chore: aktuellen Live-Stand sichern (Admin-API, Services, Auth-Erweiterungen)

Sichert den bisher uncommitteten Produktionsstand des Kundenbereich-Servers,
damit kuenftige Deploys (git reset --hard) nichts mehr verwerfen.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

server/routes/admin/gitea.js

@@ -0,0 +1,37 @@
+import { Router } from 'express'
+import { syncReposToAppwrite, fetchRepoReadme } from '../../services/giteaAdmin.js'
+import { requireAppwriteStaff } from '../../middleware/appwriteStaff.js'
+
+const router = Router()
+
+router.use(requireAppwriteStaff)
+
+router.post('/sync-repos', async (_req, res) => {
+  try {
+    const result = await syncReposToAppwrite()
+    return res.json({ ok: true, ...result })
+  } catch (err) {
+    const status = err.status || 500
+    return res.status(status).json({ error: err.message || 'Gitea-Sync fehlgeschlagen' })
+  }
+})
+
+router.get('/repo-readme', async (req, res) => {
+  const repoFullName = String(req.query.repoFullName || '').trim()
+  if (!repoFullName) {
+    return res.status(400).json({ error: 'repoFullName ist erforderlich' })
+  }
+
+  try {
+    const readme = await fetchRepoReadme(repoFullName)
+    if (!readme) {
+      return res.json({ ok: true, found: false, repoFullName })
+    }
+    return res.json({ ok: true, found: true, repoFullName, ...readme })
+  } catch (err) {
+    const status = err.status || 500
+    return res.status(status).json({ error: err.message || 'README konnte nicht geladen werden' })
+  }
+})
+
+export default router