migrate all activities, there should always be a step without a question

as last step.
	modified:   research/activity.yaml
	modified:   research/activity2.yaml
	modified:   research/activity4.yaml
	modified:   research/activity5.yaml
	modified:   research/activity6.yaml
	modified:   research/activity7.yaml

research/activity.yaml

@@ -71,3 +71,7 @@ sections:
             ai_feedback:
               tokens_for_ai: "Answer the user's clarifying questions and provide additional information in a friendly and engaging manner."
 
+      - step_id: "step_3"
+        title: "The end of AI"
+        content_blocks:
+          - "The end of AI."

research/activity2.yaml

@@ -285,3 +285,8 @@ sections:
               - "I see you have some questions. Let's address them."
             ai_feedback:
               tokens_for_ai: "Answer the user's clarifying questions and provide additional information in a friendly and engaging manner."
+
+      - step_id: "step_3"
+        title: "The End."
+        content_blocks:
+          - "The End."

research/activity4.yaml

@@ -359,3 +359,9 @@ sections:
               - "I see you have some questions. Let's answer them."
             ai_feedback:
               tokens_for_ai: "Answer the user's clarifying questions and provide additional information in a friendly and engaging manner."
+
+      - step_id: "step_3"
+        title: "The End."
+        content_blocks:
+          - "The End."
+

research/activity5.yaml

@@ -354,3 +354,8 @@ sections:
               - "I see you have some questions. Let's address them."
             ai_feedback:
               tokens_for_ai: "Answer the user's clarifying questions and provide additional information in a friendly and engaging manner."
+
+      - step_id: "step_3"
+        title: "The End."
+        content_blocks:
+          - "The End."

research/activity6.yaml

@@ -283,3 +283,8 @@ sections:
               - "I see you have some questions. Let's address them."
             ai_feedback:
               tokens_for_ai: "Answer the user's clarifying questions and provide additional information in a friendly and engaging manner."
+
+      - step_id: "step_3"
+        title: "The End."
+        content_blocks:
+          - "The End."

research/activity7.yaml

@@ -721,5 +721,7 @@ sections:
           - "Keep practicing what you've learned, stay curious, and continue to build your financial knowledge."
           - "We are proud of your dedication and hard work. Well done!"
 
-
-
+      - step_id: "step_3"
+        title: "The End."
+        content_blocks:
+          - "The End."