* fix(engine): classify first-person agent experiences as 'experience' fact type
The extraction prompt defined "assistant" too narrowly as only "interactions
with assistant (requests, recommendations)", causing the LLM to classify
first-person agent actions (code changes, debugging, discoveries) as "world".
Broadened the fact_type definition in the prompt and Pydantic model descriptions
to cover all first-person actions, experiences, and observations by the speaker.
* style: fix line length in fact_extraction.py
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