Claude Haiku 5.5 (effort default (no --effort flag) · thinking on) on Charge residents' parking permits by emission band, part year, household order and blue-badge exemption

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  "result": "I wrote `out/permits.json` with 9 permits charged (RP-20 was refused and excluded). The total is \u00a3229.45.\n\n| Household | Permits | Charge |\n|---|---|---|\n| 2 ELM ROW | RP-26, RP-28, RP-23 | \u00a3101.78 |\n| 27 DALE AVE | RP-11 | \u00a30.00 (blue badge, first permit) |\n| 60 COBDEN RD | RP-9, RP-38, RP-18 | \u00a3116.16 (RP-9 free as first permit) |\n| 66 BELL ST | RP-17 | \u00a311.51 |\n| 27 FIR CLOSE | RP-15 (electric) | \u00a30.00 |\n\nChoices I made where the inputs left room:\n\n- **Surcharge on later permits:** I applied the 100% premium to each permit after the first, not compounding it. So the second and third permits in a household both cost double their base, not double and then triple. If the office meant compounding, the ELM ROW and COBDEN RD figures would change.\n- **Office note conflicts:** The note says a car exactly on a limit moves up a band, and that all blue-badge permits are free. The rules say the opposite on both points, so I followed the rules. Only the first non-electric permit per blue-badge household is free.\n- **Tie-break:** Permits with the same start date were ordered by numeric permit number, so RP-9 comes before RP-38.\n- **Day count:** Days run from start date to the scheme year end, both included, so 2026-11-04 gives 148 days.\n\nThe calculation script is in `/tmp/permit-calc/calc.py`, outside the inputs. I checked its results by hand against the rules, and they agree.",
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