1. User initiates the 'day1-onboarding' skill.
2. The agent presents a table of available blocks and asks the user where they want to start.
3. Based on the user's selection, the agent loads the corresponding reference file.
4. The agent executes Phase A: reads the EXPLAIN section, explains the functionality, reads the EXECUTE section, and prompts the user to execute the code, then stops.
5. User executes the code and returns with '완료' or '다음'.
6. The agent executes Phase B: reads the QUIZ section, presents a quiz to the user, provides feedback, and asks if the user wants to proceed to the next block.
7. The process repeats for each block until the onboarding is complete.
8. The agent shows a summary diagram after Block 3.