Legacy Code Refactoring Plan

Analyze this legacy {{language}} code and create a detailed refactoring plan: ``` {{code}} ``` Provide: 1) Code smell identification with severity ratings, 2) A prioritized refactoring sequence (what to change first and why), 3) Risk assessment for each change, 4) Suggested design patterns to apply, 5) The refactored code with comments explaining each improvement, 6) Test cases to verify behavior preservation.