refactor(web): defer state reads to usage point for Zustand stores

Apply "defer state reads to usage point" principle to fix real
anti-patterns where state properties were subscribed but only used
in callbacks, not in JSX render:

- env-panel/variable-modal.tsx: envList, envSecrets -> getState()
- chat-variable-panel/variable-modal.tsx: varList -> getState()
- publish-as-knowledge-pipeline-modal.tsx: knowledgeName, knowledgeIcon
  -> lazy useState initialization with getState()
- rag-pipeline-header/index.tsx: remove unused showDebugAndPreviewPanel
  subscription and dead code cleanup

web/app/components/rag-pipeline/components/publish-as-knowledge-pipeline-modal.tsx

@@ -11,7 +11,7 @@ import Button from '@/app/components/base/button'
 import Input from '@/app/components/base/input'
 import Modal from '@/app/components/base/modal'
 import Textarea from '@/app/components/base/textarea'
-import { useStore } from '@/app/components/workflow/store'
+import { useWorkflowStore } from '@/app/components/workflow/store'
 
 type PublishAsKnowledgePipelineModalProps = {
   confirmDisabled?: boolean
@@ -28,10 +28,9 @@ const PublishAsKnowledgePipelineModal = ({
   onConfirm,
 }: PublishAsKnowledgePipelineModalProps) => {
   const { t } = useTranslation()
-  const knowledgeName = useStore(s => s.knowledgeName)
+  const workflowStore = useWorkflowStore()
-  const knowledgeIcon = useStore(s => s.knowledgeIcon)
+  const [pipelineName, setPipelineName] = useState(() => workflowStore.getState().knowledgeName!)
-  const [pipelineName, setPipelineName] = useState(knowledgeName!)
+  const [pipelineIcon, setPipelineIcon] = useState(() => workflowStore.getState().knowledgeIcon!)
-  const [pipelineIcon, setPipelineIcon] = useState(knowledgeIcon!)
   const [description, setDescription] = useState('')
   const [showAppIconPicker, setShowAppIconPicker] = useState(false)
 

web/app/components/rag-pipeline/components/rag-pipeline-header/index.tsx

@@ -3,7 +3,6 @@ import {
   memo,
   useMemo,
 } from 'react'
-import { useTranslation } from 'react-i18next'
 import Header from '@/app/components/workflow/header'
 import {
   useStore,
@@ -13,9 +12,7 @@ import Publisher from './publisher'
 import RunMode from './run-mode'
 
 const RagPipelineHeader = () => {
-  const { t } = useTranslation()
   const pipelineId = useStore(s => s.pipelineId)
-  const showDebugAndPreviewPanel = useStore(s => s.showDebugAndPreviewPanel)
 
   const viewHistoryProps = useMemo(() => {
     return {
@@ -42,7 +39,7 @@ const RagPipelineHeader = () => {
         viewHistoryProps,
       },
     }
-  }, [viewHistoryProps, showDebugAndPreviewPanel, t])
+  }, [viewHistoryProps])
 
   return (
     <Header {...headerProps} />

web/app/components/workflow/panel/chat-variable-panel/components/variable-modal.tsx

@@ -22,7 +22,7 @@ import {
   arrayStringPlaceholder,
   objectPlaceholder,
 } from '@/app/components/workflow/panel/chat-variable-panel/utils'
-import { useStore } from '@/app/components/workflow/store'
+import { useWorkflowStore } from '@/app/components/workflow/store'
 import { cn } from '@/utils/classnames'
 import { checkKeys, replaceSpaceWithUnderscoreInVarNameInput } from '@/utils/var'
 import ArrayBoolList from './array-bool-list'
@@ -58,7 +58,7 @@ const ChatVariableModal = ({
 }: ModalPropsType) => {
   const { t } = useTranslation()
   const { notify } = useContext(ToastContext)
-  const varList = useStore(s => s.conversationVariables)
+  const workflowStore = useWorkflowStore()
   const [name, setName] = React.useState('')
   const [type, setType] = React.useState<ChatVarType>(ChatVarType.String)
   const [value, setValue] = React.useState<any>()
@@ -234,6 +234,7 @@ const ChatVariableModal = ({
   const handleSave = () => {
     if (!checkVariableName(name))
       return
+    const varList = workflowStore.getState().conversationVariables
     if (!chatVar && varList.some(chatVar => chatVar.name === name))
       return notify({ type: 'error', message: 'name is existed' })
     // if (type !== ChatVarType.Object && !value)

web/app/components/workflow/panel/env-panel/variable-modal.tsx

@@ -9,7 +9,7 @@ import Button from '@/app/components/base/button'
 import Input from '@/app/components/base/input'
 import { ToastContext } from '@/app/components/base/toast'
 import Tooltip from '@/app/components/base/tooltip'
-import { useStore } from '@/app/components/workflow/store'
+import { useWorkflowStore } from '@/app/components/workflow/store'
 import { cn } from '@/utils/classnames'
 import { checkKeys, replaceSpaceWithUnderscoreInVarNameInput } from '@/utils/var'
 
@@ -25,8 +25,7 @@ const VariableModal = ({
 }: ModalPropsType) => {
   const { t } = useTranslation()
   const { notify } = useContext(ToastContext)
-  const envList = useStore(s => s.environmentVariables)
+  const workflowStore = useWorkflowStore()
-  const envSecrets = useStore(s => s.envSecrets)
   const [type, setType] = React.useState<'string' | 'number' | 'secret'>('string')
   const [name, setName] = React.useState('')
   const [value, setValue] = React.useState<any>()
@@ -58,6 +57,7 @@ const VariableModal = ({
       return notify({ type: 'error', message: 'value can not be empty' })
 
     // Add check for duplicate name when editing
+    const envList = workflowStore.getState().environmentVariables
     if (env && env.name !== name && envList.some(e => e.name === name))
       return notify({ type: 'error', message: 'name is existed' })
     // Original check for create new variable
@@ -78,10 +78,11 @@ const VariableModal = ({
     if (env) {
       setType(env.value_type)
       setName(env.name)
+      const envSecrets = workflowStore.getState().envSecrets
       setValue(env.value_type === 'secret' ? envSecrets[env.id] : env.value)
       setDescription(env.description)
     }
-  }, [env, envSecrets])
+  }, [env, workflowStore])
 
   return (
     <div