diff --git a/web/src/components/Shell.jsx b/web/src/components/Shell.jsx
index 9c6462b..206dce6 100644
--- a/web/src/components/Shell.jsx
+++ b/web/src/components/Shell.jsx
@@ -6,21 +6,18 @@ import { WebglAddon } from '@xterm/addon-webgl'
 import { SearchAddon } from '@xterm/addon-search'
 import { Unicode11Addon } from '@xterm/addon-unicode11'
 import { ImageAddon } from '@xterm/addon-image'
-import { Plus, X, Monitor, Globe, ChevronDown, Pencil, Trash2, Search, Copy, Send, Eye, Bot, Columns, Rows, Maximize2 } from 'lucide-react'
+import { Plus, X, Monitor, Globe, ChevronDown, Pencil, Trash2, Search, Copy, Send, Eye, Bot } from 'lucide-react'
 import '@xterm/xterm/css/xterm.css'
 import { useI18n } from '../i18n'
 import mermaid from 'mermaid'
-import FileEditor from './FileEditor'
 
 mermaid.initialize({ startOnLoad: false, theme: 'dark', securityLevel: 'loose', fontFamily: 'var(--font-mono)' })
 
 const AI_TAB_ID = 0
 const MAX_TABS = 7
-const MAX_PANES = 4
 const SHELL_MAX_TOKENS = 100000
 const SHELL_AI_COMMANDS = ['/clear', '/help', '/model', '/model change']
 const TABS_STORAGE_KEY = 'muyue_shell_tabs'
-const LAYOUT_STORAGE_KEY = 'muyue_shell_layout'
 const TERMINAL_BUFFER_KEY = 'muyue_terminal_buffers'
 
 function renderContent(text) {
@@ -480,107 +477,6 @@ export default function Shell({ api, isSudo }) {
   const _streamRafRef = useRef(null)
   const _streamPendingRef = useRef(null)
 
-  const [splitLayout, setSplitLayout] = useState(() => {
-    try {
-      const raw = localStorage.getItem(LAYOUT_STORAGE_KEY)
-      if (raw) return JSON.parse(raw)
-    } catch {}
-    return null
-  })
-  const [editingFile, setEditingFile] = useState(null)
-  const [agentSessions, setAgentSessions] = useState([])
-
-  const paneCount = useMemo(() => {
-    const count = (node) => {
-      if (!node) return 1
-      if (node.type === 'leaf') return 1
-      return count(node.children?.[0]) + count(node.children?.[1])
-    }
-    return count(splitLayout)
-  }, [splitLayout])
-
-  const splitPane = useCallback((direction) => {
-    if (paneCount >= MAX_PANES) return
-    const activeId = activeTabRef.current
-    setSplitLayout(prev => {
-      if (!prev) {
-        return { type: 'split', direction, ratio: 0.5, activePane: activeId, children: [
-          { type: 'leaf', tabId: activeId },
-          { type: 'leaf', tabId: null },
-        ]}
-      }
-      const clone = JSON.parse(JSON.stringify(prev))
-      const findAndSplit = (node) => {
-        if (node.type === 'leaf' && node.tabId === activeId) {
-          return { type: 'split', direction, ratio: 0.5, activePane: activeId, children: [
-            { type: 'leaf', tabId: activeId },
-            { type: 'leaf', tabId: null },
-          ]}
-        }
-        if (node.children) {
-          return { ...node, children: node.children.map(findAndSplit) }
-        }
-        return node
-      }
-      return findAndSplit(clone)
-    })
-  }, [paneCount])
-
-  const removePane = useCallback((tabId) => {
-    setSplitLayout(prev => {
-      if (!prev) return null
-      if (prev.type === 'leaf') return null
-      const clone = JSON.parse(JSON.stringify(prev))
-      const removeFromTree = (node) => {
-        if (node.type !== 'split') return node
-        const left = node.children[0]
-        const right = node.children[1]
-        const leftIsTarget = left.type === 'leaf' && left.tabId === tabId
-        const rightIsTarget = right.type === 'leaf' && right.tabId === tabId
-        if (leftIsTarget) return removeFromTree(right)
-        if (rightIsTarget) return removeFromTree(left)
-        return { ...node, children: [removeFromTree(left), removeFromTree(right)] }
-      }
-      const result = removeFromTree(clone)
-      if (result.type === 'leaf' && result.tabId === null) return null
-      if (result.type === 'split' && (!result.children || result.children.length < 2)) return result.children?.[0] || null
-      return result
-    })
-  }, [])
-
-  const assignPaneTab = useCallback((paneLeaf, tabId) => {
-    setSplitLayout(prev => {
-      if (!prev) return prev
-      const clone = JSON.parse(JSON.stringify(prev))
-      const assign = (node) => {
-        if (node === paneLeaf) return { ...node, tabId }
-        if (node.children) return { ...node, children: node.children.map(assign) }
-        return node
-      }
-      return assign(clone)
-    })
-  }, [])
-
-  useEffect(() => {
-    if (splitLayout) {
-      localStorage.setItem(LAYOUT_STORAGE_KEY, JSON.stringify(splitLayout))
-    } else {
-      localStorage.removeItem(LAYOUT_STORAGE_KEY)
-    }
-  }, [splitLayout])
-
-  useEffect(() => {
-    api.getAgentSessions?.().then(d => {
-      setAgentSessions(d?.sessions || [])
-    }).catch(() => {})
-    const iv = setInterval(() => {
-      api.getAgentSessions?.().then(d => {
-        setAgentSessions(d?.sessions || [])
-      }).catch(() => {})
-    }, 5000)
-    return () => clearInterval(iv)
-  }, [])
-
   const _flushStreamUpdate = useCallback(() => {
     _streamRafRef.current = null
     const pending = _streamPendingRef.current
@@ -922,22 +818,6 @@ export default function Shell({ api, isSudo }) {
         return
       }
 
-      if (ctrl && e.shiftKey && e.key === 'D') {
-        const shellTab = document.querySelector('.shell-layout')
-        if (!shellTab || shellTab.closest('.tab-hidden')) return
-        e.preventDefault()
-        splitPane('vertical')
-        return
-      }
-
-      if (ctrl && e.shiftKey && e.key === 'H') {
-        const shellTab = document.querySelector('.shell-layout')
-        if (!shellTab || shellTab.closest('.tab-hidden')) return
-        e.preventDefault()
-        splitPane('horizontal')
-        return
-      }
-
       if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') return
       if (!e.altKey && !(e.key === 'Tab' && e.shiftKey)) return
 
@@ -1438,27 +1318,6 @@ Sois concret : cite les vraies versions, les vrais chemins, les vrais nombres. L
                 {zoomLevel > 0 ? '+' : ''}{zoomLevel > 0 ? zoomLevel * 2 : zoomLevel * 2}px
               </span>
             )}
-            {paneCount < MAX_PANES && (
-              <>
-                <button className="shell-split-btn" onClick={() => splitPane('vertical')} title="Split Vertical (Ctrl+Shift+D)">
-                  <Columns size={14} />
-                </button>
-                <button className="shell-split-btn" onClick={() => splitPane('horizontal')} title="Split Horizontal (Ctrl+Shift+H)">
-                  <Rows size={14} />
-                </button>
-              </>
-            )}
-            {splitLayout && (
-              <button className="shell-split-btn" onClick={() => setSplitLayout(null)} title="Unsplit">
-                <Maximize2 size={14} />
-              </button>
-            )}
-            {agentSessions.length > 0 && (
-              <span className="shell-agent-indicator" title={`${agentSessions.length} agent(s) actif(s)`}>
-                <Bot size={12} />
-                <span className="shell-agent-count">{agentSessions.length}</span>
-              </span>
-            )}
             {tabs.length < MAX_TABS && (
               <div className="shell-new-tab-wrapper">
                 <button className="shell-new-tab-btn" onClick={() => setShowMenu(!showMenu)} title={t('shell.newTab')}>
@@ -1525,59 +1384,34 @@ Sois concret : cite les vraies versions, les vrais chemins, les vrais nombres. L
           </div>
         </div>
 
-        <div className={`shell-xterm-wrapper ${splitLayout ? 'has-splits' : ''}`}>
-          {editingFile && (
-            <FileEditor api={api} filePath={editingFile} onClose={() => setEditingFile(null)} />
-          )}
-          {!editingFile && (
-            splitLayout ? (
-              <SplitPaneRenderer
-                node={splitLayout}
-                tabs={tabs}
-                activeTab={activeTab}
-                setActiveTab={setActiveTab}
-                showSearch={showSearch}
-                searchText={searchText}
-                searchInputRef={searchInputRef}
-                handleSearchChange={handleSearchChange}
-                handleSearchNext={handleSearchNext}
-                handleSearchPrev={handleSearchPrev}
-                handleCloseSearch={handleCloseSearch}
-                removePane={removePane}
-                onLayoutChange={setSplitLayout}
+        <div className="shell-xterm-wrapper">
+          {showSearch && (
+            <div className="shell-search-bar">
+              <Search size={14} className="shell-search-icon" />
+              <input
+                ref={searchInputRef}
+                className="shell-search-input"
+                value={searchText}
+                onChange={e => handleSearchChange(e.target.value)}
+                onKeyDown={e => {
+                  if (e.key === 'Enter') { e.shiftKey ? handleSearchPrev() : handleSearchNext() }
+                  if (e.key === 'Escape') handleCloseSearch()
+                  e.stopPropagation()
+                }}
+                placeholder="Rechercher..."
               />
-            ) : (
-              <>
-                {showSearch && (
-                  <div className="shell-search-bar">
-                    <Search size={14} className="shell-search-icon" />
-                    <input
-                      ref={searchInputRef}
-                      className="shell-search-input"
-                      value={searchText}
-                      onChange={e => handleSearchChange(e.target.value)}
-                      onKeyDown={e => {
-                        if (e.key === 'Enter') { e.shiftKey ? handleSearchPrev() : handleSearchNext() }
-                        if (e.key === 'Escape') handleCloseSearch()
-                        e.stopPropagation()
-                      }}
-                      placeholder="Rechercher..."
-                    />
-                    <button className="shell-search-nav" onClick={handleSearchPrev} title="Précédent (Shift+Entrée)">↑</button>
-                    <button className="shell-search-nav" onClick={handleSearchNext} title="Suivant (Entrée)">↓</button>
-                    <button className="shell-search-close" onClick={handleCloseSearch}><X size={14} /></button>
-                  </div>
-                )}
-                {tabs.map(tab => (
-                  <div
-                    key={tab.id}
-                    id={`terminal-${tab.id}`}
-                    className={`shell-xterm-instance${activeTab === tab.id ? ' active' : ''}`}
-                  />
-                ))}
-              </>
-            )
+              <button className="shell-search-nav" onClick={handleSearchPrev} title="Précédent (Shift+Entrée)">↑</button>
+              <button className="shell-search-nav" onClick={handleSearchNext} title="Suivant (Entrée)">↓</button>
+              <button className="shell-search-close" onClick={handleCloseSearch}><X size={14} /></button>
+            </div>
           )}
+          {tabs.map(tab => (
+            <div
+              key={tab.id}
+              id={`terminal-${tab.id}`}
+              className={`shell-xterm-instance${activeTab === tab.id ? ' active' : ''}`}
+            />
+          ))}
         </div>
       </div>
 
@@ -1941,158 +1775,3 @@ const ShellAIMessage = memo(function ShellAIMessage({ msg, sendToTerminal, termi
     </div>
   )
 })
-
-function SplitPaneRenderer({ node, tabs, activeTab, setActiveTab, showSearch, searchText, searchInputRef, handleSearchChange, handleSearchNext, handleSearchPrev, handleCloseSearch, removePane, onLayoutChange }) {
-  if (!node) return null
-
-  if (node.type === 'leaf') {
-    const tabId = node.tabId
-    const tab = tabId ? tabs.find(t => t.id === tabId) : null
-    const isActive = activeTab === tabId
-
-    if (!tab && tabId !== null) {
-      const fallbackTab = tabs[0]
-      if (fallbackTab) {
-        return (
-          <div className="split-pane-leaf" onClick={() => setActiveTab(fallbackTab.id)}>
-            <div id={`terminal-${fallbackTab.id}`} className={`shell-xterm-instance${activeTab === fallbackTab.id ? ' active' : ''}`} />
-          </div>
-        )
-      }
-    }
-
-    if (!tab) {
-      return (
-        <div className="split-pane-leaf empty">
-          <div className="split-pane-empty">
-            <Monitor size={24} style={{ opacity: 0.3 }} />
-            <span style={{ fontSize: 12, color: 'var(--text-tertiary)', marginTop: 8 }}>
-              Select a tab for this pane
-            </span>
-            <div style={{ display: 'flex', gap: 4, marginTop: 8 }}>
-              {tabs.slice(0, 4).map(t => (
-                <button key={t.id} className="sm ghost" onClick={() => { onLayoutChange(prev => assignLeafTab(prev, node, t.id)) }}>
-                  {t.name}
-                </button>
-              ))}
-            </div>
-          </div>
-        </div>
-      )
-    }
-
-    return (
-      <div className={`split-pane-leaf ${isActive ? 'active' : ''}`} onClick={() => setActiveTab(tabId)}>
-        <div className="split-pane-header">
-          <span className="split-pane-title">{tab.name}</span>
-          <button className="split-pane-close" onClick={(e) => { e.stopPropagation(); removePane(tabId) }}>
-            <X size={10} />
-          </button>
-        </div>
-        <div className="split-pane-content">
-          <div id={`terminal-${tabId}`} className="shell-xterm-instance active" />
-        </div>
-      </div>
-    )
-  }
-
-  if (node.type === 'split') {
-    const dir = node.direction === 'horizontal' ? 'row' : 'column'
-
-    return (
-      <div className={`split-pane-split ${dir}`} style={{ flex: 1 }}>
-        <div className="split-pane-child" style={{ flex: node.ratio || 0.5, overflow: 'hidden' }}>
-          <SplitPaneRenderer
-            node={node.children?.[0]}
-            tabs={tabs}
-            activeTab={activeTab}
-            setActiveTab={setActiveTab}
-            showSearch={showSearch}
-            searchText={searchText}
-            searchInputRef={searchInputRef}
-            handleSearchChange={handleSearchChange}
-            handleSearchNext={handleSearchNext}
-            handleSearchPrev={handleSearchPrev}
-            handleCloseSearch={handleCloseSearch}
-            removePane={removePane}
-            onLayoutChange={onLayoutChange}
-          />
-        </div>
-        <div
-          className="split-pane-resizer"
-          onMouseDown={(e) => {
-            e.preventDefault()
-            const parent = e.target.parentElement
-            const startX = e.clientX
-            const startY = e.clientY
-            const startRatio = node.ratio || 0.5
-            const isVertical = node.direction === 'vertical'
-            const parentSize = isVertical ? parent.offsetWidth : parent.offsetHeight
-
-            const onMouseMove = (me) => {
-              const delta = isVertical ? (me.clientX - startX) : (me.clientY - startY)
-              const newRatio = Math.max(0.15, Math.min(0.85, startRatio + delta / parentSize))
-              onLayoutChange(prev => updateSplitRatio(prev, node, newRatio))
-            }
-
-            const onMouseUp = () => {
-              document.removeEventListener('mousemove', onMouseMove)
-              document.removeEventListener('mouseup', onMouseUp)
-              document.body.style.cursor = ''
-              document.body.style.userSelect = ''
-            }
-
-            document.body.style.cursor = isVertical ? 'col-resize' : 'row-resize'
-            document.body.style.userSelect = 'none'
-            document.addEventListener('mousemove', onMouseMove)
-            document.addEventListener('mouseup', onMouseUp)
-          }}
-        />
-        <div className="split-pane-child" style={{ flex: 1 - (node.ratio || 0.5), overflow: 'hidden' }}>
-          <SplitPaneRenderer
-            node={node.children?.[1]}
-            tabs={tabs}
-            activeTab={activeTab}
-            setActiveTab={setActiveTab}
-            showSearch={showSearch}
-            searchText={searchText}
-            searchInputRef={searchInputRef}
-            handleSearchChange={handleSearchChange}
-            handleSearchNext={handleSearchNext}
-            handleSearchPrev={handleSearchPrev}
-            handleCloseSearch={handleCloseSearch}
-            removePane={removePane}
-            onLayoutChange={onLayoutChange}
-          />
-        </div>
-      </div>
-    )
-  }
-
-  return null
-}
-
-function assignLeafTab(layout, leaf, tabId) {
-  if (!layout) return layout
-  if (layout === leaf) return { ...layout, tabId }
-  if (layout.children) {
-    return {
-      ...layout,
-      children: layout.children.map(c => assignLeafTab(c, leaf, tabId)),
-    }
-  }
-  return layout
-}
-
-function updateSplitRatio(layout, targetNode, ratio) {
-  if (layout === targetNode) {
-    return { ...layout, ratio }
-  }
-  if (layout.children) {
-    return {
-      ...layout,
-      children: layout.children.map(c => updateSplitRatio(c, targetNode, ratio)),
-    }
-  }
-  return layout
-}