high80%
PostgREST 14.5 nested INSERT fails with PGRST204 unless `?select=*,<child>(*)` is supplied
Embedded inserts return PGRST204 because the request omits the `select` return filter. When `Prefer: return=representation` is used without `select`, PostgREST 14.5 infers return columns from the JSON payload and resolves the relationship key as a column of the parent table, causing the schema-cache lookup to fail.