Add governed form handoffs

webui/src/styles/forms-runtime.css

@@ -143,6 +143,24 @@
   padding: 20px 0;
 }
 
+.form-runtime-section > header {
+  padding-top: 16px;
+  border-bottom: 1px solid var(--border);
+}
+
+.form-runtime-section > header h2,
+.form-handoffs h2 {
+  margin: 0;
+  font-size: 0.98rem;
+  letter-spacing: 0;
+}
+
+.form-runtime-section > header p {
+  margin: 5px 0 10px;
+  color: var(--text-soft);
+  font-size: 0.84rem;
+}
+
 .form-field {
   display: flex;
   min-width: 0;
@@ -216,6 +234,71 @@
   color: var(--text);
 }
 
+.form-handoffs {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  margin-top: 18px;
+  padding-top: 16px;
+  border-top: 1px solid var(--border);
+}
+
+.form-handoff-heading,
+.form-handoff-create,
+.form-handoff-actions {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
+.form-handoff-heading {
+  justify-content: space-between;
+  flex-wrap: wrap;
+}
+
+.form-handoff-create input {
+  width: min(260px, 34vw);
+}
+
+.form-handoff-empty {
+  margin: 0;
+  color: var(--text-soft);
+  font-size: 0.84rem;
+}
+
+.form-handoff-list {
+  border-top: 1px solid var(--border);
+}
+
+.form-handoff-row {
+  display: grid;
+  grid-template-columns: minmax(160px, 1fr) auto minmax(180px, 1fr) auto;
+  align-items: center;
+  gap: 10px;
+  min-height: 54px;
+  border-bottom: 1px solid var(--border);
+}
+
+.form-handoff-row > span:first-child {
+  display: flex;
+  min-width: 0;
+  flex-direction: column;
+  gap: 2px;
+}
+
+.form-handoff-row small,
+.form-handoff-error {
+  overflow: hidden;
+  color: var(--text-soft);
+  font-size: 0.78rem;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.form-handoff-error {
+  color: var(--danger);
+}
+
 .form-instance-actions {
   display: flex;
   align-items: end;
@@ -296,4 +379,18 @@
     align-items: stretch;
     flex-direction: column;
   }
+
+  .form-handoff-create,
+  .form-handoff-row {
+    align-items: stretch;
+    grid-template-columns: 1fr;
+  }
+
+  .form-handoff-create {
+    flex-direction: column;
+  }
+
+  .form-handoff-create input {
+    width: 100%;
+  }
 }