dashboard: GC orphan approvals on render (agent state dir missing)

hive-c0re/src/dashboard.rs

@@ -58,7 +58,10 @@ async fn index(headers: HeaderMap, State(state): State<AppState>) -> Html<String
     let hostname = host.split(':').next().unwrap_or(host).to_owned();
 
     let containers = lifecycle::list().await.unwrap_or_default();
-    let approvals = state.coord.approvals.pending().unwrap_or_default();
+    let approvals = gc_orphans(
+        &state.coord,
+        state.coord.approvals.pending().unwrap_or_default(),
+    );
     let approvals_html = render_approvals(&approvals).await;
 
     Html(format!(
@@ -156,6 +159,26 @@ async fn render_approvals(approvals: &[Approval]) -> String {
     out
 }
 
+/// Filter out approvals whose agent state dir was wiped out from under us
+/// (e.g. by a test script's cleanup). Marks them failed so they fall out of
+/// `pending` on next render.
+fn gc_orphans(coord: &Coordinator, approvals: Vec<Approval>) -> Vec<Approval> {
+    approvals
+        .into_iter()
+        .filter(|a| {
+            if Coordinator::agent_proposed_dir(&a.agent).exists() {
+                true
+            } else {
+                let _ = coord
+                    .approvals
+                    .mark_failed(a.id, "agent state dir missing");
+                tracing::info!(id = a.id, agent = %a.agent, "auto-failed orphan approval");
+                false
+            }
+        })
+        .collect()
+}
+
 async fn approval_diff(agent: &str, commit_ref: &str) -> String {
     let proposed = Coordinator::agent_proposed_dir(agent);
     if !proposed.exists() {