Pricing parity: GBP and EUR for Cap Pro

[richiemcilroy]

Summary

Cap Pro now has pricing parity across USD, GBP and EUR: 12/mo and 98/yr in all three currencies, same digits, different symbol.

The Stripe side is already live: the existing production monthly and yearly prices carry gbp and eur currency_options, so Stripe Checkout automatically presents the visitor's local currency by IP. No new price IDs, so existing subscriptions, seat updates and webhooks are unaffected. Verified against production with rendered checkout pages (GBP 12.00/mo and GBP 98.00/yr from a UK IP) and the eurozone path via Stripe's location simulation in test mode.

This PR is the display layer:

• New apps/web/utils/currency.ts with a country-to-currency map that mirrors Stripe Checkout's own IP localization (GBP for UK and crown dependencies, EUR for eurozone countries and territories, USD otherwise, including non-euro EU countries like Sweden and Poland which Checkout also bills in USD).
• New public GET /api/currency endpoint reading x-vercel-ip-country, force-dynamic with private, no-store caching, plus a ?country=XX override outside production for testing.
• New useCurrency() hook (SSR-safe, USD first paint, module-level request cache).
• Pre-purchase surfaces show the visitor's presentment currency: homepage/pricing ProCard, ComparePlans Pro row, UpgradeModal, onboarding InviteTeamPage, analytics upsell.
• Post-purchase surfaces (BillingSummaryCard, SeatManagementCard) now format amounts in the subscription's actual Stripe currency instead of a hardcoded dollar sign; the seat proration line goes from "$12.00 GBP" style to a properly formatted amount.
• Desktop upgrade screen fetches the currency from the web server and swaps the symbol on the Cap Pro card only, falling back silently to USD offline.
• Support AI pricing context updated to explain parity pricing and automatic currency selection.

Deliberately unchanged: Commercial License ($29/$58, separate license server), developer credits, SEO marketing pages and schema.org JSON-LD (static content stays USD).

Testing

• 14 new unit tests for the currency utilities, including a parity invariant (identical digits in all three currencies).
• Full web unit suite: 1520 passed, 1 pre-existing failure (slack-app-manifest, reproduces on clean main).
• tsc -b apps/web apps/desktop clean.

🤖 Generated with Claude Code

Greptile Summary

Cap Pro pricing displays are localized to USD, GBP, or EUR while post-purchase billing surfaces use the subscription’s actual Stripe currency.

• Adds a public Effect-based currency endpoint, shared currency utilities, and an SSR-safe client hook.
• Updates web and desktop purchase surfaces to show localized symbols.
• Correctly replaces the previously ad-hoc route handler with the repository-standard HttpApi and apiToHandler pattern.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains; the previously reported API-route architecture violation has been fixed.

Important Files Changed

Filename	Overview
apps/web/app/api/currency/route.ts	Implements geographic currency resolution using the required Effect HttpApi builder and apiToHandler route pattern, resolving the previous review finding.
apps/web/utils/currency.ts	Defines supported currencies, country mappings, symbols, and resilient amount formatting.
apps/web/hooks/useCurrency.ts	Provides an SSR-safe USD initial state and shared client-side request for geographic currency resolution.
apps/desktop/src/utils/currency.ts	Fetches the presentment currency for the desktop upgrade screen with a silent USD fallback.
apps/web/app/(org)/dashboard/settings/organization/components/BillingSummaryCard.tsx	Formats recurring billing amounts using the subscription currency rather than a hardcoded dollar sign.

_{Reviews (2): Last reviewed commit: "refactor(web): build /api/currency with ..." | Re-trigger Greptile}

Context used:

• Knowledge Base — Web App (apps/web)
• Knowledge Base — Desktop Frontend (apps/desktop/src)

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[richiemcilroy]

hey @greptileai, please re-review the PR