fix: firmware/installer Windows support (label, badge, install cmd)

frontend/src/pages/Firmware.jsx

@@ -231,7 +231,9 @@ export default function Firmware() {
                 <div>
                   <div className="flex items-center gap-2">
                     <Package className="w-4 h-4 text-orange-400" />
-                    <span className="text-white text-sm font-medium">{inst.platform === 'linux' ? 'Linux' : 'OPNsense / FreeBSD'}</span>
+                    <span className="text-white text-sm font-medium">
+                      {inst.platform === 'linux' ? 'Linux' : inst.platform === 'windows' ? 'Windows' : 'OPNsense / FreeBSD'}
+                    </span>
                   </div>
                   <div className="text-xs text-gray-500 mt-1">
                     {inst.filename} — {formatSize(inst.size)} — {new Date(inst.uploaded_at).toLocaleString('de-DE')}
@@ -261,6 +263,23 @@ export default function Firmware() {
           </div>
         )}
 
+        {installerData?.installers?.some(i => i.platform === 'windows') && (
+          <div className="mb-4 bg-gray-950 rounded p-3 relative">
+            <div className="text-[10px] text-gray-500 mb-1">Installationsbefehl (Windows, als Admin in PowerShell):</div>
+            <pre className="text-xs font-mono text-sky-300 whitespace-pre-wrap">{`[Net.ServicePointManager]::ServerCertificateValidationCallback={$true}; $wc=New-Object Net.WebClient; $wc.Headers["X-API-Key"]="YOUR_AGENT_KEY"; $wc.DownloadFile("${BACKEND_URL}/api/v1/installer/download?platform=windows","C:\\rmm-install.zip"); Expand-Archive -Path C:\\rmm-install.zip -DestinationPath C:\\rmm-install -Force; Set-ExecutionPolicy Bypass -Scope Process -Force; C:\\rmm-install\\install.ps1 -BackendURL "${BACKEND_URL}" -APIKey "YOUR_AGENT_KEY" -AgentName "PC-NAME"`}</pre>
+            <button
+              onClick={() => {
+                copyToClipboard(`[Net.ServicePointManager]::ServerCertificateValidationCallback={$true}; $wc=New-Object Net.WebClient; $wc.Headers["X-API-Key"]="YOUR_AGENT_KEY"; $wc.DownloadFile("${BACKEND_URL}/api/v1/installer/download?platform=windows","C:\\rmm-install.zip"); Expand-Archive -Path C:\\rmm-install.zip -DestinationPath C:\\rmm-install -Force; Set-ExecutionPolicy Bypass -Scope Process -Force; C:\\rmm-install\\install.ps1 -BackendURL "${BACKEND_URL}" -APIKey "YOUR_AGENT_KEY" -AgentName "PC-NAME"`)
+                setCopied(true)
+                setTimeout(() => setCopied(false), 2000)
+              }}
+              className="absolute top-2 right-2 text-gray-600 hover:text-sky-400 transition-colors"
+            >
+              {copied ? <Check className="w-4 h-4 text-green-400" /> : <Copy className="w-4 h-4" />}
+            </button>
+          </div>
+        )}
+
         {/* Upload */}
         <div className="flex flex-wrap gap-3 items-end">
           <select
@@ -270,6 +289,7 @@ export default function Firmware() {
           >
             <option value="freebsd">OPNsense / FreeBSD</option>
             <option value="linux">Linux</option>
+            <option value="windows">Windows</option>
           </select>
           <input
             type="file"
@@ -349,7 +369,14 @@ export default function Firmware() {
                   const pending = agent.update_requested
                   const agentPlatform = agent.platform || 'freebsd'
                   const fw = getFwForAgent(agent)
-                  const isLinux = agentPlatform === 'linux'
+                  const isLinux   = agentPlatform === 'linux'
+                  const isWindows = agentPlatform === 'windows'
+                  const platformLabel = isWindows ? 'WIN' : isLinux ? 'LNX' : 'BSD'
+                  const platformColor = isWindows
+                    ? 'text-sky-400 bg-sky-900/30'
+                    : isLinux
+                      ? 'text-blue-400 bg-blue-900/30'
+                      : 'text-orange-400 bg-orange-900/30'
                   return (
                     <div key={agent.id} className="px-4 py-1.5 flex items-center gap-2.5 hover:bg-gray-800/30 border-b border-gray-800/30 last:border-0">
                       <span className={`w-1.5 h-1.5 rounded-full flex-shrink-0 ${
@@ -357,10 +384,8 @@ export default function Firmware() {
                         agent.status === 'stale'  ? 'bg-yellow-400' : 'bg-gray-600'
                       }`} />
                       <span className="text-xs text-gray-300 flex-1 min-w-0 truncate">{agent.name}</span>
-                      <span className={`text-[10px] px-1 py-0.5 rounded flex-shrink-0 ${
+                      <span className={`text-[10px] px-1 py-0.5 rounded flex-shrink-0 ${platformColor}`}>
-                        isLinux ? 'text-blue-400 bg-blue-900/30' : 'text-orange-400 bg-orange-900/30'
+                        {platformLabel}
-                      }`}>
-                        {isLinux ? 'Linux' : 'BSD'}
                       </span>
                       <span className={`text-[10px] font-mono flex-shrink-0 ${outdated ? 'text-yellow-400' : 'text-gray-600'}`}>
                         v{agent.agent_version || '—'}