Function parse_reflection_response 

pub fn parse_reflection_response(
    response: &str,
    session_id: &str,
) -> Option<AgentReflection>

Parse a structured reflection from an LLM response.

Expects the format produced by build_reflection_prompt and intentionally fails closed if any of the core fields are missing. The runtime treats an unparsable reflection as non-durable so it does not enter session or long-term memory in a malformed shape.