feat(chat): add conversation selection and enhance message rendering

- Add currentConversationId prop to ChatContainer for loading selected conversations
- Implement logic to load messages when conversation is selected and clear when deselected
- Improve user message rendering with proper whitespace handling
- Enhance MarkdownRenderer with content normalization and adjusted spacing for better readability
- Add paragraph styling to markdown output for improved layout

This enables users to switch between conversations seamlessly and provides cleaner message display.

lib/ollama.ts

@@ -91,7 +91,9 @@ export async function ensureModelExists(
       } else if (chunk.status === "success") {
         console.log(`\n✅ Modelo ${modelName} baixado com sucesso!`);
         if (description) {
-          console.log(`🎯 ${description.replace("será usado", "agora funciona")}`);
+          console.log(
+            `🎯 ${description.replace("será usado", "agora funciona")}`
+          );
         }
         break;
       }