This is a bounded, fictional scheduling evaluation. Answer only from the fixture below. Do not call tools, browse, run code, read files or change anything. Return only a JSON object, with no Markdown fences or text outside it.

Repair the supplied initialCsv. It was authored by the evaluator, not by a model. Assign exactly one eligible employee to each of the seven required intervals, with no extra intervals. The fixed assignments must stay unchanged and must NOT be included in scheduleCsv. Every employee must have no overlap and at least 12 hours of rest between occupied work blocks, including fixed assignments before and after the requested rota. Every Monday-starting calendar week must have at most 40 assigned hours, counting all fixed and proposed assignments. Split the overnight Sunday-to-Monday shift across the two calendar weeks. Use local wall-clock arithmetic without time zones, DST or unpaid breaks.

Return these keys:
- findings: a list of problems you found in the supplied roster.
- scheduleCsv: the entire repaired seven-row roster as a JSON string, with the exact header Employee,Start,End and unquoted YYYY-MM-DD HH:mm values.
- weeklyHours: one object per employee and calendar week containing assigned work, with keys employee, week (Monday YYYY-MM-DD), hours. Include all fixed assignments in these totals.
- explanation: a short account of the repair and limitations.

One independent attempt is being measured. Five equally weighted checks (2 points each) were frozen before this run: exact required coverage/no extras, supplied availability, no overlaps/duplicates, minimum rest including boundary shifts, and weekly cap with accurate reported totals including fixed shifts. If a check fails, at most one follow-up containing the detected failures will be allowed; otherwise there will be no correction. Do not infer real employee availability or legal compliance.

Complete synthetic fixture:
{
  "id": "cross-week-repair-2026-09-30",
  "inputOrigin": "synthetic-fixture",
  "rules": {
    "maxHours": 40,
    "minRest": 12,
    "weekStart": "Monday"
  },
  "required": [
    {
      "id": "S1",
      "start": "2026-09-27 22:00",
      "end": "2026-09-28 06:00",
      "eligible": [
        "Alex"
      ]
    },
    {
      "id": "S2",
      "start": "2026-09-28 14:00",
      "end": "2026-09-28 22:00",
      "eligible": [
        "Blair"
      ]
    },
    {
      "id": "S3",
      "start": "2026-09-29 08:00",
      "end": "2026-09-29 16:00",
      "eligible": [
        "Alex"
      ]
    },
    {
      "id": "S4",
      "start": "2026-09-30 08:00",
      "end": "2026-09-30 16:00",
      "eligible": [
        "Alex",
        "Blair"
      ]
    },
    {
      "id": "S5",
      "start": "2026-10-01 08:00",
      "end": "2026-10-01 16:00",
      "eligible": [
        "Alex",
        "Blair"
      ]
    },
    {
      "id": "S6",
      "start": "2026-10-02 08:00",
      "end": "2026-10-02 16:00",
      "eligible": [
        "Alex",
        "Blair"
      ]
    },
    {
      "id": "S7",
      "start": "2026-10-03 08:00",
      "end": "2026-10-03 16:00",
      "eligible": [
        "Alex",
        "Blair"
      ]
    }
  ],
  "fixed": [
    {
      "employee": "Alex",
      "start": "2026-09-26 08:00",
      "end": "2026-09-26 16:00"
    },
    {
      "employee": "Blair",
      "start": "2026-09-27 08:00",
      "end": "2026-09-27 16:00"
    },
    {
      "employee": "Alex",
      "start": "2026-10-04 04:00",
      "end": "2026-10-04 12:00"
    },
    {
      "employee": "Blair",
      "start": "2026-10-04 08:00",
      "end": "2026-10-04 16:00"
    }
  ],
  "initialCsv": "Employee,Start,End\nAlex,2026-09-27 22:00,2026-09-28 06:00\nAlex,2026-09-28 14:00,2026-09-28 22:00\nAlex,2026-09-29 08:00,2026-09-29 16:00\nAlex,2026-09-30 08:00,2026-09-30 16:00\nAlex,2026-09-30 10:00,2026-09-30 12:00\nAlex,2026-10-01 08:00,2026-10-01 16:00\nAlex,2026-10-02 08:00,2026-10-02 16:00\nAlex,2026-10-03 08:00,2026-10-03 16:00"
}