List tasks

curl --request GET \
  --url http://localhost:3000/api/tasks/me \
  --header 'Authorization: Bearer <token>'

[
  {
    "task": {
      "id": 42,
      "user_id": "a3f1c2d4-0e5b-4a7f-b891-2c3d4e5f6a7b",
      "challenge_template_id": null,
      "title": "Meditate for 10 minutes",
      "description": "Morning meditation session",
      "points": 20,
      "is_daily_routine": true,
      "created_at": "2026-03-17T08:00:00.000Z",
      "updated_at": "2026-03-17T08:00:00.000Z"
    },
    "completion_count": 7
  },
  {
    "task": {
      "id": 43,
      "user_id": "a3f1c2d4-0e5b-4a7f-b891-2c3d4e5f6a7b",
      "challenge_template_id": null,
      "title": "Read 20 pages",
      "description": null,
      "points": 10,
      "is_daily_routine": false,
      "created_at": "2026-03-17T09:30:00.000Z",
      "updated_at": "2026-03-17T09:30:00.000Z"
    },
    "completion_count": 3
  }
]

{
  "error": "User not authenticated"
}