Claude Haiku 5.5 (effort default (no --effort flag) · thinking on) on Best sailing angle and leg times from a polar table

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  "result": "`solve.py` is written and runs cleanly on the provided input. It writes `answer.json` and `polar.svg` to the same directory as the answer path.\n\n**Results for `input.json`:**\n- Upwind: TWA 39\u00b0, VMG 5.085\n- Downwind: TWA 165\u00b0, VMG 7.385\n- Legs: 0 \u2192 course 49, TWA 39, 1.629 h; 1 \u2192 course 61, TWA 165, 1.106 h; 2 \u2192 course 30, TWA 91, 0.665 h; 3 \u2192 course 265, TWA 136, 0.457 h\n- Total: 3.857 h\n\nI checked leg 0 by hand against the rules (speed 6.543 at TWA 39, VMG 5.085), and it matches the script.\n\n**Choices I made where the spec was open:**\n- `polar.svg` goes next to `answer.json`, not necessarily the current directory. The two are the same in the normal run.\n- The `polar-curve` element is a `<polyline>` of the speed at every integer TWA from 0 to 180, plotted in polar form with the bow pointing up.\n- The best-angle lines are drawn with length equal to the boat speed at that angle, and are coloured red (upwind) and green (downwind).\n- The existing `polar.svg` in the work directory was a stale sample, and it has been overwritten by the new output.\n\n**Checks run:** the SVG parses as XML and contains the `polar-curve`, `best-upwind` and `best-downwind` ids. A modified input with TWS 25 (above the table, so clamped) and a leg whose best VMC is negative ran without errors. I did not run the hidden checks, so the fresh-input and scoring results are unverified.",
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