Claude Haiku 5.5 (effort default (no --effort flag) · thinking on) on Go/no-go departure time from a gridded wind file

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  "result": "I wrote `solve.py` and ran it on the provided input. It produces `answer.json` and `window.svg` in about 0.04 s.\n\n**Result:** course is 39.98\u00b0. Departures 0\u201311 fail (wind or gust limits, at samples t = 6 to 11), and departures 12\u201330 are all ok. So `earliest_ok_h` is 12 and `longest_ok_run` is `[12, 30]`. The headwind rule never fires on this input.\n\n**Checks I ran:** the course matches a hand calculation (atan2(0.841, 1.004) \u2248 39.97\u00b0), and `window.svg` parses as XML and contains both `id=\"timeline\"` and `id=\"best-departure\"`. I have not compared the flags against an independent implementation, and I have not tested fresh inputs.\n\n**Choices I made where the spec was open:**\n- **Time clamping:** I clamp sample times to the grid's time axis as well as lat/lon, following the \"outside a grid axis, clamp\" rule.\n- **`best_departure`:** the spec doesn't define it in `answer.json`. I took it to mean `earliest_ok_h`, and the `best-departure` marker in the SVG points at that hour.\n- **Zero-length passage:** if `passage_hours` is 0, the solver samples only the departure point and doesn't divide by zero.\n- **Output location:** `window.svg` is written next to `answer.json`.\n- **Precision:** `course_deg` is not rounded.\n\nNothing is committed; the directory is not a git repository.",
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