feat: add optional description to request_apply_commit and request_spawn

hive-c0re/assets/app.js

@@ -684,6 +684,9 @@
             'new sub-agent — container will be created on approve'),
         );
       }
+      if (a.description) {
+        li.append(el('div', { class: 'approval-description' }, a.description));
+      }
       // Deny prompts the operator for an optional reason; the
       // submit handler stashes it into a hidden `note` input that
       // rides along on the POST and is surfaced to the manager via

hive-c0re/assets/dashboard.css

@@ -258,6 +258,7 @@ code {
 }
 .approvals .row { display: flex; align-items: center; flex-wrap: wrap; gap: 0.4em; }
 .approvals form.inline { display: inline; margin-left: 0.4em; }
+.approval-description { font-size: 0.85em; color: var(--fg-dim, #888); margin: 0.2em 0 0.4em 1.2em; }
 .approval-tabs {
   display: flex;
   gap: 0.4em;