feat: add Run/Apply buttons to ControlPanel settings panels

Add execution buttons at the bottom of each configurable node's settings
panel so users can trigger generation directly from where they configure
settings, instead of needing keyboard shortcuts or external run buttons.

- GenerateImage, GenerateVideo, Generate3D, GenerateAudio, LLM: "Run" button
- EaseCurve: "Apply" button
- ConditionalSwitch: no button (passive routing node)
- Buttons disable and show running state while workflow executes

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/nodes/ControlPanel.tsx

@@ -183,6 +183,8 @@ function getNodeTypeTitle(type: NodeType): string {
 function GenerateImageControls({ node }: { node: Node }) {
   const nodeData = node.data as NanoBananaNodeData;
   const updateNodeData = useWorkflowStore((state) => state.updateNodeData);
+  const regenerateNode = useWorkflowStore((state) => state.regenerateNode);
+  const isRunning = useWorkflowStore((state) => state.isRunning);
   const { replicateApiKey, falApiKey, kieApiKey, replicateEnabled, kieEnabled } = useProviderApiKeys();
   const [externalModels, setExternalModels] = useState<ProviderModel[]>([]);
   const [isLoadingModels, setIsLoadingModels] = useState(false);
@@ -480,6 +482,14 @@ function GenerateImageControls({ node }: { node: Node }) {
         )}
       </div>
 
+      <button
+        onClick={() => regenerateNode(node.id)}
+        disabled={isRunning}
+        className="nodrag nopan w-full py-2 text-xs font-medium bg-blue-600 hover:bg-blue-500 disabled:opacity-40 disabled:pointer-events-none rounded text-white transition-colors"
+      >
+        {isRunning ? "Running..." : "Run"}
+      </button>
+
       {isBrowseDialogOpen && (
         <ModelSearchDialog
           isOpen={isBrowseDialogOpen}
@@ -496,6 +506,8 @@ function GenerateImageControls({ node }: { node: Node }) {
 function GenerateVideoControls({ node }: { node: Node }) {
   const nodeData = node.data as GenerateVideoNodeData;
   const updateNodeData = useWorkflowStore((state) => state.updateNodeData);
+  const regenerateNode = useWorkflowStore((state) => state.regenerateNode);
+  const isRunning = useWorkflowStore((state) => state.isRunning);
   const [isBrowseDialogOpen, setIsBrowseDialogOpen] = useState(false);
 
   const currentProvider: ProviderType = nodeData.selectedModel?.provider || "fal";
@@ -571,6 +583,14 @@ function GenerateVideoControls({ node }: { node: Node }) {
         )}
       </div>
 
+      <button
+        onClick={() => regenerateNode(node.id)}
+        disabled={isRunning}
+        className="nodrag nopan w-full py-2 text-xs font-medium bg-blue-600 hover:bg-blue-500 disabled:opacity-40 disabled:pointer-events-none rounded text-white transition-colors"
+      >
+        {isRunning ? "Running..." : "Run"}
+      </button>
+
       {isBrowseDialogOpen && (
         <ModelSearchDialog
           isOpen={isBrowseDialogOpen}
@@ -587,6 +607,8 @@ function GenerateVideoControls({ node }: { node: Node }) {
 function Generate3DControls({ node }: { node: Node }) {
   const nodeData = node.data as Generate3DNodeData;
   const updateNodeData = useWorkflowStore((state) => state.updateNodeData);
+  const regenerateNode = useWorkflowStore((state) => state.regenerateNode);
+  const isRunning = useWorkflowStore((state) => state.isRunning);
   const [isBrowseDialogOpen, setIsBrowseDialogOpen] = useState(false);
 
   const currentProvider: ProviderType = nodeData.selectedModel?.provider || "fal";
@@ -664,6 +686,14 @@ function Generate3DControls({ node }: { node: Node }) {
         )}
       </div>
 
+      <button
+        onClick={() => regenerateNode(node.id)}
+        disabled={isRunning}
+        className="nodrag nopan w-full py-2 text-xs font-medium bg-blue-600 hover:bg-blue-500 disabled:opacity-40 disabled:pointer-events-none rounded text-white transition-colors"
+      >
+        {isRunning ? "Running..." : "Run"}
+      </button>
+
       {isBrowseDialogOpen && (
         <ModelSearchDialog
           isOpen={isBrowseDialogOpen}
@@ -676,11 +706,23 @@ function Generate3DControls({ node }: { node: Node }) {
   );
 }
 
-// Generate Audio Controls (simplified placeholder - similar pattern to video/3d)
+// Generate Audio Controls
 function GenerateAudioControls({ node }: { node: Node }) {
+  const regenerateNode = useWorkflowStore((state) => state.regenerateNode);
+  const isRunning = useWorkflowStore((state) => state.isRunning);
+
   return (
-    <div className="text-xs text-neutral-400">
+    <div className="space-y-3">
-      Audio controls coming in full implementation
+      <div className="text-xs text-neutral-400">
+        Audio generation settings
+      </div>
+      <button
+        onClick={() => regenerateNode(node.id)}
+        disabled={isRunning}
+        className="nodrag nopan w-full py-2 text-xs font-medium bg-blue-600 hover:bg-blue-500 disabled:opacity-40 disabled:pointer-events-none rounded text-white transition-colors"
+      >
+        {isRunning ? "Running..." : "Run"}
+      </button>
     </div>
   );
 }
@@ -689,6 +731,8 @@ function GenerateAudioControls({ node }: { node: Node }) {
 function LLMControls({ node }: { node: Node }) {
   const nodeData = node.data as LLMGenerateNodeData;
   const updateNodeData = useWorkflowStore((state) => state.updateNodeData);
+  const regenerateNode = useWorkflowStore((state) => state.regenerateNode);
+  const isRunning = useWorkflowStore((state) => state.isRunning);
 
   const handleProviderChange = useCallback(
     (e: React.ChangeEvent<HTMLSelectElement>) => {
@@ -787,6 +831,14 @@ function LLMControls({ node }: { node: Node }) {
           className="nodrag nopan w-full h-1 bg-neutral-700 rounded-lg appearance-none cursor-pointer accent-blue-500"
         />
       </div>
+
+      <button
+        onClick={() => regenerateNode(node.id)}
+        disabled={isRunning}
+        className="nodrag nopan w-full py-2 text-xs font-medium bg-blue-600 hover:bg-blue-500 disabled:opacity-40 disabled:pointer-events-none rounded text-white transition-colors"
+      >
+        {isRunning ? "Running..." : "Run"}
+      </button>
     </div>
   );
 }
@@ -795,6 +847,8 @@ function LLMControls({ node }: { node: Node }) {
 function EaseCurveControls({ node }: { node: Node }) {
   const nodeData = node.data as EaseCurveNodeData;
   const updateNodeData = useWorkflowStore((state) => state.updateNodeData);
+  const regenerateNode = useWorkflowStore((state) => state.regenerateNode);
+  const isRunning = useWorkflowStore((state) => state.isRunning);
   const [showPresets, setShowPresets] = useState(false);
   const presetsButtonRef = useRef<HTMLButtonElement>(null);
 
@@ -878,6 +932,14 @@ function EaseCurveControls({ node }: { node: Node }) {
         />
       </div>
 
+      <button
+        onClick={() => regenerateNode(node.id)}
+        disabled={isRunning}
+        className="nodrag nopan w-full py-2 text-xs font-medium bg-blue-600 hover:bg-blue-500 disabled:opacity-40 disabled:pointer-events-none rounded text-white transition-colors"
+      >
+        {isRunning ? "Applying..." : "Apply"}
+      </button>
+
       {showPresets && typeof document !== 'undefined' && createPortal(
         <div
           className="fixed z-[100] bg-neutral-800 border border-neutral-600 rounded-lg shadow-xl p-2 max-h-[60vh] overflow-y-auto nowheel"