Fix clippy type_complexity lints with OnNodeCallback type alias

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/crates/fabro-cli/src/commands/run/detached.rs

@@ -20,14 +20,13 @@ pub(crate) async fn execute(run_dir: PathBuf, launcher_path: PathBuf, resume: bo
     });
 
     let cli_settings = cli_config::load_cli_settings(None)?;
-    let on_node: Option<Arc<dyn Fn(&str) + Send + Sync>> =
-        RunRecord::load(&run_dir).ok().map(|record| {
-            let short_id = super::short_run_id(&record.run_id).to_string();
-            fabro_proctitle::set(&format!("fabro: {short_id}"));
-            Arc::new(move |node_id: &str| {
-                fabro_proctitle::set(&format!("fabro: {short_id} {node_id}"));
-            }) as Arc<dyn Fn(&str) + Send + Sync>
-        });
+    let on_node: fabro_workflows::OnNodeCallback = RunRecord::load(&run_dir).ok().map(|record| {
+        let short_id = super::short_run_id(&record.run_id).to_string();
+        fabro_proctitle::set(&format!("fabro: {short_id}"));
+        Arc::new(move |node_id: &str| {
+            fabro_proctitle::set(&format!("fabro: {short_id} {node_id}"));
+        }) as Arc<dyn Fn(&str) + Send + Sync>
+    });
 
     let github_app = shared::github::build_github_app_credentials(cli_settings.app_id());
     let git_author = GitAuthor::from_options(

lib/crates/fabro-workflows/src/lib.rs

@@ -1,6 +1,11 @@
+use std::sync::Arc;
+
 use fabro_retro::retro::CompletedStage;
 use serde::de::DeserializeOwned;
 
+/// Callback invoked when a workflow node starts executing.
+pub type OnNodeCallback = Option<Arc<dyn Fn(&str) + Send + Sync>>;
+
 /// Convert a Duration's milliseconds to u64, saturating on overflow.
 pub(crate) fn millis_u64(d: std::time::Duration) -> u64 {
     u64::try_from(d.as_millis()).unwrap_or(u64::MAX)

lib/crates/fabro-workflows/src/lifecycle/mod.rs

@@ -61,7 +61,7 @@ pub(crate) struct WorkflowLifecycle {
     disk: DiskLifecycle,
     git: GitLifecycle,
     artifact: ArtifactLifecycle,
-    on_node: Option<Arc<dyn Fn(&str) + Send + Sync>>,
+    on_node: crate::OnNodeCallback,
     /// Set in on_edge_selected when loop_restart approved; read+cleared by EventLifecycle::on_run_start
     restarted_from: Arc<Mutex<Option<(String, String)>>>,
     /// Shared git checkpoint result (written by git, read by event)
@@ -85,7 +85,7 @@ impl WorkflowLifecycle {
         run_dir: &PathBuf,
         run_options: &Arc<RunOptions>,
         is_resume: bool,
-        on_node: Option<Arc<dyn Fn(&str) + Send + Sync>>,
+        on_node: crate::OnNodeCallback,
     ) -> Self {
         let runtime_state = RuntimeState::new(run_dir);
         let restarted_from: Arc<Mutex<Option<(String, String)>>> = Arc::new(Mutex::new(None));

lib/crates/fabro-workflows/src/operations/start.rs

@@ -42,7 +42,7 @@ struct RunSession {
     sandbox: SandboxSpec,
     llm: LlmSpec,
     interviewer: Arc<dyn Interviewer>,
-    on_node: Option<Arc<dyn Fn(&str) + Send + Sync>>,
+    on_node: crate::OnNodeCallback,
     lifecycle: LifecycleOptions,
     hooks: fabro_hooks::HookConfig,
     sandbox_env: SandboxEnvSpec,
@@ -67,7 +67,7 @@ pub struct StartServices {
     pub interviewer: Arc<dyn Interviewer>,
     pub git_author: GitAuthor,
     pub github_app: Option<fabro_github::GitHubAppCredentials>,
-    pub on_node: Option<Arc<dyn Fn(&str) + Send + Sync>>,
+    pub on_node: crate::OnNodeCallback,
     pub registry_override: Option<Arc<HandlerRegistry>>,
 }
 

lib/crates/fabro-workflows/src/pipeline/types.rs

@@ -251,7 +251,7 @@ pub struct Initialized {
     pub emitter: Arc<EventEmitter>,
     pub sandbox: Arc<dyn Sandbox>,
     pub registry: Arc<HandlerRegistry>,
-    pub on_node: Option<Arc<dyn Fn(&str) + Send + Sync>>,
+    pub on_node: crate::OnNodeCallback,
     pub hook_runner: Option<Arc<HookRunner>>,
     pub env: HashMap<String, String>,
     pub dry_run: bool,