refactor(skill): move skill editor slice to core workflow store

Move SkillEditorSlice from injection pattern to core workflow store,
making it available to all workflow contexts (workflow-app, chatflow,
and future rag-pipeline).

- Add createSkillEditorSlice to core createWorkflowStore
- Remove complex type conversion logic from workflow-app/index.tsx
- Remove optional chaining (?.) and non-null assertions (!) from components
- Simplify slice composition with type assertions via unknown

web/app/components/workflow-app/index.tsx

@@ -1,8 +1,7 @@
 'use client'
 
-import type { WorkflowSliceShape } from './store/workflow/workflow-slice'
 import type { Features as FeaturesData } from '@/app/components/base/features/types'
-import type { SkillEditorSliceShape } from '@/app/components/workflow/skill/store'
+import type { InjectWorkflowStoreSliceFn } from '@/app/components/workflow/store'
 import { useSearchParams } from 'next/navigation'
 import { useQueryState } from 'nuqs'
 import {
@@ -19,7 +18,6 @@ import {
   WorkflowContextProvider,
 } from '@/app/components/workflow/context'
 import SkillMain from '@/app/components/workflow/skill/main'
-import { createSkillEditorSlice } from '@/app/components/workflow/skill/store'
 import { useWorkflowStore } from '@/app/components/workflow/store'
 import { useTriggerStatusStore } from '@/app/components/workflow/store/trigger-status'
 import {
@@ -248,29 +246,10 @@ const WorkflowAppWithAdditionalContext = () => {
   )
 }
 
-type WorkflowAppInjectedSlice = WorkflowSliceShape & SkillEditorSliceShape
-type SliceCreatorArgs = Parameters<import('zustand').StateCreator<WorkflowAppInjectedSlice>>
-
-const injectWorkflowStoreSliceFn: import('@/app/components/workflow/store').InjectWorkflowStoreSliceFn = (
-  set,
-  get,
-  store,
-) => {
-  const args: SliceCreatorArgs = [
-    set as SliceCreatorArgs[0],
-    get as SliceCreatorArgs[1],
-    store as SliceCreatorArgs[2],
-  ]
-  return {
-    ...createWorkflowSlice(...args),
-    ...createSkillEditorSlice(...args),
-  }
-}
-
 const WorkflowAppWrapper = () => {
   return (
     <WorkflowContextProvider
-      injectWorkflowStoreSliceFn={injectWorkflowStoreSliceFn}
+      injectWorkflowStoreSliceFn={createWorkflowSlice as InjectWorkflowStoreSliceFn}
     >
       <WorkflowAppWithAdditionalContext />
     </WorkflowContextProvider>

web/app/components/workflow/skill/editor-tabs.tsx

@@ -12,26 +12,26 @@ import { useSkillAssetNodeMap } from './hooks/use-skill-asset-tree'
 
 const EditorTabs: FC = () => {
   const { t } = useTranslation('workflow')
-  const openTabIds = useStore(s => s.openTabIds!)
-  const activeTabId = useStore(s => s.activeTabId!)
-  const previewTabId = useStore(s => s.previewTabId!)
-  const dirtyContents = useStore(s => s.dirtyContents!)
+  const openTabIds = useStore(s => s.openTabIds)
+  const activeTabId = useStore(s => s.activeTabId)
+  const previewTabId = useStore(s => s.previewTabId)
+  const dirtyContents = useStore(s => s.dirtyContents)
   const storeApi = useWorkflowStore()
   const { data: nodeMap } = useSkillAssetNodeMap()
 
   const [pendingCloseId, setPendingCloseId] = useState<string | null>(null)
 
   const handleTabClick = useCallback((fileId: string) => {
-    storeApi.getState().activateTab?.(fileId)
+    storeApi.getState().activateTab(fileId)
   }, [storeApi])
 
   const handleTabDoubleClick = useCallback((fileId: string) => {
-    storeApi.getState().pinTab?.(fileId)
+    storeApi.getState().pinTab(fileId)
   }, [storeApi])
 
   const closeTab = useCallback((fileId: string) => {
-    storeApi.getState().closeTab?.(fileId)
-    storeApi.getState().clearDraftContent?.(fileId)
+    storeApi.getState().closeTab(fileId)
+    storeApi.getState().clearDraftContent(fileId)
   }, [storeApi])
 
   const handleTabClose = useCallback((fileId: string) => {

web/app/components/workflow/skill/file-tree/index.tsx

@@ -49,8 +49,8 @@ const FileTree: React.FC<FileTreeProps> = ({ className }) => {
   const { data: treeData, isLoading, error } = useSkillAssetTreeData()
   const isMutating = useIsMutating() > 0
 
-  const expandedFolderIds = useStore(s => s.expandedFolderIds!)
-  const activeTabId = useStore(s => s.activeTabId!)
+  const expandedFolderIds = useStore(s => s.expandedFolderIds)
+  const activeTabId = useStore(s => s.activeTabId)
   const storeApi = useWorkflowStore()
 
   const renameNode = useRenameAppAssetNode()
@@ -62,12 +62,12 @@ const FileTree: React.FC<FileTreeProps> = ({ className }) => {
   }, [expandedFolderIds])
 
   const handleToggle = useCallback((id: string) => {
-    storeApi.getState().toggleFolder?.(id)
+    storeApi.getState().toggleFolder(id)
   }, [storeApi])
 
   const handleActivate = useCallback((node: NodeApi<TreeNodeData>) => {
     if (node.data.node_type === 'file')
-      storeApi.getState().openTab?.(node.data.id, { pinned: true })
+      storeApi.getState().openTab(node.data.id, { pinned: true })
     else
       node.toggle()
   }, [storeApi])
@@ -95,7 +95,7 @@ const FileTree: React.FC<FileTreeProps> = ({ className }) => {
 
     const ancestors = getAncestorIds(activeTabId, treeData.children)
     if (ancestors.length > 0)
-      storeApi.getState().revealFile?.(ancestors)
+      storeApi.getState().revealFile(ancestors)
     requestAnimationFrame(() => {
       const node = tree.get(activeTabId)
       if (node) {

web/app/components/workflow/skill/file-tree/tree-context-menu.tsx

@@ -22,7 +22,7 @@ const TreeContextMenu: FC<TreeContextMenuProps> = ({ treeRef }) => {
   const { data: treeData } = useSkillAssetTreeData()
 
   const handleClose = useCallback(() => {
-    storeApi.getState().setContextMenu?.(null)
+    storeApi.getState().setContextMenu(null)
   }, [storeApi])
 
   useClickAway(() => {

web/app/components/workflow/skill/file-tree/tree-node.tsx

@@ -26,7 +26,7 @@ const TreeNode = ({ node, style, dragHandle }: NodeRendererProps<TreeNodeData>)
   const { t } = useTranslation('workflow')
   const isFolder = node.data.node_type === 'folder'
   const isSelected = node.isSelected
-  const isDirty = useStore(s => s.dirtyContents?.has(node.data.id) ?? false)
+  const isDirty = useStore(s => s.dirtyContents.has(node.data.id))
   const contextMenuNodeId = useStore(s => s.contextMenu?.nodeId)
   const hasContextMenu = contextMenuNodeId === node.data.id
   const storeApi = useWorkflowStore()
@@ -41,11 +41,11 @@ const TreeNode = ({ node, style, dragHandle }: NodeRendererProps<TreeNodeData>)
   )
 
   const openFilePreview = useCallback(() => {
-    storeApi.getState().openTab?.(node.data.id, { pinned: false })
+    storeApi.getState().openTab(node.data.id, { pinned: false })
   }, [node.data.id, storeApi])
 
   const openFilePinned = useCallback(() => {
-    storeApi.getState().openTab?.(node.data.id, { pinned: true })
+    storeApi.getState().openTab(node.data.id, { pinned: true })
   }, [node.data.id, storeApi])
 
   const { handleClick: handleFileClick, handleDoubleClick: handleFileDoubleClick } = useDelayedClick({
@@ -79,7 +79,7 @@ const TreeNode = ({ node, style, dragHandle }: NodeRendererProps<TreeNodeData>)
     e.preventDefault()
     e.stopPropagation()
 
-    storeApi.getState().setContextMenu?.({
+    storeApi.getState().setContextMenu({
       top: e.clientY,
       left: e.clientX,
       nodeId: node.data.id,
@@ -97,7 +97,7 @@ const TreeNode = ({ node, style, dragHandle }: NodeRendererProps<TreeNodeData>)
       if (isFolder)
         node.toggle()
       else
-        storeApi.getState().openTab?.(node.data.id, { pinned: true })
+        storeApi.getState().openTab(node.data.id, { pinned: true })
     }
   }, [isFolder, node, storeApi])
 

web/app/components/workflow/skill/hooks/use-file-operations.ts

@@ -250,14 +250,14 @@ export function useFileOperations({
       await deleteNode.mutateAsync({ appId, nodeId })
 
       descendantFileIds.forEach((fileId) => {
-        storeApi.getState().closeTab?.(fileId)
-        storeApi.getState().clearDraftContent?.(fileId)
+        storeApi.getState().closeTab(fileId)
+        storeApi.getState().clearDraftContent(fileId)
       })
 
       // Also close and clear the node itself if it's a file
       if (!isFolder) {
-        storeApi.getState().closeTab?.(nodeId)
-        storeApi.getState().clearDraftContent?.(nodeId)
+        storeApi.getState().closeTab(nodeId)
+        storeApi.getState().clearDraftContent(nodeId)
       }
 
       Toast.notify({

web/app/components/workflow/skill/sidebar-search-add.tsx

@@ -55,7 +55,7 @@ const SidebarSearchAdd: FC = () => {
   const [showMenu, setShowMenu] = useState(false)
 
   const { data: treeData } = useSkillAssetTreeData()
-  const activeTabId = useStore(s => s.activeTabId!)
+  const activeTabId = useStore(s => s.activeTabId)
 
   const targetFolderId = useMemo(() => {
     if (!treeData?.children)

web/app/components/workflow/skill/skill-doc-editor.tsx

@@ -34,8 +34,8 @@ const SkillDocEditor: FC = () => {
   const appDetail = useAppStore(s => s.appDetail)
   const appId = appDetail?.id || ''
 
-  const activeTabId = useStore(s => s.activeTabId!)
-  const dirtyContents = useStore(s => s.dirtyContents!)
+  const activeTabId = useStore(s => s.activeTabId)
+  const dirtyContents = useStore(s => s.dirtyContents)
   const storeApi = useWorkflowStore()
   const { data: nodeMap } = useSkillAssetNodeMap()
 
@@ -68,8 +68,8 @@ const SkillDocEditor: FC = () => {
   const handleEditorChange = useCallback((value: string | undefined) => {
     if (!activeTabId || !isEditable)
       return
-    storeApi.getState().setDraftContent?.(activeTabId, value ?? '')
-    storeApi.getState().pinTab?.(activeTabId)
+    storeApi.getState().setDraftContent(activeTabId, value ?? '')
+    storeApi.getState().pinTab(activeTabId)
   }, [activeTabId, isEditable, storeApi])
 
   const handleSave = useCallback(async () => {
@@ -86,7 +86,7 @@ const SkillDocEditor: FC = () => {
         nodeId: activeTabId,
         payload: { content },
       })
-      storeApi.getState().clearDraftContent?.(activeTabId)
+      storeApi.getState().clearDraftContent(activeTabId)
       Toast.notify({
         type: 'success',
         message: t('api.saved', { ns: 'common' }),

web/app/components/workflow/skill/store/index.ts

@@ -216,13 +216,19 @@ export type SkillEditorSliceShape
       resetSkillEditor: () => void
     }
 
-export const createSkillEditorSlice: StateCreator<SkillEditorSliceShape, [], [], SkillEditorSliceShape> = (set, get, store) => {
-  const args = [set, get, store] as Parameters<StateCreator<SkillEditorSliceShape>>
+export const createSkillEditorSlice: StateCreator<SkillEditorSliceShape> = (set, get, store) => {
+  // Type assertion via unknown to allow composition with other slices in a larger store
+  // This is safe because all slice creators only use set/get for their own properties
+  const tabArgs = [set, get, store] as unknown as Parameters<StateCreator<TabSliceShape>>
+  const fileTreeArgs = [set, get, store] as unknown as Parameters<StateCreator<FileTreeSliceShape>>
+  const dirtyArgs = [set, get, store] as unknown as Parameters<StateCreator<DirtySliceShape>>
+  const menuArgs = [set, get, store] as unknown as Parameters<StateCreator<FileOperationsMenuSliceShape>>
+
   return {
-    ...createTabSlice(...args),
-    ...createFileTreeSlice(...args),
-    ...createDirtySlice(...args),
-    ...createFileOperationsMenuSlice(...args),
+    ...createTabSlice(...tabArgs),
+    ...createFileTreeSlice(...fileTreeArgs),
+    ...createDirtySlice(...dirtyArgs),
+    ...createFileOperationsMenuSlice(...menuArgs),
 
     resetSkillEditor: () => {
       set({

web/app/components/workflow/store/workflow/index.ts

@@ -23,6 +23,7 @@ import {
 } from 'zustand'
 import { createStore } from 'zustand/vanilla'
 import { WorkflowContext } from '@/app/components/workflow/context'
+import { createSkillEditorSlice } from '@/app/components/workflow/skill/store'
 import { createChatVariableSlice } from './chat-variable-slice'
 import { createInspectVarsSlice } from './debug/inspect-vars-slice'
 import { createEnvVariableSlice } from './env-variable-slice'
@@ -41,7 +42,6 @@ import { createWorkflowSlice } from './workflow-slice'
 export type SliceFromInjection
   = Partial<WorkflowAppSliceShape>
     & Partial<RagPipelineSliceShape>
-    & Partial<SkillEditorSliceShape>
 
 export type Shape
   = ChatVariableSliceShape
@@ -57,6 +57,7 @@ export type Shape
     & WorkflowSliceShape
     & InspectVarsSliceShape
     & LayoutSliceShape
+    & SkillEditorSliceShape
     & SliceFromInjection
 
 export type InjectWorkflowStoreSliceFn = StateCreator<SliceFromInjection>
@@ -82,6 +83,7 @@ export const createWorkflowStore = (params: CreateWorkflowStoreParams) => {
     ...createWorkflowSlice(...args),
     ...createInspectVarsSlice(...args),
     ...createLayoutSlice(...args),
+    ...createSkillEditorSlice(...args),
     ...(injectWorkflowStoreSliceFn?.(...args) || {} as SliceFromInjection),
   }))
 }