Update the MiniMax H3 Director changelog (docs/minimax_h3_director.md)
with three bug-fix entries added since the last 0.4.14 changelog:
- Legacy Director prompt preservation (36b9b3a): pre-builder prompts
are now detected on load and migrated into a lossless Simple-prompt
state instead of being silently dropped.
- Serialized standard prompt (009cd47): emit() now writes the resolved
prompt back to the prompt widget so it round-trips through
widgets_values on save/load.
- Legacy widget order preserved (ed5d393): frame_rate moved to the
end of the required input list so pre-frame_rate saves keep their
positional order; build_guide coerces a stale non-numeric value.
Bump pyproject version 0.4.18 -> 0.4.19.
Darksidewalker
d4fec3f57b