feat: wired together graph execution and agent graph dispatch

src/graph/agent.rs

@@ -9,6 +9,7 @@ use super::state::StateManager;
 use super::types::AgentNode;
 use crate::config::RequestContext;
 use crate::function::supervisor::run_agent_for_graph;
+use crate::utils::dimmed_text;
 use anyhow::{Context, Result};
 use serde_json::Value;
 use std::time::Duration;
@@ -31,6 +32,14 @@ impl AgentNodeExecutor {
             .interpolate(&node.prompt)
             .with_context(|| format!("Failed to interpolate prompt for agent '{}'", node.agent))?;
 
+        eprintln!(
+            "{}",
+            dimmed_text(&format!("▸   spawning agent '{}' with prompt:", node.agent))
+        );
+        for line in indent_prompt(&prompt, 6) {
+            eprintln!("{}", dimmed_text(&line));
+        }
+
         let timeout_dur = Duration::from_secs(node.timeout.unwrap_or(DEFAULT_TIMEOUT_SECS));
 
         let output = timeout(
@@ -53,6 +62,21 @@ impl AgentNodeExecutor {
     }
 }
 
+fn indent_prompt(prompt: &str, prefix_spaces: usize) -> Vec<String> {
+    const MAX_LINES: usize = 12;
+    let pad = " ".repeat(prefix_spaces);
+    let mut out: Vec<String> = prompt
+        .lines()
+        .take(MAX_LINES)
+        .map(|line| format!("{pad}{line}"))
+        .collect();
+    let total = prompt.lines().count();
+    if total > MAX_LINES {
+        out.push(format!("{pad}... ({} more lines)", total - MAX_LINES));
+    }
+    out
+}
+
 /// Exposes the agent's output as `{{output}}` for template evaluation, then
 /// applies every key/template in `state_updates`. The temporary `output`
 /// state key is removed at the end so it doesn't leak into subsequent