chore(landing): point analytics to OneQuery GA4 property

[lentil32]

One-Line Summary

Point the OneQuery landing site Google tag at the new OneQuery-only GA4 measurement stream.

User-Facing Changes

• OneQuery landing analytics now send events to measurement ID G-42E8B09EX6 instead of the previous Velen-associated ID.
• Existing pageview and CTA event wiring remains unchanged.

Why This Changed

The landing site was using the same GA measurement setup as Velen, which caused OneQuery landing traffic to appear in the Velen analytics property and made product-specific analysis harder. The new GA4 property and web stream separate OneQuery reporting at the property level.

How It Changed

• Updated apps/landing/src/shared/analytics/google-tag.ts to use the OneQuery web stream measurement ID.
• Kept the existing Partytown Google tag loading, Astro after-swap pageview handling, and custom CTA events intact.

Verification

• rtk bun install
• rtk bun run build from apps/landing
• rtk bun run format from the repository root
• rtk rg -n "G-TVPWK9V4TE" apps/landing/src apps/landing/dist/client returned no matches
• rtk rg -n "G-42E8B09EX6" apps/landing/src/shared/analytics/google-tag.ts apps/landing/dist/client/index.html
• Pre-push hook ran type-aware lint and reported 0 warnings and 0 errors

Video / Screenshot (Optional)

• N/A

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	onequery-landing	a90cf81	Commit Preview URL Branch Preview URL	Jun 04 2026, 12:32 PM