docs: enhance README with content feed details

- Added dynamic content feeds description
- Updated key capabilities section

Author: fulleni

README.md

@@ -16,6 +16,15 @@ management dashboard](https://github.com/headlines-toolkit/ht-dashboard).
 
 ## ✨ Key Capabilities
 
+*   💡 **Intelligent & Dynamic Content Feeds:** Deliver a uniquely tailored content
+    experience. `ht_api` now intelligently injects relevant content—such as
+    targeted advertisements, timely engagement prompts (like "Rate our App" or
+    "Upgrade to Premium"), and smart content suggestions (like "Trending
+    Categories" or "Sources to Follow")—directly into your users' primary news
+    feeds. This dynamic system enhances user engagement, promotes content
+    discovery, and opens new avenues for monetization, all configurable to
+    match your application's strategy and user segments.
+
 *   🔒 **Effortless User Authentication:** Provide secure and seamless user access
     with flexible flows including passwordless sign-in, anonymous access, and
     the ability to easily link anonymous accounts to permanent ones. Focus on