleted rather than marked done.

Todos to delete

• Remove unused Timestripe blog covers
• Remove calls to undefined ym()
• Resolve the Root UI font leftover
• Rename "Sveleton Magazine" in sitemap
• Strip Timestripe mentions from docs
• Remove .playwright-mcp snapshots
• Clean up minor Timestripe leftovers
• This page

Tasks

• Wait until every todo with the Timestripe tag is done
• Delete their directories under src/routes/(demo)/todos/
• Grep src for "Timestripe" and "timestripe" one last time and confirm zero hits outside of node_modules