feat: add image for ai model dropdown

Author: devvaannsh

docs/03-ai.md

@@ -99,11 +99,11 @@ Click the **camera button** to take a screenshot and attach it. The dropdown let
 
 The chat header shows which model is answering you. Hover over the panel and the model name appears on the left. Click it to pick a different one.
 
-<!-- TODO: PLUTO - add image here showing the model dropdown in the chat header -->
+![Model dropdown in the chat header](./images/pro/ai-model-dropdown.png "Model dropdown in the chat header")
 
 The dropdown lists:
 
-- **Default**: lets Claude Code pick. The row shows which model that is right now, for example *Currently Opus*.
+- **Default**: lets Claude Code pick. The row shows which model that is right now, for example *Currently Fable*.
 - The models your provider offers, such as **Fable**, **Opus**, **Sonnet**, and **Haiku**. Fable appears only on plans that include it.
 
 You can switch models in the middle of a chat. The new model takes over from your next message and keeps the conversation history.