feat: restructure docs into store, marketing, builder, and config sections

contents/docs/marketing/coupons.md

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+---
+title: Coupons
+description: Smart discounts and promotions.
+---
+
+# Coupons
+
+Go beyond standard WooCommerce coupons.
+
+## Smart Features
+*   **Auto-Apply**: Apply coupons automatically when cart conditions are met.
+*   **Bulk Generation**: Generate thousands of unique codes for partners.
+*   **URL Coupons**: Create links that automatically apply a discount when clicked.

contents/docs/marketing/index.md

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+---
+title: Marketing Suite
+description: Grow your business with built-in tools.
+---
+
+# Marketing Suite
+
+WooNooW comes with a powerful suite of marketing tools to help you retain customers and increase sales.
+
+## Features
+
+*   **[Newsletter](/docs/marketing/newsletter)**: Create campaigns and manage subscribers directly from your dashboard.
+*   **[Coupons](/docs/marketing/coupons)**: Create smart coupons and automatic discounts.
+*   **[Wishlist](/docs/marketing/wishlist)**: Let customers save their favorite items for later.

contents/docs/marketing/newsletter.md

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+---
+title: Newsletter
+description: Manage subscribers and campaigns.
+---
+
+# Newsletter
+
+A complete email marketing solution built into your store.
+
+## Subscribers
+Automatically capture emails at checkout or via the footer form.
+*   **GDPR**: Includes double opt-in support.
+*   **Segmentation**: Tag subscribers based on purchase history.
+
+## Campaigns
+Send beautiful HTML emails to your list.
+1.  Go to **Marketing > Newsletter**.
+2.  Click **New Campaign**.
+3.  Use the Template Builder to design your email.
+4.  Schedule or send immediately.

contents/docs/marketing/wishlist.md

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+---
+title: Wishlist
+description: Let customers save products.
+---
+
+# Wishlist
+
+Enable the heart icon on your products.
+
+## How it works
+*   **Guest Support**: Guests can save items (stored in cookies/local storage).
+*   **Account Sync**: When guests log in, their wishlist is saved to their account.
+*   **Sharing**: Customers can share their wishlist via social media or email.