chore: Woodpecker CI entfernt — nur noch Gitea Actions

Woodpecker wird nicht mehr verwendet. Wir migrieren vollstaendig
auf Gitea Actions (gitea.meghsakha.com).

Entfernt:
- woodpecker-server + woodpecker-agent Container (docker-compose.yml)
- woodpecker_data Volume
- backend-core/woodpecker_proxy_api.py (SQLite-DB Proxy)
- admin-core/app/api/admin/infrastructure/woodpecker/route.ts
- admin-core/app/api/webhooks/woodpecker/route.ts
- .woodpecker/main.yml (alte CI-Pipeline-Konfiguration)

Bereinigt:
- ci-cd/page.tsx: Woodpecker-Tab + Status-Karte + State entfernt
- types/infrastructure-modules.ts: Woodpecker-Typen + API-Endpunkte
- DevOpsPipelineSidebar.tsx: Textbeschreibungen auf Gitea Actions
- dashboard/page.tsx: Woodpecker aus Service-Health-Liste
- sbom/page.tsx: Woodpecker aus SBOM-Liste
- navigation.ts: Beschreibung aktualisiert
- .env.example: WOODPECKER_* Variablen entfernt

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

admin-core/components/infrastructure/DevOpsPipelineSidebar.tsx

@@ -92,25 +92,7 @@ function usePipelineLiveStatus(): PipelineLiveStatus | null {
   const [status, setStatus] = useState<PipelineLiveStatus | null>(null)
 
   useEffect(() => {
-    // Optional: Fetch live status from API
-    // For now, return null and display static content
-    // Uncomment below to enable live status fetching
-    /*
-    const fetchStatus = async () => {
-      try {
-        const response = await fetch('/api/admin/infrastructure/woodpecker/status')
-        if (response.ok) {
-          const data = await response.json()
-          setStatus(data)
-        }
-      } catch (error) {
-        console.error('Failed to fetch pipeline status:', error)
-      }
-    }
-    fetchStatus()
-    const interval = setInterval(fetchStatus, 30000) // Poll every 30s
-    return () => clearInterval(interval)
-    */
+    // Live status fetching not yet implemented
   }, [])
 
   return status
@@ -246,7 +228,7 @@ export function DevOpsPipelineSidebar({
           <div className="pt-2 border-t border-slate-200 dark:border-gray-700">
             <div className="text-xs text-slate-500 dark:text-slate-400 px-1">
               {currentTool === 'ci-cd' && (
-                <span>Verwalten Sie Woodpecker Pipelines und Deployments</span>
+                <span>Verwalten Sie Gitea Actions Pipelines und Deployments</span>
               )}
               {currentTool === 'tests' && (
                 <span>Ueberwachen Sie 280+ Tests ueber alle Services</span>
@@ -458,7 +440,7 @@ export function DevOpsPipelineSidebarResponsive({
                 <div className="text-sm text-slate-600 dark:text-slate-400 p-3 bg-slate-50 dark:bg-gray-800 rounded-xl">
                   {currentTool === 'ci-cd' && (
                     <>
-                      <strong className="text-slate-700 dark:text-slate-300">Aktuell:</strong> Woodpecker Pipelines und Deployments verwalten
+                      <strong className="text-slate-700 dark:text-slate-300">Aktuell:</strong> Gitea Actions Pipelines und Deployments verwalten
                     </>
                   )}
                   {currentTool === 'tests' && (