Three copies of the imperial/metric conversion logic existed:
- src/components/yachts/yacht-dimensions.ts (canonical, used by
read-side `formatYachtDimensionsBothUnits`)
- src/components/yachts/yacht-form.tsx (create/edit sheet —
local `ftToM`/`mToFt` with 2dp precision)
- src/components/yachts/yacht-tabs.tsx (detail-tab inline
edit — local arithmetic with 2dp precision)
The 2dp rounding lost precision on the round-trip: `1 ft → 0.30 m →
0.98 ft`. Whenever a rep entered ft, then later touched the m field,
the ft column silently shifted off. Same for sub-meter draft values.
Consolidate both surfaces onto `feetToMeters` / `metersToFeet` from
yacht-dimensions.ts and bump display precision to 4dp. After
trimZero strips trailing zeros the rendered string stays clean
("3.81" not "3.8100") but the round-trip now lands back on the
original value:
1 ft → 0.3048 m → 1 ft
12.5 ft → 3.81 m → 12.5 ft
50 ft → 15.24 m → 50 ft
0.5 m → 1.6404 ft → 0.5 m
New unit test (`tests/unit/yacht-dimensions.test.ts`) covers the
helpers + the form-shape round-trip, including the canonical
12.5 ft ↔ 3.81 m case from the UAT bug report.
29/29 new tests pass; full vitest 1448/1448.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Matt
8e9efe5ae8