Summary: PostHog AI now works across PostHog

Why It Matters: This change makes PostHog AI sound more integrated. It suggests AI is a core part of the whole PostHog product, not just one piece.

What Changed:

• The text "PostHog Ai works across the Product OS platform" changed to "PostHog AI works across PostHog".
• The number of companies that signed up today changed from 737 to 650.