Evergreen farms (pos)

Repository: evergreenpos_E-commerce_new (Frontend)
Key Modifications & Feature Enhancements:
Instant Visual Feedback on Swatch Clicks: Refactored

CartItemVariantSelector.tsx
so color focus rings shift immediately (0ms) upon user interaction rather than lagging behind network requests.
In-Place Optimistic Variant Swapping: Updated

Checkout.tsx
and

useCart.tsx
to update line items in place optimistically, matching by composite ID (${baseId}_${sku}) and preventing duplicate line items from appearing.
Debounced Secondary Checkout APIs: Added debouncing for loyalty points calculation (500ms) and referral quotes (400ms) in

Checkout.tsx
, preventing duplicate and aborted API requests during rapid updates.
Performance & API Caching:
Deduplicated Promo Rule Evaluation: Replaced repeated raw API calls in

useCartPromo.ts
with useQuery cached evaluation (staleTime: 5 mins).
Deduplicated Subcategory API Requests: Unified the query keys across

CategoryNavbar.tsx
and

MobileCategorySidebar.tsx
with a 15-minute staleTime, eliminating redundant HTTP calls when opening menus.
Attribute Resolution & UI Layout:
Updated

storefrontUtils.ts
useCartItemResolved to prioritize matched variant attributes over stale product defaults.
Refined responsive spacing, overflow constraints, and header layout in

Header.tsx
and

CategoryNavbar.tsx
.
Repository: evergreen_pos_be (Backend)
Bug Fixes & Technical Changes:
Fixed Mongoose CastError on Cart Modification: In

cart.service.js
(dltPrt), added checks with mongoose.Types.ObjectId.isValid(id) so non-ObjectId UUID customer/user IDs are queried without throwing CastErrors.
Precise Variant Line Pulling: Fixed MongoDB $pull condition to target the exact variant SKU (productId: { $in: searchIds }) when deleting/replacing a specific variant, while safely matching base product IDs using regex (^${lookupId}(_.*)?$) for whole-product removals.
Idempotent Deletion: Removed hard 400 errors when an item was already removed or modified in parallel, preventing sync race conditions with the storefront.

Repository: evergreen_pos_be (Backend)
Key Modifications & Feature Enhancements:
Comprehensive Variant Line Mapping: Refactored product transformation in

payment.service.js
so variant metadata (variantSku, variantTitle, variantAttributes, variantAttributeLabels) is preserved during order creation regardless of whether variantId is an explicit MongoDB ID or SKU-based.
Clean Email Variant Display: Enhanced EJS email templates (

paymentConfirmation.ejs
,

admin-order-alert.ejs
,

admin-order-notification.ejs
,

orderStatus.ejs
,

warehouse-pack-order-alert.ejs
) to display formatted variant labels (e.g. Color: Olive · Size: M) and removed SKU strings from customer and admin emails.
Bug Fixes:
Fixed an issue where variants without an explicit variantId field had their variantTitle and variantAttributes omitted from the stored order items.
Added fallback rendering for products with raw variantAttributes or size so variant details always appear in transaction receipts.
Repository: evergreenpos_E-commerce_new (Frontend)
Key Modifications & Feature Enhancements:
Instant Color Swatch Selection (0ms): Refactored

CartItemVariantSelector.tsx
so active selection rings shift immediately upon click without waiting for background API calls.
In-Place Optimistic Variant Swapping: Updated

Checkout.tsx
and

useCart.tsx
to replace existing cart items in place upon changing color/variant, eliminating duplicate cart rows.
Debounced Secondary Checkout APIs: Debounced loyalty points (500ms) and referral quotes (400ms) with request cancellation to prevent aborted request loops during rapid variant switching.