fix: prevent node height accumulation with inline parameters on reload

Store measured settings panel height in node data (_settingsPanelHeight).
On workflow load, subtract it from persisted height so BaseNode's expand
effect re-adds the real panel height from a clean baseline instead of
double-counting.

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

src/components/nodes/BaseNode.tsx

@@ -141,7 +141,10 @@ export function BaseNode({
             nodes.map((node) => {
               if (node.id !== id) return node;
               const currentHeight = getNodeDimension(node, "height");
-              return applyNodeDimensions(node, getNodeDimension(node, "width"), currentHeight + finalHeight);
+              return {
+                ...applyNodeDimensions(node, getNodeDimension(node, "width"), currentHeight + finalHeight),
+                data: { ...node.data, _settingsPanelHeight: finalHeight },
+              };
             })
           );
         }
@@ -188,7 +191,10 @@ export function BaseNode({
             if (node.id !== id) return node;
             const currentHeight = getNodeDimension(node, "height");
             const newHeight = Math.max(minHeight, currentHeight + delta);
-            return applyNodeDimensions(node, getNodeDimension(node, "width"), newHeight);
+            return {
+              ...applyNodeDimensions(node, getNodeDimension(node, "width"), newHeight),
+              data: { ...node.data, _settingsPanelHeight: newPanelHeight },
+            };
           })
         );
 

src/store/workflowStore.ts

@@ -1712,17 +1712,54 @@ const workflowStoreImpl: StateCreator<WorkflowStore> = (set, get) => ({
     // Load cost data for this workflow
     const costData = workflow.id ? loadWorkflowCostData(workflow.id) : null;
 
+    // Subtract saved settings panel height so BaseNode's expand effect
+    // re-adds the real panel height from a clean baseline (prevents
+    // height accumulation on each save/reload cycle).
+    const INLINE_PARAM_NODE_TYPES = new Set([
+      "nanoBanana", "generateVideo", "generate3d", "generateAudio", "llmGenerate",
+    ]);
+    const inlineParamsEnabled = (() => {
+      try { return localStorage.getItem("node-banana-inline-parameters") === "true"; }
+      catch { return false; }
+    })();
+
     set({
       // Clear selected state - selection should not be persisted across sessions
       // Also validate position to ensure coordinates are finite numbers
-      nodes: hydratedWorkflow.nodes.map(node => ({
+      nodes: hydratedWorkflow.nodes.map(node => {
+        let adjustedNode = {
           ...node,
           selected: false,
           position: {
             x: isFinite(node.position?.x) ? node.position.x : 0,
             y: isFinite(node.position?.y) ? node.position.y : 0,
           },
-      })),
+        };
+
+        // Subtract panel height for inline-param nodes so the expand effect
+        // can re-add the real measured height without double-counting
+        const data = node.data as Record<string, unknown>;
+        const panelHeight = typeof data?._settingsPanelHeight === "number" ? data._settingsPanelHeight : 0;
+        if (
+          INLINE_PARAM_NODE_TYPES.has(node.type ?? "") &&
+          inlineParamsEnabled &&
+          (data?.parametersExpanded ?? true) === true &&
+          panelHeight > 0
+        ) {
+          const currentHeight = (node.style?.height as number) ?? (defaultNodeDimensions[node.type as NodeType]?.height ?? 300);
+          const minHeight = defaultNodeDimensions[node.type as NodeType]?.height ?? 300;
+          const newHeight = Math.max(minHeight, currentHeight - panelHeight);
+          adjustedNode = {
+            ...adjustedNode,
+            width: undefined,
+            height: undefined,
+            measured: undefined,
+            style: { ...adjustedNode.style, height: newHeight },
+          } as typeof adjustedNode;
+        }
+
+        return adjustedNode;
+      }),
       edges: hydratedWorkflow.edges,
       edgeStyle: hydratedWorkflow.edgeStyle || "angular",
       groups: hydratedWorkflow.groups || {},

src/types/nodes.ts

@@ -178,6 +178,7 @@ export interface NanoBananaNodeData extends BaseNodeData {
   parameters?: Record<string, unknown>; // Model-specific parameters for external providers
   inputSchema?: ModelInputDef[]; // Model's input schema for dynamic handles
   parametersExpanded?: boolean; // Collapse state for inline parameter display
+  _settingsPanelHeight?: number; // Measured settings panel height for reload correction
   status: NodeStatus;
   error: string | null;
   imageHistory: CarouselImageItem[]; // Carousel history (IDs only)
@@ -197,6 +198,7 @@ export interface GenerateVideoNodeData extends BaseNodeData {
   parameters?: Record<string, unknown>; // Model-specific parameters
   inputSchema?: ModelInputDef[]; // Model's input schema for dynamic handles
   parametersExpanded?: boolean; // Collapse state for inline parameter display
+  _settingsPanelHeight?: number; // Measured settings panel height for reload correction
   status: NodeStatus;
   error: string | null;
   videoHistory: CarouselVideoItem[]; // Carousel history (IDs only)
@@ -217,6 +219,7 @@ export interface Generate3DNodeData extends BaseNodeData {
   parameters?: Record<string, unknown>;
   inputSchema?: ModelInputDef[];
   parametersExpanded?: boolean; // Collapse state for inline parameter display
+  _settingsPanelHeight?: number; // Measured settings panel height for reload correction
   status: NodeStatus;
   error: string | null;
 }
@@ -242,6 +245,7 @@ export interface GenerateAudioNodeData extends BaseNodeData {
   parameters?: Record<string, unknown>; // Model-specific parameters (voice, speed, etc.)
   inputSchema?: ModelInputDef[]; // Model's input schema for dynamic handles
   parametersExpanded?: boolean; // Collapse state for inline parameter display
+  _settingsPanelHeight?: number; // Measured settings panel height for reload correction
   status: NodeStatus;
   error: string | null;
   audioHistory: CarouselAudioItem[]; // Carousel history (IDs only)
@@ -263,6 +267,7 @@ export interface LLMGenerateNodeData extends BaseNodeData {
   temperature: number;
   maxTokens: number;
   parametersExpanded?: boolean; // Collapse state for inline parameter display
+  _settingsPanelHeight?: number; // Measured settings panel height for reload correction
   status: NodeStatus;
   error: string | null;
 }