[share] Small CrewAI event evidence sample from Assay

[Rul1an]

I wanted to share a small CrewAI-focused sample we just cut on the Assay side.

Instead of opening with a broad integration pitch, we started from CrewAI's local event-listener seam and kept the whole thing intentionally small:

• bounded BaseEventListener export
• tiny NDJSON artifact
• success, failure, and malformed cases
• mapping into Assay-shaped placeholder evidence without promoting CrewAI runtime semantics into Assay truth

Sample:

• https://github.com/Rul1an/assay/tree/main/examples/crewai-event-evidence

A couple of reasons we cut it this way:

• it felt more honest to prove one tiny handoff than to talk about a big adapter
• CrewAI already has a real event surface, so sample-first seemed like the right move
• it keeps the observed vs derived boundary very explicit

I am not assuming this belongs in crewAI-examples as-is.

The real question is smaller:
would you be open to a trimmed version of this as an example or integration pattern here, or is there another repo / event surface you would consider the better home for it?

Happy to reshape it if there is a more natural CrewAI-native way to present the same idea.