Refine sessionless design section and highlight 10x reduction in response times and quota usage

Author: robertpiosik

README.md

@@ -23,7 +23,11 @@
 
 ## Sessionless design
 
-**Without sessions, there is no context accumulation.** Instead of sending messages to the agent and increasing conversation complexity, you first select context files and then send lean markdown [prompts](#prompts). In effect, models spend less time _thinking_, **reducing response times and quota usage by 10x**.
+**Without sessions, there is no context accumulation.** Instead of messaging the agent, you first select context files, then send lean markdown [prompts](#prompts) with chatbots, API calls or headless CLI invocations.
+
+> [!IMPORTANT]
+>
+> Models focused on the task from the start spend less time _thinking_. **Reducing response times and quota usage by 10x**.
 
 > [!TIP]
 >