Discussion: LangGraph → AINL migration experiences

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LangGraph → AINL: migration experiences

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If you've moved (or experimented with moving) orchestration from **LangGraph** (or similar) to **AINL**, share what worked and what didn't:

- What stayed in Python vs what you expressed in `.ainl`
- Token/cost or determinism wins (rough numbers welcome)
- Gaps or feature requests

See also: [`docs/migration/LANGGRAPH_MIGRATION_GUIDE.md`](https://github.com/sbhooley/ainativelang/blob/main/docs/migration/LANGGRAPH_MIGRATION_GUIDE.md).