Add sponsor checkout and Afterpack website placement

[filiksyos]

Summary

• Website reverse uses the low-key Afterpack spot with its official locally hosted logo; codebase retains CodeRabbit.
• Original Discord footer preserved. A low-key 'Advertise your website' / 'Claim spot' card links to /sponsor directly below example repositories/websites; no sponsor links beside the result ads.
• Afterpack matches CodeRabbit’s embedded-ad styling, uses the official compact logo, requested two-line copy and 'Try free'.
• Canonical /sponsor page, permanent /partner redirect, official local sponsor favicons, requested headline and lower contact.
• Monthly USD placements: codebase $2,000, website $2,000, README $200, all three $4,200. Month-specific CTA and recurring billing remain explicit.
• Immutable server-owned Stripe price mapping, strict input validation, retry idempotency, safe redirects/diagnostics, and manual ad placement. Removed unnecessary Prices-read preflight.
• Existing signed Stripe/Supabase sync plus configured hourly owner notifications. No ad auto-publication; no payment claim based on redirect query.
• Premium cancellation cannot cancel sponsor or mixed subscriptions.
• Previous-calendar-month audience is server-only and cached hourly, displayed as '35K visitors last month', with methodology in tooltip. 250K+ lifetime remains the owner's historical figure.

Approved database change

Installed migration 20261008080556_server_only_sponsorship_audience. SECURITY INVOKER, fixed pg_catalog search path/UTC, no table grants. service_role can execute; actual anon/authenticated execution both fail permission denied. Service-role query verified September35,087. No unrelated PR168 search changes.

Verification

• 21 sponsorship tests and 21 existing library tests passed; TypeScript, targeted lint, production webpack build passed.
• Prior exact-head CI and Vercel deployments passed; latest cache/documentation commit is checked below.
• Live Stripe prices/catalog and direct hosted Checkout creation verified without payment. App-hosted Checkout success remains unverified because preview requires authentication; original swallowed error cause was not proven. No real charge completed.
• RPC installed/permissions/data verified; public production UI and notification after a legitimately paid session remain operational verification steps.

Still draft: no merge performed.

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Project	Deployment	Actions	Updated
gitreverse	Ready	Preview	Oct 8, 2026 8:26am UTC

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