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Diffstat (limited to 'apps/web/src/services/storage/migrations/AGENTS.md')
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diff --git a/apps/web/src/services/storage/migrations/AGENTS.md b/apps/web/src/services/storage/migrations/AGENTS.md new file mode 100644 index 00000000..5aed00a1 --- /dev/null +++ b/apps/web/src/services/storage/migrations/AGENTS.md @@ -0,0 +1,10 @@ +# Agents.md + +## Migration Data Policy + +Migrations are additive only. + +- Do not delete, rename, or replace persisted data in a migration. +- When a new storage shape is needed, add the new fields alongside the old fields. +- Runtime code may prefer or ignore old fields, but the migration must preserve them for future down migrations. +- If old data should ever be removed, that is a separate explicit cleanup task, not part of a version migration.
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