Add changelog entries for recent Docs product features

fern/products/docs/pages/changelog/2025-11-02.mdx

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+## Navbar dropdown menus
+
+Group related links in your navbar with new dropdown menus. Organize resources, tools, or external links under a single button to keep your header clean.
+
+```yaml title="docs.yml"
+navbar-links:
+  - type: dropdown
+    text: Resources  # dropdown button text
+    icon: fa-solid fa-seedling  # optional icon
+    links:
+      - text: Plant database  # link display text
+        href: https://example.com/plants  # destination URL
+        icon: fa-regular fa-leaf  # optional icon
+      - text: Growing guides
+        href: https://example.com/guides
+```
+
+Learn more in the [navbar links configuration documentation](/learn/docs/configuration/what-is-docs-yml#navbar-links-configuration).
+
+## API Explorer direct requests
+
+You can now send API Explorer requests directly to your API instead of through Fern's proxy. This is useful for testing Cross-Origin Resource Sharing (CORS) configuration and debugging authentication flows.
+
+```yaml title="docs.yml"
+settings:
+  disable-explorer-proxy: true
+```
+
+<Warning>
+Your API must have CORS enabled to allow requests from the documentation domain.
+</Warning>
+
+Learn more in the [docs.yml reference documentation](/learn/docs/configuration/what-is-docs-yml#settingsdisable-explorer-proxy).

fern/products/docs/pages/changelog/2025-11-03.mdx

@@ -1,3 +1,26 @@
+## Custom icons across your navigation
+
+You can now use your own image files as icons throughout your `docs.yml` navigation config, including for [navbar link](/learn/docs/configuration/what-is-docs-yml#navbar-links-configuration), [section, page](/learn/docs/configuration/navigation#sidebar-icons), and [product](/learn/docs/configuration/products#add-your-product-configuration) icons.
+
+Icons now support three formats:
+- **Font Awesome icons**: Use icon names like `fa-solid fa-seedling` or `fa-regular fa-leaf`. Pro and Brand icons from Font Awesome are supported.
+- **Custom image files**: Use relative paths to custom image files (e.g., `./assets/icons/plant-icon.svg`). Paths are relative to the `docs.yml` file.
+- **Inline SVG**: Provide an SVG string wrapped in quotes.
+
+```yaml Sidebar icons in docs.yml
+navigation:
+  - section: Home
+    icon: fa-regular fa-home  # Font Awesome icon
+    contents:
+      - page: Introduction
+        icon: ./assets/icons/intro-icon.svg  # Custom image file
+        path: ./pages/intro.mdx
+      - page: Custom Features
+        icon: "<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'><path d='M12 2L2 7v10c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V7l-10-5z'/></svg>"  # Inline SVG
+        path: ./pages/custom.mdx
+  - api: API Reference
+    icon: fa-regular fa-puzzle
+```
 ## External product links
 
 You can now configure products to link to external URLs (separate applications, third-party documentation, or other external resources) instead of documentation within your site.