Can I vibe code Loop Returns?

Build a full-stack Return and Exchange Portal for a Shopify store using Next.js 14 (App Router), TypeScript, Tailwind CSS, Prisma ORM, and EasyPost SDK.

CORE ARCHITECTURE & DATA MODEL:
1. Database Schema (Prisma):
   - MerchantConfig: shopifyDomain, accessToken, autoApprovePolicy (JSON), customBonusCreditPercent (Float, e.g. 10.0 for 10% extra credit), dynamicReturnFee (Float).
   - ReturnRequest: id, orderId, shopifyOrderName, customerEmail, status (PENDING, APPROVED, REJECTED, EXCHANGED, COMPLETED), returnReason, items (JSON array of lineItemIds and quantities), returnShippingLabelUrl, trackingNumber, exchangeOrderId, createdAt.
   - ReturnPolicyRule: id, condition (e.g. "item.category == 'final-sale'"), action (REJECT, CHARGE_FEE, RESTOCK_ONLY).

2. SHOPIFY INTEGRATION (GraphQL Admin API 2024-04):
   - Customer Portal Auth: Customer enters Order Number (#1001) and Email/Zip Code. Fetch order details using Shopify GraphQL `orders` query.
   - Return API: Execute native `returnCreate` mutation when a return is initiated.
   - Exchange Flow: If customer selects an exchange item, create a new Shopify order or draft order using `draftOrderCreate` + `draftOrderComplete`. Apply any extra store credit incentive (Bonus Credit) as a discount line item.
   - Refund Flow: Support partial or full refunds via Shopify `refundCreate` API, accounting for restock fees and shipping fees.

3. CARRIER LABEL GENERATION (EasyPost API):
   - Upon return approval (auto or manual), call EasyPost API (`easypost.Shipment.create`) specifying return flag `is_return: true`.
   - Rate shop between USPS, UPS, and FedEx based on package weight and dimensions.
   - Generate a printable PDF return shipping label and store the public URL and tracking number in `ReturnRequest`.

4. CUSTOMER INTERFACE (Tailwind / React):
   - Step 1: Order lookup by Order ID and Email.
   - Step 2: Select return items, select reason (Size too small, Defective, Changed mind), select outcome (Refund to original payment, Exchange for variant, Store Credit with +10% bonus).
   - Step 3: If Exchange is chosen, open an inline modal displaying eligible variant replacements or catalog search.
   - Step 4: Summary screen displaying return shipping fee breakdown, printable label, and step-by-step drop-off instructions.

5. MERCHANT DASHBOARD (App Bridge / Admin UI):
   - Table of all ReturnRequests filtered by status.
   - Ability to manually Approve, Reject, or Mark Received.
   - Configuration panel to tweak Return Rules (e.g., return window days, restocking fee, store credit bonus percentage).

6. FAILURE MODES & OUT OF SCOPE:
   - Handle invalid order lookup gracefully.
   - Handle EasyPost label creation failure by logging errors and falling back to manual approval queue.
   - Out of scope: Physical Return Bars integration, cross-border customs tax duty calculation, physical warehouse scanner UI.

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