Read against Bazaar's own docs (wp-json of developers.cafebazaar.ir):
both validation URLs were wrong, so no real purchase could ever verify.
In-app is now api/validate/<pkg>/inapp/<sku>/purchases/<token>/, and
subscriptions add the missing /purchases/ and judge validUntil, since
that response has no purchaseState.
Only 404 means "not purchased"; 401/403/5xx now raise 503 so our own
key or quota trouble cannot mark a paid order failed. The client token
is URL-quoted so it cannot steer the request to another API path.
BAZAAR_PISHKHAN_API_SECRET (the documented new method, a static header
token with no OAuth) takes precedence when set; /api/health gains
integrations.bazaar. Not yet exercised by a real purchase.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>