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

docs/features/shortcodes.mdx

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+---
+title: Shortcodes
+description: Available shortcodes in WooNooW
+date: 2024-01-31
+---
+
+## The Primary Shortcode
+
+WooNooW operates as a Single Page Application (SPA). To render the entire store application, you only need one shortcode:
+
+### `[woonoow_spa]`
+
+This shortcode initializes the SPA router and renders the appropriate view based on the URL (Shop, Product, Cart, Checkout, Account).
+
+**Usage:**
+Place this shortcode on your designated "Store" page.
+
+```text
+[woonoow_spa]
+```
+
+---
+
+## Legacy Shortcodes
+
+*Note: Previous versions utilize individual shortcodes (`[woonoow_shop]`, etc.). These are now consolidated into the single SPA entry point for better performance and routing state management.*