docs: add missing documentation for new features (checkout auto-registration, visual builder sections, appearance toggles, software & subscription guides)

contents/docs/configuration/modules/index.mdx

@@ -22,9 +22,19 @@ Navigate to **Settings > Modules** to manage these components.
 - **Subscriptions**: Enable recurring payments and subscription products.
 - **Pre-Orders**: Allow customers to order products before they are available.
 
-### Developer
-- **Custom CSS/JS**: Inject custom code without editing theme files.
-- **Beta Features**: Early access to experimental features (use with caution).
+### Sales
+- **Licensing**: Sell software licenses with activation limits, expiration dates, and domain validation. Required for Software Distribution.
+- **Software Distribution**: Distribute software updates with version tracking, changelogs, and automatic update checking. Works with WordPress plugins/themes or any software type. *Requires Licensing module.*
+
+## Module Dependencies
+
+Some modules depend on others:
+
+| Module | Requires |
+|--------|----------|
+| Software Distribution | Licensing |
+
+If you try to enable a module without its dependencies, you'll be prompted to enable the required modules first.
 
 ## How to Enable/Disable
 1. Find the module card in the list.