refactor: Split out LLMGenerationActions #1149
Description
This module generation.py is doing too much, with tangled responsibilities, ad-hoc hacks, and barely controlled state. Splitting it up, locking down state flows, adding types/tests, and centralizing ouar LLM invocation + post-processing logic will dramatically improve clarity, safety, and maintainability.
Originally posted by @Pouyanpi in #1145 (comment)
- add more content