RFD 1035: Legacy model identifiers
Problem
Seven model identifiers remain in the code after the TRELLIS.2 move. A reader who sees them in a picker cannot tell them from the current models.
Decision
Keep the identifiers, and list them last in every picker. LEGACY_MODEL_IDS in src/library/aiModelsCatalog.js drives that order. Do not delete them, because saved tasks reference them.
See DETAILS.md for the seven identifiers and the two rules that still apply to two of them.