diff --git a/internal/api/handlers_info.go b/internal/api/handlers_info.go
index 33a0b78..35aea93 100644
--- a/internal/api/handlers_info.go
+++ b/internal/api/handlers_info.go
@@ -23,6 +23,7 @@ func (s *Server) handleInfo(w http.ResponseWriter, r *http.Request) {
 		"name":    version.Name,
 		"version": version.Version,
 		"author":  version.Author,
+		"sudo":    os.Geteuid() == 0,
 	})
 }
 
@@ -609,3 +610,111 @@ func (s *Server) handleRunningProcesses(w http.ResponseWriter, r *http.Request)
 
 	writeJSON(w, map[string]interface{}{"processes": procs})
 }
+
+type sysMetrics struct {
+	CPUPercent float64 `json:"cpu_percent"`
+	MemPercent float64 `json:"mem_percent"`
+	MemUsedMB  float64 `json:"mem_used_mb"`
+	MemTotalMB float64 `json:"mem_total_mb"`
+	NetRxKBs   float64 `json:"net_rx_kbs"`
+	NetTxKBs   float64 `json:"net_tx_kbs"`
+}
+
+var (
+	lastCPU    [2]float64
+	lastNet    [2]float64
+	lastNetTs  time.Time
+	lastCPUSet bool
+)
+
+func (s *Server) handleSystemMetrics(w http.ResponseWriter, r *http.Request) {
+	m := sysMetrics{}
+
+	// CPU from /proc/stat
+	if data, err := os.ReadFile("/proc/stat"); err == nil {
+		line := strings.Split(string(data), "\n")[0]
+		fields := strings.Fields(line)
+		if len(fields) >= 5 {
+			var idle, total float64
+			for i := 1; i < len(fields) && i <= 4; i++ {
+				var v float64
+				fmt.Sscanf(fields[i], "%f", &v)
+				total += v
+				if i == 4 {
+					idle = v
+				}
+			}
+			if lastCPUSet {
+				dIdle := idle - lastCPU[0]
+				dTotal := total - lastCPU[1]
+				if dTotal > 0 {
+					m.CPUPercent = (1 - dIdle/dTotal) * 100
+				}
+			}
+			lastCPU = [2]float64{idle, total}
+			lastCPUSet = true
+		}
+	}
+
+	// Memory from /proc/meminfo
+	if data, err := os.ReadFile("/proc/meminfo"); err == nil {
+		var memTotal, memAvailable float64
+		for _, line := range strings.Split(string(data), "\n") {
+			fields := strings.Fields(line)
+			if len(fields) < 2 {
+				continue
+			}
+			var v float64
+			fmt.Sscanf(fields[1], "%f", &v)
+			switch fields[0] {
+			case "MemTotal:":
+				memTotal = v
+			case "MemAvailable:":
+				memAvailable = v
+			}
+		}
+		if memTotal > 0 {
+			m.MemTotalMB = memTotal / 1024
+			m.MemUsedMB = (memTotal - memAvailable) / 1024
+			m.MemPercent = (memTotal - memAvailable) / memTotal * 100
+		}
+	}
+
+	// Network from /proc/net/dev
+	if data, err := os.ReadFile("/proc/net/dev"); err == nil {
+		var rxBytes, txBytes float64
+		for _, line := range strings.Split(string(data), "\n")[2:] {
+			fields := strings.Fields(line)
+			if len(fields) < 10 {
+				continue
+			}
+			iface := strings.TrimSuffix(fields[0], ":")
+			if iface == "lo" {
+				continue
+			}
+			var rx, tx float64
+			fmt.Sscanf(fields[1], "%f", &rx)
+			fmt.Sscanf(fields[9], "%f", &tx)
+			rxBytes += rx
+			txBytes += tx
+		}
+		now := time.Now()
+		if !lastNetTs.IsZero() {
+			elapsed := now.Sub(lastNetTs).Seconds()
+			if elapsed > 0 {
+				m.NetRxKBs = (rxBytes - lastNet[0]) / 1024 / elapsed
+				m.NetTxKBs = (txBytes - lastNet[1]) / 1024 / elapsed
+				if m.NetRxKBs < 0 {
+					m.NetRxKBs = 0
+				}
+				if m.NetTxKBs < 0 {
+					m.NetTxKBs = 0
+				}
+			}
+		}
+		lastNet = [2]float64{rxBytes, txBytes}
+		lastNetTs = now
+	}
+
+	writeJSON(w, m)
+}
diff --git a/internal/api/server.go b/internal/api/server.go
index 02a0a1c..57e4dfb 100644
--- a/internal/api/server.go
+++ b/internal/api/server.go
@@ -116,6 +116,7 @@ func (s *Server) routes() {
 	s.mux.HandleFunc("/api/providers/quota", s.handleProvidersQuota)
 	s.mux.HandleFunc("/api/recent-commands", s.handleRecentCommands)
 	s.mux.HandleFunc("/api/running-processes", s.handleRunningProcesses)
+	s.mux.HandleFunc("/api/system/metrics", s.handleSystemMetrics)
 }
 
 func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
diff --git a/internal/version/version.go b/internal/version/version.go
index 5c5e1cc..e5377aa 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -7,7 +7,7 @@ import (
 
 const (
 	Name    = "muyue"
-	Version = "0.3.2"
+	Version = "0.3.3"
 	Author  = "La Légion de Muyue"
 )
 
diff --git a/web/src/api/client.js b/web/src/api/client.js
index 68b3710..9affabf 100644
--- a/web/src/api/client.js
+++ b/web/src/api/client.js
@@ -40,6 +40,7 @@ const api = {
   getProvidersQuota: () => request('/providers/quota'),
   getRecentCommands: () => request('/recent-commands'),
   getRunningProcesses: () => request('/running-processes'),
+  getSystemMetrics: () => request('/system/metrics'),
   savePreferences: (prefs) => request('/preferences', { method: 'PUT', body: JSON.stringify(prefs) }),
   saveProfile: (profile) => request('/config/profile', { method: 'PUT', body: JSON.stringify(profile) }),
   saveProvider: (provider) => request('/config/provider', { method: 'PUT', body: JSON.stringify(provider) }),
diff --git a/web/src/components/App.jsx b/web/src/components/App.jsx
index aca54b0..5d9f4db 100644
--- a/web/src/components/App.jsx
+++ b/web/src/components/App.jsx
@@ -1,4 +1,4 @@
-import { useState, useEffect, useCallback, useMemo } from 'react'
+import { useState, useEffect, useCallback, useMemo, useRef } from 'react'
 import { LayoutDashboard, Sparkles, Terminal, Settings } from 'lucide-react'
 import api from '../api/client'
 import { getTheme, applyTheme } from '../themes'
@@ -13,6 +13,9 @@ export default function App() {
   const [activeTab, setActiveTab] = useState('dash')
   const [info, setInfo] = useState({})
   const [clock, setClock] = useState(new Date())
+  const [isSudo, setIsSudo] = useState(false)
+  const [dashRefreshKey, setDashRefreshKey] = useState(0)
+  const dashRefreshRef = useRef(null)
   const [updates, setUpdates] = useState([])
   const [tools, setTools] = useState([])
   const [config, setConfig] = useState(null)
@@ -27,7 +30,7 @@ export default function App() {
   ], [t])
 
   useEffect(() => {
-    api.getInfo().then(setInfo).catch(() => {})
+    api.getInfo().then(d => { setInfo(d); setIsSudo(!!d.sudo) }).catch(() => {})
     api.getTools().then(d => setTools(d.tools || [])).catch(() => {})
     api.getUpdates().then(d => setUpdates(d.updates || [])).catch(() => {})
     api.getConfig().then(d => {
@@ -60,6 +63,11 @@ export default function App() {
       if (map[e.code]) {
         e.preventDefault()
         setActiveTab(map[e.code])
+        return
+      }
+      if (e.ctrlKey && e.code === 'KeyR') {
+        e.preventDefault()
+        if (dashRefreshRef.current) dashRefreshRef.current()
       }
     }
     window.addEventListener('keydown', onKey)
@@ -72,27 +80,21 @@ export default function App() {
   const installed = tools.filter(tool => tool.installed).length
 
   const WINDOW_SHORTCUTS = useMemo(() => ({
-    dash: [
-      { keys: `${layout.keys.ctrl}+${layout.keys.range}`, desc: t('statusbar.switchWindow') },
-    ],
+    dash: [],
     studio: [
       { keys: layout.keys.enter, desc: t('statusbar.sendMessage') },
       { keys: `${layout.keys.shift}+${layout.keys.enter}`, desc: t('statusbar.newLine') },
-      { keys: `${layout.keys.ctrl}+${layout.keys.range}`, desc: t('statusbar.switchWindow') },
     ],
     shell: [
       { keys: layout.keys.enter, desc: t('statusbar.runCommand') },
       { keys: `${layout.keys.up}/${layout.keys.down}`, desc: t('statusbar.commandHistory') },
-      { keys: `${layout.keys.ctrl}+${layout.keys.range}`, desc: t('statusbar.switchWindow') },
-    ],
-    config: [
-      { keys: `${layout.keys.ctrl}+${layout.keys.range}`, desc: t('statusbar.switchWindow') },
     ],
+    config: [],
   }), [layout, t])
 
   const renderContent = () => {
     switch (activeTab) {
-      case 'dash': return <Dashboard api={api} />
+      case 'dash': return <Dashboard api={api} refreshRef={dashRefreshRef} />
       case 'studio': return <Studio api={api} />
       case 'shell': return <Shell api={api} />
       case 'config': return <Config api={api} />
@@ -147,6 +149,12 @@ export default function App() {
 
       <footer className="statusbar">
         <div className="statusbar-left">
+          {isSudo && <span className="statusbar-sudo">⚡ ROOT</span>}
+          {activeTab === 'dash' && (
+            <span className="statusbar-shortcut">
+              <kbd>{layout.keys.ctrl}+R</kbd> refresh
+            </span>
+          )}
           <FooterShortcuts shortcuts={WINDOW_SHORTCUTS[activeTab] || []} />
         </div>
         <div className="statusbar-right">
diff --git a/web/src/components/Dashboard.jsx b/web/src/components/Dashboard.jsx
index fc6d171..9be3e84 100644
--- a/web/src/components/Dashboard.jsx
+++ b/web/src/components/Dashboard.jsx
@@ -1,66 +1,105 @@
-import { useState, useEffect, useCallback } from 'react'
+import { useState, useEffect, useCallback, useRef } from 'react'
 import { useI18n } from '../i18n'
 
-export default function Dashboard({ api }) {
+const MAX_POINTS = 30
+
+function MiniGraph({ data, max, color, label, unit }) {
+  if (!data || data.length < 2) return <div className="dash-graph-empty">collecting...</div>
+  const m = max || Math.max(...data, 1)
+  const w = 100
+  const h = 32
+  const points = data.map((v, i) => {
+    const x = (i / (data.length - 1)) * w
+    const y = h - (v / m) * h
+    return `${x},${y}`
+  }).join(' ')
+  const last = data[data.length - 1]
+  return (
+    <div className="dash-graph-wrap">
+      <div className="dash-graph-header">
+        <span className="dash-graph-label">{label}</span>
+        <span className="dash-graph-value" style={{ color }}>{last.toFixed(1)}{unit}</span>
+      </div>
+      <svg viewBox={`0 0 ${w} ${h}`} className="dash-graph-svg" preserveAspectRatio="none">
+        <polyline fill="none" stroke={color} strokeWidth="1.5" points={points} vectorEffect="non-scaling-stroke" />
+      </svg>
+    </div>
+  )
+}
+
+export default function Dashboard({ api, refreshRef }) {
   const { t } = useI18n()
-  const [tools, setTools] = useState([])
-  const [systemInfo, setSystemInfo] = useState(null)
   const [dashboardStatus, setDashboardStatus] = useState(null)
   const [quota, setQuota] = useState(null)
   const [recentCmds, setRecentCmds] = useState([])
   const [processes, setProcesses] = useState([])
-  const [updates, setUpdates] = useState([])
+  const [metrics, setMetrics] = useState(null)
+  const cpuRef = useRef([])
+  const memRef = useRef([])
+  const netRxRef = useRef([])
+  const netTxRef = useRef([])
 
   const loadData = useCallback(async () => {
     try {
-      const [toolsData, systemData, dashData, quotaData, cmdData, procData, updatesData] = await Promise.all([
-        api.getTools().catch(() => ({ tools: [] })),
-        api.getSystem().catch(() => null),
+      const [dashData, quotaData, cmdData, procData, metricsData] = await Promise.all([
         api.getDashboardStatus().catch(() => null),
         api.getProvidersQuota().catch(() => null),
         api.getRecentCommands().catch(() => ({ commands: [] })),
         api.getRunningProcesses().catch(() => ({ processes: [] })),
-        api.getUpdates().catch(() => ({ updates: [] })),
+        api.getSystemMetrics().catch(() => null),
       ])
-      setTools(toolsData.tools || toolsData || [])
-      setSystemInfo(systemData?.system || systemData)
       setDashboardStatus(dashData)
       setQuota(quotaData?.providers || [])
       setRecentCmds(cmdData.commands || [])
       setProcesses(procData.processes || [])
-      setUpdates(updatesData.updates || updatesData || [])
+      if (metricsData) {
+        setMetrics(metricsData)
+        cpuRef.current = [...cpuRef.current, metricsData.cpu_percent].slice(-MAX_POINTS)
+        memRef.current = [...memRef.current, metricsData.mem_percent].slice(-MAX_POINTS)
+        netRxRef.current = [...netRxRef.current, metricsData.net_rx_kbs].slice(-MAX_POINTS)
+        netTxRef.current = [...netTxRef.current, metricsData.net_tx_kbs].slice(-MAX_POINTS)
+      }
     } catch (err) {
       console.error('Dashboard load error:', err)
     }
   }, [api])
 
-  useEffect(() => { loadData() }, [loadData])
-
-  const installedCount = tools.filter(t => t.installed || t.status === 'installed').length
-  const sys = systemInfo || {}
+  useEffect(() => {
+    loadData()
+    if (refreshRef) refreshRef.current = loadData
+    const iv = setInterval(loadData, 5000)
+    return () => clearInterval(iv)
+  }, [loadData, refreshRef])
 
   const minimax = (quota || []).find(p => p.name === 'minimax')
   const zai = (quota || []).find(p => p.name === 'zai')
 
   return (
     <div className="dash-grid">
-      {/* System */}
-      <div className="dash-card dash-span-2">
+      {/* CPU / RAM / Network Graphs */}
+      <div className="dash-card">
         <div className="dash-card-head">
-          <span className="dash-label">{sys.os || sys.platform || 'System'} · {sys.arch || ''}</span>
-          <button className="sm ghost" onClick={() => api.runScan().then(loadData)}>↻ Rescan</button>
+          <span className="dash-label">CPU</span>
+          <span className="dash-count">{metrics ? metrics.cpu_percent.toFixed(0) : '—'}%</span>
         </div>
-        <div className="dash-tools-row">
-          {tools.slice(0, 12).map((tool, i) => {
-            const ok = tool.installed || tool.status === 'installed'
-            return (
-              <span key={tool.name || i} className={`dash-tool-tag ${ok ? 'ok' : 'missing'}`}>
-                {ok ? '●' : '○'} {tool.name}
-              </span>
-            )
-          })}
-          {tools.length > 12 && <span className="dash-tool-tag">+{tools.length - 12}</span>}
+        <MiniGraph data={cpuRef.current} max={100} color="var(--accent)" label="CPU" unit="%" />
+      </div>
+
+      <div className="dash-card">
+        <div className="dash-card-head">
+          <span className="dash-label">RAM</span>
+          <span className="dash-count">{metrics ? `${metrics.mem_used_mb.toFixed(0)}/${metrics.mem_total_mb.toFixed(0)} MB` : '—'}</span>
         </div>
+        <MiniGraph data={memRef.current} max={100} color="#a78bfa" label="RAM" unit="%" />
+      </div>
+
+      <div className="dash-card">
+        <div className="dash-card-head">
+          <span className="dash-label">Network</span>
+          <span className="dash-count">{metrics ? `↓${metrics.net_rx_kbs.toFixed(0)} ↑${metrics.net_tx_kbs.toFixed(0)} KB/s` : '—'}</span>
+        </div>
+        <MiniGraph data={netRxRef.current} max={null} color="#34d399" label="RX" unit=" KB/s" />
+        <MiniGraph data={netTxRef.current} max={null} color="#f59e0b" label="TX" unit=" KB/s" />
       </div>
 
       {/* API Quota */}
@@ -127,7 +166,7 @@ export default function Dashboard({ api }) {
         </div>
       </div>
 
-      {/* Status (MCP/LSP/Skills) */}
+      {/* Services */}
       <div className="dash-card">
         <div className="dash-card-head">
           <span className="dash-label">Services</span>
@@ -158,24 +197,6 @@ export default function Dashboard({ api }) {
           <span className="dash-empty">Loading...</span>
         )}
       </div>
-
-      {/* Updates */}
-      {updates.length > 0 && (
-        <div className="dash-card dash-span-2">
-          <div className="dash-card-head">
-            <span className="dash-label">Updates Available</span>
-            <span className="dash-count warn">{updates.length}</span>
-          </div>
-          <div className="dash-updates-list">
-            {updates.slice(0, 5).map((u, i) => (
-              <div key={u.name || i} className="dash-update-row">
-                <span className="dash-update-name">{u.name}</span>
-                <span className="dash-update-ver">{u.current || '?'} → {u.latest || '?'}</span>
-              </div>
-            ))}
-          </div>
-        </div>
-      )}
     </div>
   )
 }
diff --git a/web/src/components/OnboardingWizard.jsx b/web/src/components/OnboardingWizard.jsx
index 09d8443..7d7e9df 100644
--- a/web/src/components/OnboardingWizard.jsx
+++ b/web/src/components/OnboardingWizard.jsx
@@ -100,16 +100,14 @@ export default function OnboardingWizard({ api, onComplete }) {
       } else {
         detected.push(...(await fallback()))
       }
-      const merged = [...new Set([...detected.map(n => n.toLowerCase()), ...BASE_EDITORS])]
-      setEditorList(merged)
+      setEditorList([...new Set(detected.map(n => n.toLowerCase()))])
       setScanMessage('')
     } catch (err) {
       try {
         setScanMessage('Fallback: scan local...')
         const data = await api.getEditors()
         const detected = (data.editors || []).map(e => e.name)
-        const merged = [...new Set([...detected, ...BASE_EDITORS])]
-        setEditorList(merged)
+        setEditorList([...new Set(detected)])
       } catch {}
       setScanMessage('')
     }
@@ -325,7 +323,7 @@ export default function OnboardingWizard({ api, onComplete }) {
             <div className="onboarding-step">
               <div className="onboarding-title">Quel éditeur utilisez-vous ?</div>
               <div className="onboarding-desc">
-                {scanning ? 'Détection en cours...' : 'Sélectionnez votre éditeur ou tapez-en un autre ci-dessous.'}
+                {scanning ? 'Détection en cours...' : 'Sélectionnez votre éditeur.'}
               </div>
               <div className="onboarding-chips">
                 {editorList.map(ed => (
@@ -338,14 +336,6 @@ export default function OnboardingWizard({ api, onComplete }) {
                   </div>
                 ))}
               </div>
-              <input
-                className="onboarding-input"
-                style={{ marginTop: 12 }}
-                placeholder="Autre éditeur..."
-                value={answers.editor}
-                onChange={e => setAnswers(a => ({ ...a, editor: e.target.value }))}
-                autoFocus
-              />
             </div>
           )}
 
diff --git a/web/src/styles/global.css b/web/src/styles/global.css
index 0213d00..82cabb0 100644
--- a/web/src/styles/global.css
+++ b/web/src/styles/global.css
@@ -169,6 +169,12 @@ input::placeholder { color: var(--text-disabled); }
   color: var(--text-disabled);
 }
 .statusbar-left, .statusbar-right { display: flex; align-items: center; gap: 12px; }
+.statusbar-sudo {
+  font-size: 10px; font-weight: 700; font-family: var(--font-mono);
+  padding: 1px 6px; border-radius: 3px;
+  background: rgba(239, 68, 68, 0.15); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.3);
+  text-transform: uppercase; letter-spacing: 0.5px;
+}
 .statusbar-shortcut { display: inline-flex; align-items: center; gap: 4px; }
 .statusbar-shortcut kbd {
   display: inline-block; padding: 1px 5px; border-radius: 3px;
@@ -637,6 +643,14 @@ input::placeholder { color: var(--text-disabled); }
 
 .dash-empty { font-size: 11px; color: var(--text-disabled); }
 
+/* Graph */
+.dash-graph-wrap { display: flex; flex-direction: column; gap: 2px; }
+.dash-graph-header { display: flex; justify-content: space-between; align-items: center; }
+.dash-graph-label { font-size: 9px; color: var(--text-disabled); text-transform: uppercase; }
+.dash-graph-value { font-size: 10px; font-family: var(--font-mono); font-weight: 600; }
+.dash-graph-svg { width: 100%; height: 32px; }
+.dash-graph-empty { font-size: 10px; color: var(--text-disabled); text-align: center; padding: 8px 0; }
+
 /* Legacy dashboard kept for reference */
 .dashboard-layout { display: flex; flex-direction: column; height: 100%; }
 .dashboard-content { flex: 1; overflow-y: auto; }