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Design an AI system for automated code migration (e.g. Python 2→3, framework upgrade, language port).

Code migration is a high-value agentic task with an unforgiving correctness bar: the migrated code must still work. The signal is grounding in the real repo, transforming in verifiable chunks, and gating on tests, never one giant LLM rewrite.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Code migration is a high-value agentic task with an unforgiving correctness bar: the migrated code must still work. The signal is grounding in the real repo, transforming in verifiable chunks, and gating on tests, never one giant LLM rewrite.

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