fix(#2632): remove /api/loose-ends endpoint; drop refreshLooseEnds (address argus/mara review)

Both old endpoints removed. refreshLooseEnds() call sites cleaned up;
lastLooseEnds stays as empty [] for reconcileAskBinds (no-op now that
the loose-ends source is gone).

frontend/packages/agent/src/app.js

@@ -839,23 +839,6 @@ window.marked = marked;
       renderTodos([]);
     }
   }
-  // Loose-ends: fetched silently (background only) for reconcileAskBinds.
-  // Not displayed as a pill; provides the question/reminder/approval data
-  // the inline ask-form wiring needs.
-  async function refreshLooseEnds() {
-    try {
-      const resp = await fetch('api/loose-ends');
-      if (!resp.ok) {
-        renderLooseEnds([]);
-        return;
-      }
-      const data = await resp.json();
-      renderLooseEnds(data.loose_ends || []);
-    } catch (err) {
-      console.warn('loose-ends fetch failed', err);
-      renderLooseEnds([]);
-    }
-  }
   /** Latest snapshot kept in module state so the pill click handler
    *  has fresh data to render into the panel without re-fetching. */
   let lastTodos = [];
@@ -933,15 +916,6 @@ window.marked = marked;
     return wrap;
   }
 
-  /** Loose-ends render: background-only (no pill). Keeps lastLooseEnds
-   *  fresh for reconcileAskBinds (inline ask-form wiring). */
-  function renderLooseEnds(threads) {
-    lastLooseEnds = threads;
-    // Wire inline answer forms into any `ask → operator` rows
-    // waiting on a broker-assigned question id.
-    reconcileAskBinds();
-  }
-
   /** Build the todos side-panel list. Each entry is a LooseEnd::Todo
    *  (subsystem, summary, source, age_seconds). */
   function buildTodosList(todos) {
@@ -1045,7 +1019,6 @@ window.marked = marked;
           });
           if (resp.ok) {
             status.textContent = 'answered ✓';
-            refreshLooseEnds();
           } else {
             status.textContent = 'failed: ' + (await resp.text());
           }
@@ -1342,10 +1315,7 @@ window.marked = marked;
       renderModelChip(s.model);
       renderEffortChip(s.effort);
       renderTokenUsage({ ctx: s.ctx_usage, cost: s.cost_usage });
-      // Open-threads: loose-ends (background, for reconcileAskBinds) and
+      // Todos pill: cold-load populate; turn_end refreshes via renderTodos.
-      // todos (displayed pill). Cold-load fetches both; turn_end refreshes
-      // them via the renderers below.
-      refreshLooseEnds();
       refreshTodos();
       // Skip the re-render if nothing structurally changed. The most
       // common case is `online` polling itself — without this guard, the
@@ -1477,11 +1447,7 @@ window.marked = marked;
               slot._askQuestion = c._body;
               d.appendChild(slot);
               pendingAskBinds.push(slot);
-              // Mid-turn refresh — the standard `turn_end` refresh
+              if (api.fromHistory) reconcileAskBinds();
-              // won't fire until the agent's turn finishes; we want
-              // the form to show up as soon as the ask lands.
-              if (!api.fromHistory) refreshLooseEnds();
-              else reconcileAskBinds();
             }
           }
           return d;
@@ -1510,15 +1476,6 @@ window.marked = marked;
       const sourceName = c.tool_use_id ? toolNameById.get(c.tool_use_id) : null;
       const isMessageBearing = sourceName === 'mcp__hyperhive__recv';
       // When an ask's tool_result lands the broker has just
-      // persisted the question with its assigned id. Refresh
-      // loose-ends so reconcileAskBinds finds the new entry and
-      // mounts the inline answer form under the rendered ask row.
-      // Skipped during history replay (the question's likely
-      // long-resolved; turn_end refresh on cold-load covers
-      // reconciliation).
-      if (sourceName === 'mcp__hyperhive__ask' && !api.fromHistory) {
-        refreshLooseEnds();
-      }
       const trimmed = txt.replace(/\s+/g, ' ').trim();
       const summaryBody = (() => {
         if (!trimmed) return '(empty)';
@@ -1738,8 +1695,6 @@ window.marked = marked;
             openTurnsFromHistory = Math.max(0, openTurnsFromHistory - 1);
           } else {
             setBannerActive(false); setState('idle');
-            // Likely answered/asked/scheduled something — refresh both.
-            refreshLooseEnds();
             refreshTodos();
           }
           const cls = ev.ok ? 'turn-end-ok' : 'turn-end-fail';

hive-agent/src/web_ui/mod.rs

@@ -115,7 +115,6 @@ pub async fn serve(
         .route("/api/effort", post(actions::post_set_effort))
         .route("/api/new-session", post(actions::post_new_session))
         .route("/api/logout", post(auth::post_logout))
-        .route("/api/loose-ends", get(stats::api_loose_ends))
         .route("/api/todos", get(stats::api_todos))
         .route("/api/stats", get(stats::api_stats))
         .route("/screen/ws", get(screen::screen_ws))

hive-agent/src/web_ui/stats.rs

@@ -1,11 +1,10 @@
 //! Stats + loose-ends + todos read endpoints.
 
 use axum::extract::State;
-use axum::http::StatusCode;
 use axum::response::{IntoResponse, Response};
 use serde::Deserialize;
 
-use super::{AppState, error_response};
+use super::AppState;
 
 #[derive(Deserialize)]
 pub(super) struct StatsQuery {
@@ -47,35 +46,6 @@ async fn fetch_reminder_stats(
     }
 }
 
-/// Proxy this agent's loose-ends list via the per-agent socket. The
-/// web UI surfaces the result as a collapsible section in the page
-/// so the operator can see at a glance what's pending against the
-/// agent (questions asked by it, peer questions targeting it,
-/// reminders it scheduled, approvals for the manager). Same data
-/// the `mcp__hyperhive__get_loose_ends` tool sees from inside the
-/// container.
-pub(super) async fn api_loose_ends(State(state): State<AppState>) -> Response {
-    match super::broker_request(
-        &state.socket,
-        &hive_core_agent_sock::Request::GetLooseEnds { agent: None },
-    )
-    .await
-    {
-        Ok(hive_core_agent_sock::Response::LooseEnds { loose_ends }) => {
-            axum::Json(serde_json::json!({ "loose_ends": loose_ends })).into_response()
-        }
-        Ok(hive_core_agent_sock::Response::Err { message }) => error_response(
-            StatusCode::INTERNAL_SERVER_ERROR,
-            &format!("get_loose_ends: {message}"),
-        ),
-        Ok(other) => error_response(
-            StatusCode::INTERNAL_SERVER_ERROR,
-            &format!("get_loose_ends: unexpected response: {other:?}"),
-        ),
-        Err(e) => super::broker_error_response(&e, "get_loose_ends"),
-    }
-}
-
 /// `GET /api/todos` — snapshot of this agent's local todos (loose-ends v2).
 ///
 /// Connects to the in-agent harness socket (`HIVE_AGENT_SOCKET`) and calls