diff --git a/dashboard/src/App.jsx b/dashboard/src/App.jsx
index 35aef32..d6df477 100644
--- a/dashboard/src/App.jsx
+++ b/dashboard/src/App.jsx
@@ -201,11 +201,41 @@ function CustomerDetail({ customerId }) {
   const [deploying, setDeploying] = useState(null)
   const [deployResult, setDeployResult] = useState(null)
   const [editing, setEditing] = useState(false)
+  const [selected, setSelected] = useState(new Set())
+  const [batchDeploying, setBatchDeploying] = useState(false)
+  const [batchProgress, setBatchProgress] = useState({ current: 0, total: 0, module: '' })
 
   if (!customer) return <Loader />
 
   const assignedIds = new Set((customer.extensions || []).map(e => e.id))
   const available = (allExtensions || []).filter(e => !assignedIds.has(e.id))
+  const order = customer.install_order || []
+  const deps = customer.dependencies || {}
+  const exts = customer.extensions || []
+  const installedNames = new Set(exts.filter(e => e.installed_version).map(e => e.name))
+
+  const sorted = [...exts].sort((a, b) => {
+    const ia = order.indexOf(a.name)
+    const ib = order.indexOf(b.name)
+    return (ia === -1 ? 999 : ia) - (ib === -1 ? 999 : ib)
+  })
+
+  const toggleSelect = (id) => {
+    setSelected(prev => {
+      const next = new Set(prev)
+      next.has(id) ? next.delete(id) : next.add(id)
+      return next
+    })
+  }
+
+  const selectAll = () => {
+    const installable = sorted.filter(e => {
+      if (e.installed_version) return false
+      const missing = (deps[e.name] || []).filter(d => !installedNames.has(d))
+      return missing.length === 0
+    })
+    setSelected(new Set(installable.map(e => e.id)))
+  }
 
   const deploy = async (module, version) => {
     setDeploying(module)
@@ -224,6 +254,34 @@ function CustomerDetail({ customerId }) {
     setDeploying(null)
   }
 
+  const batchDeploy = async () => {
+    const toDeploy = sorted.filter(e => selected.has(e.id) && !e.installed_version)
+    setBatchDeploying(true)
+    setBatchProgress({ current: 0, total: toDeploy.length, module: '' })
+    const results = []
+    for (let i = 0; i < toDeploy.length; i++) {
+      const e = toDeploy[i]
+      setBatchProgress({ current: i + 1, total: toDeploy.length, module: e.name })
+      try {
+        const r = await fetch(`${API}/deploy`, {
+          method: 'POST', headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ customer_id: customerId, module: e.name, version: e.latest_version })
+        })
+        const result = await r.json()
+        results.push({ module: e.name, ...result })
+      } catch (err) {
+        results.push({ module: e.name, status: 'error', message: err.message })
+      }
+    }
+    const ok = results.filter(r => r.status === 'ok').length
+    const fail = results.filter(r => r.status !== 'ok').length
+    setDeployResult({ module: `${ok} הרחבות`, status: fail === 0 ? 'ok' : 'error',
+      message: fail > 0 ? `${ok} הצליחו, ${fail} נכשלו` : undefined })
+    setBatchDeploying(false)
+    setSelected(new Set())
+    reload()
+  }
+
   const remove = async (extId) => {
     await fetch(`${API}/customers/${customerId}/extensions/${extId}`, { method: 'DELETE' })
     reload()
@@ -265,38 +323,76 @@ function CustomerDetail({ customerId }) {
         </div>
       )}
 
+      {batchDeploying && (
+        <div className="p-4 rounded-xl mb-6 bg-blue-50 text-blue-800 text-sm font-medium flex items-center gap-3">
+          <Icon name="sync" className="text-base animate-spin" />
+          מתקין {batchProgress.current}/{batchProgress.total}: {batchProgress.module}...
+        </div>
+      )}
+
       <section className="bg-white rounded-xl overflow-hidden">
         <div className="p-6 flex justify-between items-center">
-          <h4 className="font-bold text-slate-900">הרחבות מורשות</h4>
-          <span className="text-xs font-bold text-slate-400 uppercase tracking-widest">{(customer.extensions || []).length} הרחבות</span>
+          <div className="flex items-center gap-3">
+            <h4 className="font-bold text-slate-900">הרחבות מורשות</h4>
+            {selected.size > 0 && (
+              <button onClick={batchDeploy} disabled={batchDeploying}
+                className="deep-action-gradient text-white px-5 py-1.5 rounded-lg text-xs font-bold shadow-sm active:scale-95 transition-all disabled:opacity-50">
+                {batchDeploying ? `מתקין ${batchProgress.current}/${batchProgress.total}...` : `התקן ${selected.size} הרחבות`}
+              </button>
+            )}
+          </div>
+          <div className="flex items-center gap-3">
+            {sorted.some(e => !e.installed_version && (deps[e.name] || []).every(d => installedNames.has(d))) && (
+              <button onClick={selectAll}
+                className="text-xs text-blue-600 hover:text-blue-800 font-medium">
+                בחר הכל
+              </button>
+            )}
+            <span className="text-xs font-bold text-slate-400 uppercase tracking-widest">{exts.length} הרחבות</span>
+          </div>
         </div>
         <table className="w-full text-right border-collapse">
           <thead>
             <tr className="bg-slate-50/50">
-              <th className="px-8 py-4 text-[11px] font-bold text-slate-400 uppercase tracking-widest">שם ההרחבה</th>
+              <th className="px-3 py-4 w-10"></th>
+              <th className="px-4 py-4 text-[11px] font-bold text-slate-400 uppercase tracking-widest">שם ההרחבה</th>
               <th className="px-8 py-4 text-[11px] font-bold text-slate-400 uppercase tracking-widest">מותקנת</th>
               <th className="px-8 py-4 text-[11px] font-bold text-slate-400 uppercase tracking-widest">עדכון זמין</th>
               <th className="px-8 py-4 text-[11px] font-bold text-slate-400 uppercase tracking-widest text-center">פעולות</th>
             </tr>
           </thead>
           <tbody className="divide-y divide-slate-50">
-            {(customer.extensions || []).map(e => {
+            {sorted.map(e => {
               const installed = e.installed_version
               const hasUpdate = installed && e.latest_version && installed !== e.latest_version
+              const missingDeps = (deps[e.name] || []).filter(d => !installedNames.has(d))
+              const blocked = !installed && missingDeps.length > 0
               return (
-                <tr key={e.id} className="hover:bg-slate-50/80 transition-all">
-                  <td className="px-8 py-5">
+                <tr key={e.id} className={`transition-all ${blocked ? 'opacity-40' : 'hover:bg-slate-50/80'}`}>
+                  <td className="px-3 py-5 text-center">
+                    {!installed && !blocked && (
+                      <input type="checkbox" checked={selected.has(e.id)}
+                        onChange={() => toggleSelect(e.id)} disabled={batchDeploying}
+                        className="rounded border-slate-300 text-blue-600 focus:ring-blue-500 cursor-pointer" />
+                    )}
+                  </td>
+                  <td className="px-4 py-5">
                     <div className="flex items-center gap-3">
-                      <div className={`w-8 h-8 rounded-lg flex items-center justify-center ${installed ? 'bg-blue-50 text-blue-700' : 'bg-slate-100 text-slate-400'}`}>
-                        <Icon name="extension" className="text-base" />
+                      <div className={`w-8 h-8 rounded-lg flex items-center justify-center ${installed ? 'bg-blue-50 text-blue-700' : blocked ? 'bg-slate-50 text-slate-300' : 'bg-slate-100 text-slate-400'}`}>
+                        <Icon name={blocked ? 'lock' : 'extension'} className="text-base" />
+                      </div>
+                      <div>
+                        <span className={`font-bold ${blocked ? 'text-slate-400' : 'text-slate-900'}`}>{e.name}</span>
+                        {blocked && (
+                          <p className="text-[10px] text-slate-400 mt-0.5">נדרש: {missingDeps.join(', ')}</p>
+                        )}
                       </div>
-                      <span className="font-bold text-slate-900">{e.name}</span>
                     </div>
                   </td>
                   <td className="px-8 py-5">
                     {installed
                       ? <VersionBadge>v{installed}</VersionBadge>
-                      : <span className="text-sm text-red-500 font-medium">לא מותקן</span>}
+                      : <span className={`text-sm font-medium ${blocked ? 'text-slate-300' : 'text-red-500'}`}>לא מותקן</span>}
                   </td>
                   <td className="px-8 py-5">
                     {hasUpdate
@@ -305,9 +401,11 @@ function CustomerDetail({ customerId }) {
                   </td>
                   <td className="px-8 py-5">
                     <div className="flex items-center justify-center gap-1">
-                      {!installed ? (
+                      {blocked ? (
+                        <span className="text-xs text-slate-300">—</span>
+                      ) : !installed ? (
                         <button onClick={() => deploy(e.name, e.latest_version)}
-                          disabled={deploying === e.name}
+                          disabled={deploying === e.name || batchDeploying}
                           className="deep-action-gradient text-white px-4 py-1.5 rounded-lg text-xs font-bold shadow-sm active:scale-95 transition-all disabled:opacity-50">
                           {deploying === e.name ? '...' : 'התקנה'}
                         </button>
@@ -315,7 +413,7 @@ function CustomerDetail({ customerId }) {
                         <>
                           {hasUpdate && (
                             <button onClick={() => deploy(e.name, e.latest_version)}
-                              disabled={deploying === e.name}
+                              disabled={deploying === e.name || batchDeploying}
                               className="p-2 text-amber-500 hover:text-amber-700 hover:bg-amber-50 rounded-lg transition-all"
                               title="עדכון">
                               <Icon name="upgrade" className="text-lg" />
diff --git a/server.py b/server.py
index 1720926..a128549 100644
--- a/server.py
+++ b/server.py
@@ -53,6 +53,39 @@ MODULES = {
     "SmsIntegration": "sms-integration", "WhatsAppIntegration": "whatsapp-integration",
 }
 
+# Extension dependency tree and install order
+DEPENDENCIES = {
+    'HebrewLanguage': [],
+    'KlearBranding': ['HebrewLanguage'],
+    'PhoneIsraelFormat': ['HebrewLanguage'],
+    'EmailDefaults': ['HebrewLanguage'],
+    'MpdfEngine': ['HebrewLanguage'],
+    'LicenseManager': ['HebrewLanguage'],
+    'LocalDocuments': ['HebrewLanguage'],
+    'GoogleIntegration': ['HebrewLanguage'],
+    'NextCloudIntegration': ['HebrewLanguage'],
+    'NetworkStorageIntegration': ['HebrewLanguage'],
+    'SmsIntegration': ['HebrewLanguage'],
+    'WhatsAppIntegration': ['HebrewLanguage'],
+    'GreenInvoiceBilling': ['HebrewLanguage'],
+    'CrmAssistant': ['HebrewLanguage'],
+    'OfficeAssistant': ['HebrewLanguage'],
+    'LegalCrm': ['HebrewLanguage'],
+    'NetHamishpat': ['HebrewLanguage', 'LegalCrm'],
+    'DigitalSignature': ['HebrewLanguage', 'LegalCrm'],
+    'SmartAssistant': ['HebrewLanguage', 'LegalCrm'],
+}
+
+INSTALL_ORDER = [
+    'HebrewLanguage',
+    'KlearBranding', 'PhoneIsraelFormat', 'EmailDefaults', 'MpdfEngine',
+    'LicenseManager', 'LocalDocuments', 'GoogleIntegration',
+    'NextCloudIntegration', 'NetworkStorageIntegration',
+    'SmsIntegration', 'WhatsAppIntegration', 'GreenInvoiceBilling',
+    'CrmAssistant', 'OfficeAssistant', 'LegalCrm',
+    'NetHamishpat', 'DigitalSignature', 'SmartAssistant',
+]
+
 SSL_CTX = ssl.create_default_context()
 SSL_CTX.check_hostname = False
 SSL_CTX.verify_mode = ssl.CERT_NONE
@@ -406,6 +439,8 @@ class APIHandler(BaseHTTPRequestHandler):
         customer['extensions'] = query("""
             SELECT e.id, e.name, e.composer_name, e.latest_version, ce.installed_version, ce.license_status, ce.auto_update, ce.installed_at
             FROM customer_extensions ce JOIN extensions e ON ce.extension_id = e.id WHERE ce.customer_id = %s ORDER BY e.name""", (cid,))
+        customer['dependencies'] = DEPENDENCIES
+        customer['install_order'] = INSTALL_ORDER
         self._respond(200, customer)
 
     def _create_customer(self, body):