feat(ux): Hostname in Sidebar + CPU-Anzahl neben Load Average

- Sidebar: Hostname unter der Versionsnummer (aus /system/health);
  10px, gedimmt — beim Verwalten mehrerer Boxen sofort erkennbar
- /system/resources: neues Feld num_cpus (via runtime.NumCPU)
- Dashboard Resources-Card: Load-Average-Label zeigt "(N CPU)" —
  1.80 auf 1 CPU ist saturiert, auf 4 CPUs ist es harmlos

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

VERSION

@@ -1 +1 @@
-1.1.98
+1.1.99

cmd/edgeguard-api/main.go

@@ -60,7 +60,7 @@ import (
 	usersvc "git.netcell-it.de/projekte/edgeguard-native/internal/services/users"
 )
 
-var version = "1.1.98"
+var version = "1.1.99"
 
 func main() {
 	addr := os.Getenv("EDGEGUARD_API_ADDR")

cmd/edgeguard-ctl/main.go

@@ -11,7 +11,7 @@ import (
 	"git.netcell-it.de/projekte/edgeguard-native/internal/services/setup"
 )
 
-var version = "1.1.98"
+var version = "1.1.99"
 
 const usage = `edgeguard-ctl — EdgeGuard CLI
 

cmd/edgeguard-scheduler/main.go

@@ -35,7 +35,7 @@ import (
 	"git.netcell-it.de/projekte/edgeguard-native/internal/services/tlscerts"
 )
 
-var version = "1.1.98"
+var version = "1.1.99"
 
 const (
 	// renewTickInterval — how often we re-evaluate expiring certs.

internal/handlers/system.go

@@ -8,6 +8,7 @@ import (
 	"net/http"
 	"os"
 	"os/exec"
+	"runtime"
 	"strconv"
 	"strings"
 	"syscall"
@@ -211,6 +212,7 @@ type resources struct {
 	LoadAvg1     float64 `json:"load_avg_1"`
 	LoadAvg5     float64 `json:"load_avg_5"`
 	LoadAvg15    float64 `json:"load_avg_15"`
+	NumCPUs      int     `json:"num_cpus"`
 	MemTotalKB   int64   `json:"mem_total_kb"`
 	MemAvailKB   int64   `json:"mem_avail_kb"`
 	MemUsedPct   float64 `json:"mem_used_pct"`
@@ -234,7 +236,7 @@ func (h *SystemHandler) Resources(c *gin.Context) {
 // gin.Context erstellen kann. Best-effort: fehlende Quellen lassen
 // die jeweiligen Felder einfach auf 0.
 func computeLocalSystemResources() resources {
-	r := resources{}
+	r := resources{NumCPUs: runtime.NumCPU()}
 	if data, err := os.ReadFile("/proc/loadavg"); err == nil {
 		f := strings.Fields(string(data))
 		if len(f) >= 3 {

management-ui/src/components/Layout/Sidebar.tsx

@@ -112,13 +112,16 @@ export default function Sidebar({ isOpen, onClose }: SidebarProps) {
     queryKey: ['system', 'health'],
     queryFn: async () => {
       const r = await apiClient.get('/system/health')
-      return isEnvelope(r.data) ? (r.data.data as { version?: string }) : { version: '' }
+      return isEnvelope(r.data)
+        ? (r.data.data as { version?: string; hostname?: string })
+        : { version: '' }
     },
     refetchInterval: 60_000,
     refetchOnWindowFocus: true,
     staleTime: 30_000,
   })
-  const version = health?.version || '…'
+  const version  = health?.version  || '…'
+  const hostname = health?.hostname || null
 
   return (
     <nav className={`sidebar${isOpen ? ' open' : ''}`}>
@@ -162,7 +165,14 @@ export default function Sidebar({ isOpen, onClose }: SidebarProps) {
         </div>
       ))}
 
-      <div className="sidebar-version">v{version}</div>
+      <div className="sidebar-version">
+        {hostname && (
+          <div style={{ fontSize: 10, opacity: 0.6, marginBottom: 2, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
+            {hostname}
+          </div>
+        )}
+        v{version}
+      </div>
     </nav>
   )
 }

management-ui/src/pages/Dashboard/index.tsx

@@ -89,6 +89,7 @@ interface ServiceStatus {
 }
 interface Resources {
   load_avg_1: number; load_avg_5: number; load_avg_15: number
+  num_cpus?: number
   mem_total_kb: number; mem_avail_kb: number; mem_used_pct: number
   disk_total_gb: number; disk_free_gb: number; disk_used_pct: number
   conntrack_count: number; conntrack_max: number
@@ -664,7 +665,10 @@ function ResourcesCard({ r }: { r?: Resources | null }) {
       <Card size="small">
         <Row gutter={[16, 8]}>
           <Col xs={12} sm={6} md={4}>
-            <Text type="secondary" style={{ fontSize: 11, textTransform: 'uppercase' }}>{t('dashboard.resCard.load')}</Text>
+            <Text type="secondary" style={{ fontSize: 11, textTransform: 'uppercase' }}>
+              {t('dashboard.resCard.load')}
+              {r.num_cpus != null && <span style={{ fontWeight: 400, opacity: 0.7 }}> ({r.num_cpus} CPU)</span>}
+            </Text>
             <div style={{ fontSize: 18, fontWeight: 600 }}>
               {r.load_avg_1.toFixed(2)} / {r.load_avg_5.toFixed(2)} / {r.load_avg_15.toFixed(2)}
             </div>