List Bob content plans

curl "https://postiv.ai/api/public/content-plans?integrationId=123" \
  -H "Authorization: Bearer pk_postiv_..."

{
  "success": true,
  "integrationId": 1234,
  "weekStart": "2026-07-13",
  "weeksRequested": 1,
  "plans": [
    {
      "id": "p1...",
      "profileId": 1234,
      "weekStart": "2026-07-13",
      "status": "active",
      "items": [
        {
          "id": "i1...",
          "position": 0,
          "topic": "Why most B2B content fails",
          "angle": "contrarian",
          "goal": "engagement",
          "hookPattern": "myth-vs-fact",
          "targetDay": "2026-07-14",
          "status": "planned",
          "postId": null,
          "carouselId": null,
          "contentFormat": "text",
          "pillar": "Content Strategy"
        }
      ]
    }
  ],
  "pillarDistribution": [
    {
      "pillar": "Content Strategy",
      "count": 1,
      "percentage": 100
    }
  ],
  "hasPreviousWeek": true,
  "hasNextWeek": false
}