feat(simple): add next-action guidance

web/src/views/SimpleView.tsx

@@ -385,6 +385,37 @@ function formatTimelineStepLabel(step: SimpleRuntimeSnapshot['stage']) {
   }
 }
 
+function describeNextAction(
+  entry: ManualEntryPayload,
+  runtimeSnapshot: SimpleRuntimeSnapshot | null,
+): string {
+  const side = normalizeSetupSide(entry.simple_side);
+  const symbol = String(entry.symbol || '').trim().toUpperCase() || 'This symbol';
+
+  if (!runtimeSnapshot) {
+    return side === 'buy'
+      ? `${symbol} is saved and waiting for the configured buy trigger.`
+      : `${symbol} is saved and waiting for an eligible holding to manage.`;
+  }
+
+  switch (runtimeSnapshot.stage) {
+    case 'armed':
+      return side === 'buy'
+        ? `${symbol} is waiting for the configured drop trigger before sending an entry order.`
+        : `${symbol} is waiting for the configured profit exit trigger.`;
+    case 'entry_submitted':
+      return `${symbol} entry order has been submitted and is waiting for exchange fill confirmation.`;
+    case 'filled':
+      return `${symbol} entry is filled. The setup is now monitoring for the configured profit exit.`;
+    case 'exit_submitted':
+      return `${symbol} exit order has been submitted and is waiting for exchange fill confirmation.`;
+    case 'closed':
+      return `${symbol} setup is complete. The linked position has been closed.`;
+    default:
+      return `${symbol} runtime state is syncing.`;
+  }
+}
+
 function formatSetupUpdatedAt(entry: ManualEntryPayload): string | null {
   const raw = String(entry.sell_time || entry.buy_time || '').trim();
   if (!raw) return null;
@@ -1059,6 +1090,7 @@ export function SimpleView() {
               const side = normalizeSetupSide(entry.simple_side);
               const isEditing = editingSetupId === entryId;
               const runtimeSnapshot = deriveRuntimeSnapshot(entry, runtimeOrders, simpleHoldings);
+              const nextActionText = describeNextAction(entry, runtimeSnapshot);
               const updatedAt = formatSetupUpdatedAt(entry);
               return (
                 <div key={entryId} className="rounded-[1.5rem] border border-[var(--border)] bg-[var(--card-elevated)] p-5">
@@ -1175,6 +1207,11 @@ export function SimpleView() {
                       );
                     })}
                   </div>
+
+                  <div className="mt-4 rounded-2xl border border-[var(--border)] bg-[var(--background)] px-4 py-3 text-sm text-[var(--muted-foreground)]">
+                    <span className="font-semibold text-[var(--foreground)]">Next action:</span>{' '}
+                    {nextActionText}
+                  </div>
                 </div>
               );
             })}