Admin sync

curl -i -X POST "http://localhost:3000/api/admin/sync" \
  -H "Cookie: gump_admin_session=<session-token>"

curl -i -X POST "http://localhost:3000/api/admin/sync?dryRun=1" \
  -H "Cookie: gump_admin_session=<session-token>"

{
  "changedCount": 7,
  "discoveredSlugs": [
    "blog/ai-materials-first-principles",
    "travel/2023-california-highway-1"
  ],
  "archivedSlugs": [],
  "dryRun": false,
  "modules": {
    "blog": {
      "changedCount": 3,
      "discoveredSlugs": ["ai-materials-first-principles"],
      "archivedSlugs": [],
      "dryRun": false
    },
    "travel": {
      "changedCount": 4,
      "discoveredSlugs": ["2023-california-highway-1"],
      "archivedSlugs": [],
      "dryRun": false
    }
  }
}

{
  "error": "Unauthorized"
}

{
  "error": "Sync failed"
}