feat: implement micro-learning generation service and UI components for interactive topic-based learning

src/hooks/useMicroLearnings.js

@@ -1,4 +1,4 @@
-import { getOrGenerateMicroLearning, regenerateMicroLearning, getExistingTypes } from '../lib/microLearningService';
+import { getOrGenerateMicroLearning, regenerateMicroLearning } from '../lib/microLearningService';
 
 export function useMicroLearnings() {
   /**
@@ -16,13 +16,5 @@ export function useMicroLearnings() {
     return regenerateMicroLearning(topicId, type);
   };
 
-  /**
-   * Check which micro learning types already exist for a given topic.
-   * Returns { concept_explainer: true, scenario_quiz: false, ... }
-   */
-  const checkExistingTypes = async (topicId) => {
-    return getExistingTypes(topicId);
-  };
-
-  return { getOrGenerate, regenerate, checkExistingTypes };
+  return { getOrGenerate, regenerate };
 }