Missed AOTC recovery — did you leave up to $2,500/year of education credits unclaimed? Per-year screen across the OPEN 1040-X amendment window (TY2023–2025): exact §25A credit math (100% of first $2k + 25% of next $2k), MAGI phaseouts, 4-year/half-time/MFS eligibility gates, 40% refundable portion (pays even at $0 tax), 529-coordination and LLC-vs-AOTC traps. Deterministic, statute-cited, no LLM.

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