feat(dashboard): execution profiles + await-input UI for workflow nodes

Inspector for prompt nodes: executor picker (model via CustomModelDropdown,
agent, skill from discovered skills, CLI named script), auto-approve toggle,
per-node max retries, and a wait-for-user-input mode with a User input palette
preset. Task card shows a 'Needs input' badge for awaiting-user-input status;
the task modal workflow tab shows the node's question as a banner.

packages/dashboard/app/components/WorkflowNodeEditor.css

@@ -239,6 +239,27 @@
   color: var(--text-tertiary);
 }
 
+.wf-inspector-note--info {
+  color: var(--ws-warning);
+}
+
+.wf-field--checkbox {
+  flex-direction: row;
+  align-items: center;
+  gap: var(--space-sm);
+  cursor: pointer;
+}
+
+.wf-field--checkbox input[type="checkbox"] {
+  width: auto;
+  padding: 0;
+  margin: 0;
+  background: none;
+  border: none;
+  accent-color: var(--todo);
+  cursor: pointer;
+}
+
 /* Canvas nodes */
 .wf-node {
   display: inline-flex;