[JLarky]

Summary

• show the Say To Me session ID on static parked pages
• use the same say-to-me(t3_<thread-id>) form as the ID button
• render it as plain text without a copy control

Validation

• pnpm exec vp fmt --check apps/server/src/http.ts
• git diff --check
• verified the rendered /park HTML on the 5477 dev server

The branch was rebased from the latest origin/main before publishing.