refactor: retain workflow as optional editor

webui/src/styles/workflow.css

@@ -13,6 +13,64 @@
   width: min(620px, calc(100vw - 32px));
 }
 
+.workflow-standard-comparison-dialog {
+  width: min(1180px, calc(100vw - 32px));
+  height: min(760px, calc(100vh - 32px));
+}
+
+.workflow-standard-comparison {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  height: 100%;
+  min-height: 0;
+  gap: 10px;
+  overflow: hidden;
+}
+
+.workflow-standard-revision {
+  display: flex;
+  min-width: 0;
+  min-height: 0;
+  flex-direction: column;
+  border: var(--border-line);
+  border-radius: var(--radius-sm);
+  background: var(--panel-soft);
+  overflow: hidden;
+}
+
+.workflow-standard-revision header {
+  display: grid;
+  gap: 3px;
+  padding: 10px;
+  border-bottom: var(--border-line);
+}
+
+.workflow-standard-revision small {
+  color: var(--muted);
+  font-size: 11px;
+}
+
+.workflow-standard-revision pre {
+  min-height: 0;
+  flex: 1 1 auto;
+  margin: 0;
+  padding: 10px;
+  overflow: auto;
+  font-size: 11px;
+  white-space: pre;
+}
+
+@media (max-width: 900px) {
+  .workflow-standard-comparison {
+    grid-template-columns: 1fr;
+    overflow: auto;
+  }
+
+  .workflow-standard-revision {
+    min-height: 260px;
+  }
+}
+
 .workflow-definition-fields {
   display: grid;
   gap: 12px;