v1.0.4

Fixes generations coming out in the wrong language. The system prompt's language rule used Portuguese and German as illustrative examples, and at low reasoning effort models pattern-matched the named languages instead of applying the rule, so an English prompt could produce Portuguese or French copy. The rule now names no language. Measured on the production pipeline: 4/4 English for an English prompt (was ~1/3), 3/3 Portuguese for a Portuguese prompt (unchanged).