skills/stable-memory/SKILL.md:34 — "Altering the type of a persistent field (e.g., Nat to Int, or renaming a record field) will trap on upgrade and data is unrecoverable. Only ADD new optional fields. Never remove or rename existing ones."skills/migrating-motoko/SKILL.md:22-27 — implicit migration (no code needed) permits removing actor fields and widening Nat -> Int.skills/migrating-motoko/SKILL.md:30-34 — renaming fields and changing a field's type are supported via explicit migration (also skills/migrating-motoko-enhanced/SKILL.md:145-163).skills/migrating-motoko/SKILL.md:77 — "If the migration traps, the upgrade is aborted and the canister stays on the old version" — i.e. not "unrecoverable".
stable-memory's blanket rules would scare an agent away from valid, documented migrations.
skills/stable-memory/SKILL.md:34— "Altering the type of a persistent field (e.g.,NattoInt, or renaming a record field) will trap on upgrade and data is unrecoverable. Only ADD new optional fields. Never remove or rename existing ones."skills/migrating-motoko/SKILL.md:22-27— implicit migration (no code needed) permits removing actor fields and wideningNat->Int.skills/migrating-motoko/SKILL.md:30-34— renaming fields and changing a field's type are supported via explicit migration (alsoskills/migrating-motoko-enhanced/SKILL.md:145-163).skills/migrating-motoko/SKILL.md:77— "If the migration traps, the upgrade is aborted and the canister stays on the old version" — i.e. not "unrecoverable".stable-memory's blanket rules would scare an agent away from valid, documented migrations.