Method append_llm_response

atomic-agent/src/provenance/accumulator/append.rs:180–220

Append an LLM response node — the agent's final answer for the turn. Created at turn end from the agent's closing message: the stop payload's response field (`last_assistant_message`, `prompt_response`, …) or, failing that, the last assistant entry of the session transcript. This is the durable record of what the agent concluded*, complementing the tool-derived nodes that record what it did*. Re

(&mut self, text: &str, timestamp: i64)

    ///
    /// Returns the new node's ID.
    pub fn append_llm_response(&mut self, text: &str, timestamp: i64) -> String {
        let summary = truncate_prompt(text, 200);
        let mut node = GraphNode::new(self.next_id(), NodeKind::LlmResponse, timestamp, &summary);

        let stored: String = text.chars().take(MAX_RESPONSE_TEXT_LEN).collect();
        node.detail = Some(serde_json::json!({
            "response_text": stored,
            "text_length": text.len(),
        }));

        // Mark as classified so the Phase 3 consolidator doesn't touch it
        node.classified = true;
        node.confidence = Some(1.0);

        let node_id = node.id.clone();

        // Edge: goal --led_to-→ response (the answer serves the prompt)
        if let Some(goal) = &self.current_goal {
            self.edges.push(GraphEdge::new(
                goal.clone(),
                node_id.clone(),
                EdgeKind::LedTo,
            ));
            self.stats.edge_count += 1;
        }

        // Also chain from the previous node for temporal ordering
        if let Some(prev) = &self.last_node {
            if self.current_goal.as_ref() != Some(prev) {
                self.edges.push(GraphEdge::new(
                    prev.clone(),
                    node_id.clone(),
                    EdgeKind::LedTo,
                ));
                self.stats.edge_count += 1;
            }
        }

        self.push_node(node);
        node_id
    }

    /// Append a human gate node (permission requested).
    ///