refactor(ui): centralize compact icon button sizing in EMCN

apps/sim/app/workspace/[workspaceId]/components/find-bar/find-bar.tsx

@@ -129,7 +129,8 @@ export const FindBar = memo(function FindBar({
             type='button'
             variant='ghost'
             size='icon'
-            className='size-6 shrink-0'
+            iconSize='compact'
+            className='shrink-0'
             aria-label={showReplace ? 'Hide replace' : 'Show replace'}
             aria-expanded={showReplace}
             onClick={() => setShowReplace((visible) => !visible)}
@@ -179,7 +180,8 @@ export const FindBar = memo(function FindBar({
           type='button'
           variant='ghost'
           size='icon'
-          className='size-6 shrink-0'
+          iconSize='compact'
+          className='shrink-0'
           aria-label='Previous match'
           title='Previous match (Shift+Enter)'
           disabled={!navEnabled}
@@ -191,7 +193,8 @@ export const FindBar = memo(function FindBar({
           type='button'
           variant='ghost'
           size='icon'
-          className='size-6 shrink-0'
+          iconSize='compact'
+          className='shrink-0'
           aria-label='Next match'
           title='Next match (Enter)'
           disabled={!navEnabled}
@@ -203,7 +206,8 @@ export const FindBar = memo(function FindBar({
           type='button'
           variant='ghost'
           size='icon'
-          className='size-6 shrink-0'
+          iconSize='compact'
+          className='shrink-0'
           aria-label='Close find'
           title='Close (Esc)'
           onClick={onClose}

apps/sim/app/workspace/[workspaceId]/home/components/mothership-view/components/resource-content/components/browser-session/browser-find-bar.tsx

@@ -106,7 +106,8 @@ export function BrowserFindBar({ inputRef, onClose, scopeId }: BrowserFindBarPro
               size='sm'
               aria-label='Previous match'
               disabled={!result?.matches}
-              className='size-[24px] shrink-0 p-0'
+              iconSize='compact-fixed'
+              className='shrink-0'
               onClick={() => step('back')}
             >
               <ArrowUp className='size-[13px]' />
@@ -117,7 +118,8 @@ export function BrowserFindBar({ inputRef, onClose, scopeId }: BrowserFindBarPro
               size='sm'
               aria-label='Next match'
               disabled={!result?.matches}
-              className='size-[24px] shrink-0 p-0'
+              iconSize='compact-fixed'
+              className='shrink-0'
               onClick={() => step('forward')}
             >
               <ArrowDown className='size-[13px]' />
@@ -127,7 +129,8 @@ export function BrowserFindBar({ inputRef, onClose, scopeId }: BrowserFindBarPro
               variant='ghost-secondary'
               size='sm'
               aria-label='Close find bar'
-              className='size-[24px] shrink-0 p-0'
+              iconSize='compact-fixed'
+              className='shrink-0'
               onClick={dismiss}
             >
               <X className='size-[13px]' />

apps/sim/app/workspace/[workspaceId]/tables/[tableId]/components/workflow-sidebar/workflow-sidebar.tsx

@@ -730,7 +730,8 @@ export function WorkflowSidebarBody({
                                 'noopener,noreferrer'
                               )
                             }
-                            className='absolute right-[6px] bottom-1.5 z-10 size-[24px] cursor-pointer border border-[var(--border)] bg-[var(--surface-2)] p-0 hover-hover:bg-[var(--surface-4)]'
+                            iconSize='compact-fixed'
+                            className='absolute right-[6px] bottom-1.5 z-10 cursor-pointer border border-[var(--border)] bg-[var(--surface-2)] hover-hover:bg-[var(--surface-4)]'
                           >
                             <SquareArrowUpRight className='size-[12px]' />
                           </Button>

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/action-bar/action-bar.tsx

@@ -36,7 +36,7 @@ import { useWorkflowStore } from '@/stores/workflows/workflow/store'
 const DEFAULT_DUPLICATE_OFFSET = { x: 50, y: 50 }
 
 const ACTION_BUTTON_STYLES = [
-  'size-[24px] rounded-md p-0',
+  'rounded-md',
   'border-none bg-transparent text-[var(--text-icon)]',
   'hover-hover:bg-[var(--surface-5)] hover-hover:text-[var(--text-primary)]!',
   'dark:hover-hover:bg-[var(--surface-4)]',
@@ -472,6 +472,7 @@ export const ActionBar = memo(
                       }
                       if (canRunBlock) handleRunFromBlockClick()
                     }}
+                    iconSize='compact-fixed'
                     className={cn(getActionButtonStyles('run'), isWorkflowRunning && 'group/run')}
                     disabled={!canStopWorkflow && !canRunBlock}
                   >
@@ -517,6 +518,7 @@ export const ActionBar = memo(
                         collaborativeBatchToggleBlockEnabled([blockId])
                       }
                     }}
+                    iconSize='compact-fixed'
                     className={getActionButtonStyles('enabled')}
                     disabled={
                       isWorkflowRunning ||
@@ -553,6 +555,7 @@ export const ActionBar = memo(
                   <DropdownMenuTrigger asChild>
                     <Button
                       variant='ghost'
+                      iconSize='compact-fixed'
                       className={getActionButtonStyles('color')}
                       disabled={
                         isWorkflowRunning ||
@@ -618,6 +621,7 @@ export const ActionBar = memo(
                         collaborativeBatchToggleLocked([blockId])
                       }
                     }}
+                    iconSize='compact-fixed'
                     className={getActionButtonStyles('lock')}
                     disabled={isWorkflowRunning || disabled || (isLocked && isParentLocked)}
                   >
@@ -650,6 +654,7 @@ export const ActionBar = memo(
                         handleDuplicateBlock()
                       }
                     }}
+                    iconSize='compact-fixed'
                     className={getActionButtonStyles('duplicate')}
                     disabled={isWorkflowRunning || disabled || isLocked || isParentLocked}
                   >
@@ -682,6 +687,7 @@ export const ActionBar = memo(
                         )
                       }
                     }}
+                    iconSize='compact-fixed'
                     className={getActionButtonStyles('remove')}
                     disabled={
                       isWorkflowRunning ||
@@ -717,6 +723,7 @@ export const ActionBar = memo(
                       collaborativeBatchRemoveBlocks([blockId])
                     }
                   }}
+                  iconSize='compact-fixed'
                   className={getActionButtonStyles('delete')}
                   disabled={isWorkflowRunning || disabled || isLocked || isParentLocked}
                 >

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/file-upload/file-upload.tsx

@@ -212,7 +212,8 @@ function SingleFileSelector({
         aria-label='Remove file'
         type='button'
         variant='ghost'
-        className='-translate-y-1/2 absolute top-1/2 right-[28px] z-10 size-6 p-0'
+        iconSize='compact'
+        className='-translate-y-1/2 absolute top-1/2 right-[28px] z-10'
         onClick={onClear}
         disabled={isDeleting}
       >
@@ -766,7 +767,8 @@ export function FileUpload({
           aria-label='Remove file'
           type='button'
           variant='ghost'
-          className='-translate-y-1/2 absolute top-1/2 right-[4px] size-6 p-0'
+          iconSize='compact'
+          className='-translate-y-1/2 absolute top-1/2 right-[4px]'
           onClick={(e) => handleRemoveFile(file, e)}
           disabled={isDeleting}
         >

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/messages-input/messages-input.tsx

@@ -661,7 +661,8 @@ export function MessagesInput({
                               deleteMessage(index)
                             }}
                             disabled={disabled}
-                            className='-my-1 -mr-1 size-6 p-0'
+                            iconSize='compact'
+                            className='-my-1 -mr-1'
                             aria-label='Delete message'
                           >
                             <Trash className='size-3' />
@@ -673,7 +674,8 @@ export function MessagesInput({
                               moveMessageUp(index)
                             }}
                             disabled={disabled || index === 0}
-                            className='-my-1 -mr-1 size-6 p-0'
+                            iconSize='compact'
+                            className='-my-1 -mr-1'
                             aria-label='Move message up'
                           >
                             <ChevronUp className='size-3' />
@@ -685,7 +687,8 @@ export function MessagesInput({
                               moveMessageDown(index)
                             }}
                             disabled={disabled || index === currentMessages.length - 1}
-                            className='-my-1 -mr-1 size-6 p-0'
+                            iconSize='compact'
+                            className='-my-1 -mr-1'
                             aria-label='Move message down'
                           >
                             <ChevronDown className='size-3' />
@@ -699,7 +702,8 @@ export function MessagesInput({
                           addMessageAfter(index)
                         }}
                         disabled={disabled}
-                        className='-mr-1.5 -my-1 size-6 p-0'
+                        iconSize='compact'
+                        className='-mr-1.5 -my-1'
                         aria-label='Add message below'
                       >
                         <Plus className='size-3.5' />

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/selector-combobox/selector-combobox.tsx

@@ -340,7 +340,8 @@ export function SelectorCombobox({
                 aria-label='Clear selection'
                 type='button'
                 variant='ghost'
-                className='-translate-y-1/2 absolute top-1/2 right-[28px] z-10 size-6 p-0'
+                iconSize='compact'
+                className='-translate-y-1/2 absolute top-1/2 right-[28px] z-10'
                 onClick={handleClear}
               >
                 <X className='size-4 opacity-50 hover-hover:opacity-100' />

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/editor.tsx

@@ -611,7 +611,8 @@ export function Editor() {
                                   type='button'
                                   variant='ghost'
                                   onClick={handleOpenChildWorkflow}
-                                  className='absolute right-[6px] bottom-1.5 z-10 size-[24px] cursor-pointer border border-[var(--border)] bg-[var(--surface-2)] p-0 hover-hover:bg-[var(--surface-4)]'
+                                  iconSize='compact-fixed'
+                                  className='absolute right-[6px] bottom-1.5 z-10 cursor-pointer border border-[var(--border)] bg-[var(--surface-2)] hover-hover:bg-[var(--surface-4)]'
                                 >
                                   <SquareArrowUpRight className='size-[12px]' />
                                 </Button>

apps/sim/app/workspace/[workspaceId]/w/components/preview/components/preview-editor/preview-editor.tsx

@@ -1398,7 +1398,8 @@ function PreviewEditorContent({
                               type='button'
                               variant='ghost'
                               onClick={handleExpandChildWorkflow}
-                              className='absolute right-[6px] bottom-1.5 z-10 size-[24px] cursor-pointer border border-[var(--border)] bg-[var(--surface-2)] p-0 hover-hover:bg-[var(--surface-4)]'
+                              iconSize='compact-fixed'
+                              className='absolute right-[6px] bottom-1.5 z-10 cursor-pointer border border-[var(--border)] bg-[var(--surface-2)] hover-hover:bg-[var(--surface-4)]'
                             >
                               {isExecutionMode && onDrillDown ? (
                                 <Expand className='size-[12px]' />

packages/emcn/src/components/bulk-action-button/bulk-action-button.tsx

@@ -18,7 +18,8 @@ export const bulkActionButtonVariants = cva(
   }
 )
 
-export interface BulkActionButtonProps extends Omit<ButtonProps, 'variant' | 'size'> {
+export interface BulkActionButtonProps
+  extends Omit<ButtonProps, 'variant' | 'size' | 'iconPadding' | 'iconSize'> {
   /** Accessible name for the icon action; tooltip content is supplied separately. */
   'aria-label': string
   /**

packages/emcn/src/components/button/button.test.tsx

@@ -0,0 +1,67 @@
+/** @vitest-environment node */
+/** biome-ignore assist/source/organizeImports: Preserve the documented core/external/UI import order. */
+import { renderToStaticMarkup } from 'react-dom/server'
+import { describe, expect, it } from 'vitest'
+import { Button } from '@sim/emcn'
+
+function normalizeClasses(markup: string) {
+  return markup.replace(
+    /class="([^"]+)"/g,
+    (_, classes: string) => `class="${classes.split(/\s+/).sort().join(' ')}"`
+  )
+}
+
+/** The three existing Button treatments used by compact product actions. */
+const TREATMENTS = [
+  { size: undefined, variant: 'ghost' },
+  { size: 'sm', variant: 'ghost-secondary' },
+  { size: 'icon', variant: 'ghost' },
+] as const
+
+describe('Button iconSize', () => {
+  for (const [iconSize, previousClass] of [
+    ['compact', 'size-6 p-0'],
+    ['compact-fixed', 'size-[24px] p-0'],
+  ] as const) {
+    it.each(TREATMENTS)(
+      `preserves the ${iconSize} treatment with size=$size and variant=$variant`,
+      (treatment) => {
+        const icon = <svg className='size-[14px]' strokeWidth={1.55} aria-hidden='true' />
+        const before = renderToStaticMarkup(
+          <Button
+            {...treatment}
+            type='button'
+            aria-label='Previous match'
+            className={`${previousClass} shrink-0`}
+          >
+            {icon}
+          </Button>
+        )
+        const after = renderToStaticMarkup(
+          <Button
+            {...treatment}
+            type='button'
+            aria-label='Previous match'
+            iconSize={iconSize}
+            className='shrink-0'
+          >
+            {icon}
+          </Button>
+        )
+        expect(normalizeClasses(after)).toBe(normalizeClasses(before))
+      }
+    )
+  }
+
+  it('allows explicit padding and consumer width to take precedence', () => {
+    const markup = renderToStaticMarkup(
+      <Button iconSize='compact-fixed' iconPadding='sm' className='w-[40px]!' aria-label='Run' />
+    )
+    expect(markup).toContain('size-[24px]')
+    expect(markup).toContain('w-[40px]!')
+    expect(markup).toContain('p-1')
+    expect(markup).not.toContain('p-0')
+    expect(markup).not.toContain('iconSize')
+    expect(markup).not.toContain('iconPadding')
+  })
+})

packages/emcn/src/components/button/button.tsx

@@ -50,6 +50,10 @@ const buttonVariants = cva(
         md: 'px-2 py-1.5 text-[length:12px]',
         icon: 'size-[20px] rounded-sm p-0 [&_svg]:[stroke-width:1.25]',
       },
+      iconSize: {
+        compact: 'size-6 p-0',
+        'compact-fixed': 'size-[24px] p-0',
+      },
       iconPadding: {
         sm: 'p-1',
         md: 'p-1.5',
@@ -75,6 +79,15 @@ const buttonVariants = cva(
 export interface ButtonProps
   extends ButtonHTMLAttributes<HTMLButtonElement>,
     VariantProps<typeof buttonVariants> {
+  /**
+   * Square icon-action geometry without changing the selected size's typography,
+   * corner radius, icon stroke or color. `compact` follows the spacing scale
+   * (24px at the default root font size); `compact-fixed` stays at 24px.
+   * Both remove padding; an explicit iconPadding or className can override it.
+   * Omit to retain the selected size's geometry.
+   * @example <Button variant='ghost' iconSize='compact' aria-label='Remove'><X /></Button>
+   */
+  iconSize?: VariantProps<typeof buttonVariants>['iconSize']
   /**
    * Symmetric padding for icon actions whose content or layout determines their size.
    * Preserves the selected size's typography, corner radius and icon stroke.
@@ -85,11 +98,11 @@ export interface ButtonProps
 }
 
 const Button = forwardRef<HTMLButtonElement, ButtonProps>(
-  ({ className, variant, size, iconPadding, ...props }, ref) => {
+  ({ className, variant, size, iconSize, iconPadding, ...props }, ref) => {
     return (
       <button
         ref={ref}
-        className={cn(buttonVariants({ variant, size, iconPadding }), className)}
+        className={cn(buttonVariants({ variant, size, iconSize, iconPadding }), className)}
         {...props}
       />
     )

packages/emcn/src/components/composer-action-button/composer-action-button.tsx

@@ -26,7 +26,8 @@ export const composerActionButtonVariants = cva('rounded-full p-0', {
   defaultVariants: { size: 'md', active: true },
 })
 
-export interface ComposerActionButtonProps extends Omit<ButtonProps, 'variant' | 'size'> {
+export interface ComposerActionButtonProps
+  extends Omit<ButtonProps, 'variant' | 'size' | 'iconPadding' | 'iconSize'> {
   /** Accessible name for the caller's icon action. */
   'aria-label': string
   /** 28px by default; `sm` retains compact chat's 22px geometry and hover treatment. */

packages/workflow-renderer/src/note/note-block-view.tsx

@@ -1058,7 +1058,8 @@ export function NoteBlockView({
                       event.stopPropagation()
                       onExpandedChange(!isExpanded)
                     }}
-                    className='nodrag nopan nowheel pointer-events-none ml-1 size-[24px] shrink-0 rounded-md border-none bg-transparent p-0 text-current opacity-0 transition-[background-color,color,opacity,transform] duration-150 hover-hover:bg-current/10 hover-hover:opacity-100 active:scale-[0.96] group-hover:pointer-events-auto group-hover:opacity-70 group-data-[node-selected]:pointer-events-auto group-data-[node-selected]:opacity-70'
+                    iconSize='compact-fixed'
+                    className='nodrag nopan nowheel pointer-events-none ml-1 shrink-0 rounded-md border-none bg-transparent text-current opacity-0 transition-[background-color,color,opacity,transform] duration-150 hover-hover:bg-current/10 hover-hover:opacity-100 active:scale-[0.96] group-hover:pointer-events-auto group-hover:opacity-70 group-data-[node-selected]:pointer-events-auto group-data-[node-selected]:opacity-70'
                   >
                     <span className='relative size-[14px]'>
                       <Expand