refactor: Migrate documentation content, rebuild UI components, and update core architecture.

docs/marketing/coupons.mdx

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+---
+title: Coupons
+description: Create discount codes to boost sales and reward customers.
+---
+
+
+
+Coupons are a powerful way to run sales, recover abandoned carts, and reward loyalty. WooNooW provides a flexible coupon system compatible with standard WooCommerce logic.
+
+![Coupons List](/images/docs/marketing/coupons-list.png)
+
+## Managing Coupons
+
+Navigate to **Marketing > Coupons** to see all active and expired discount codes.
+The list view shows:
+*   **Code**: The text customers enter at checkout.
+*   **Type**: e.g., Percentage or Fixed Amount.
+*   **Amount**: The value of the discount.
+*   **Usage**: How many times the coupon has been used compared to its limit.
+
+## Applying Coupons
+
+### 1. Manual Entry
+Customers can enter the code in the "Coupon Code" field on the Cart or Checkout page.
+
+### 2. Via URL (Auto-Apply)
+You can send customers a direct link that automatically applies the coupon and adds it to their session.
+Format: `https://yourstore.com/shop?coupon=CODE` (or `?apply_coupon=CODE`)
+
+Example: `https://example.com/shop?coupon=SUMMER2026`
+
+> [!TIP]
+> This is perfect for [Newsletter Campaigns](/docs/marketing/newsletter). Use this link in your email buttons (e.g., "Shop Now & Save 20%") to boost conversion rates.
+
+## Creating a Coupon
+
+Click **New Coupon** to create a promotion.
+
+![Create Coupon](/images/docs/marketing/coupon-create.png)
+
+### General Settings
+1.  **Code**: (Required) Make it memorable (e.g., `SUMMER2026`).
+2.  **Description**: Internal note about the campaign.
+3.  **Discount Type**:
+    *   **Percentage**: Takes a % off the total cart (e.g., 20%).
+    *   **Fixed Cart Discount**: Removes a specific amount from the whole cart (e.g., $10 off).
+    *   **Fixed Product Discount**: Disounts specific items only.
+4.  **Expiry Date**: Automatically disable the coupon after this date.
+
+
+### Restrictions & Limits
+Use the tabs on the left to add rules:
+*   **Usage Limits**:
+    *   **Per Coupon**: Total number of times this code can be used.
+    *   **Per User**: Limit how many times a single customer can use it.
+*   **Minimum/Maximum Spend**: Define the order value range for the coupon to be valid.
+*   **Conditions**:
+    *   **Individual Use**: Prevent using this coupon with other offers.
+    *   **Exclude Sale Items**: Do not apply discount if items are already on sale.
+    *   **Product/Category Restrictions**: Whitelist or blacklist specific items or categories.