Replaces the previous server-cart implementation (which wrongly called
the customer-dashboard-only /businesses/{id}/cart* API) with the
documented guest-cart architecture:
- src/lib/guestCart.ts: storage key/cookie name, cookie attributes,
line shape, and encodeGuestCart() copied verbatim from AI_PROMPT.md
- CartProvider/CartButton: pure client state (localStorage + mirrored
cookie), no bearer auth, no businessId
- CartButton's "ادامه" builds the exact documented Continue URL,
branching on hasCustomerSessionCookie() to either
customer.<domain>/checkout/cart?guestCart=<encoded> or
.../login?redirect=<encoded checkout path>
- Auth cookie corrected to the real documented name
(meshkee_customer_access_token, possibly chunked) via a shared
reassembleChunkedCookie() helper used by both auth.ts (server) and
authUser.ts (client)
- ProductBuyPanel/product pages switched to the documented
GET .../store-items/by-product/{id} endpoint (getStoreItemByProduct)
- isInStock() treats stockQuantity === null as unlimited stock, not
out-of-stock, per spec
- AGENTS.md updated to describe this architecture and remove the
incorrect server-cart documentation
Manually verified in-browser: badge count, popup lines/qty/remove/
total all update correctly against injected guest-cart data; tsc,
eslint, and next build all pass clean.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
