mischief: tighten the detail page's live poll and drop dead state

The who-page poll now keeps the location line honest both ways (a mark
that came back to town stops showing its old expedition) and stops
polling once the adventurer leaves the board. Also collapses a redundant
branch in ResolveMischiefOrder and removes the always-false whoPage.Stale.

internal/storage/mischief.go

@@ -117,18 +117,17 @@ func ResolveMischiefOrder(guid, status, detail string) (MischiefOrder, error) {
 		return MischiefOrder{}, fmt.Errorf("mischief: bad verdict %q", status)
 	}
 	now := nowUnix()
-	res, err := Get().Exec(
+	if _, err := Get().Exec(
 		`UPDATE mischief_orders SET status = ?, detail = ?, updated_at = ?
 		  WHERE guid = ? AND status = ?`,
 		status, detail, now, guid, MischiefPending,
-	)
-	if err != nil {
+	); err != nil {
 		return MischiefOrder{}, fmt.Errorf("mischief: resolve order: %w", err)
 	}
-	if n, _ := res.RowsAffected(); n == 0 {
-		// Either it doesn't exist or it's already terminal. Tell the caller which.
-		return MischiefOrderByGUID(guid)
-	}
+	// Whether the update moved a pending order or matched nothing (missing, or
+	// already terminal from an earlier verdict), the current row is the
+	// authoritative answer — reading it back is the single path either way, and
+	// MischiefOrderByGUID turns a missing row into ErrNoSuchOrder for the caller.
 	return MischiefOrderByGUID(guid)
 }
 

internal/web/templates/who.html

@@ -167,13 +167,17 @@
 
   function txt(id, v) { var el = document.getElementById(id); if (el && v != null) el.textContent = v; }
 
+  var timer = null;
   function refresh() {
     fetch('/api/adventure/who/' + encodeURIComponent(token), { headers: { 'Accept': 'application/json' } })
       .then(function (r) { return r.ok ? r.json() : null; })
       .then(function (data) {
         if (!data) return;
         if (!data.live) {
+          // Off the board entirely (expedition ended, opted out): nothing more to
+          // poll for, so stop the timer rather than hammer a token that's gone.
           txt('who-where', 'Back in town');
+          if (timer) clearInterval(timer);
           return;
         }
         var d = data.detail || {};
@@ -187,11 +191,17 @@
           txt('who-threat', d.threat_level);
           setBar();
         }
-        if (mark.OnRun) txt('who-where', mark.Where);
+        // Keep the location line honest in both directions: a mark that came back
+        // to town while still on the board must stop showing its old expedition.
+        if (mark.OnRun) {
+          txt('who-where', mark.Where);
+        } else {
+          txt('who-where', 'In town' + (mark.Idle ? ' · ' + mark.Idle : ''));
+        }
       })
       .catch(function () { /* transient — next tick will do */ });
   }
-  setInterval(refresh, 60000);
+  timer = setInterval(refresh, 60000);
 })();
 </script>
 {{end}}

internal/web/who.go

@@ -54,7 +54,6 @@ var abilityLabels = [6]string{"STR", "DEX", "CON", "INT", "WIS", "CHA"}
 type whoPage struct {
 	pageData
 	Mark      RosterView
-	Stale     bool
 	HasDetail bool
 	Detail    whoDetail
 	Abilities []abilityRow
@@ -90,7 +89,6 @@ func (s *Server) handleAdventureWho(w http.ResponseWriter, r *http.Request) {
 	page := whoPage{
 		pageData: base,
 		Mark:     toRosterView(entry),
-		Stale:    storage.RosterSnapshotAt() == 0,
 	}
 	if d, abil, ok := decodeWhoDetail(entry.Detail); ok {
 		page.HasDetail = true