[rudycelekli]

Why

Unit-bearing small quantities were rounded to two decimal places: 0.035 亿元 displayed as 0.04 亿元, and 0.0003 亿元 displayed as zero.

Changes

Keep two fractional digits for compact notation. Use at most 15 significant digits for ordinary unit-bearing numbers, as requested in review. This preserves small quantities while suppressing floating-point arithmetic noise (0.1 + 0.2 displays as 0.3 kg). Add the arithmetic regression to the existing formatter tests.

Validation

• Current head: eight production-formatter oracle cases pass, plus 15 independently checked production-source assertions. The original head reproduces the arithmetic roundoff.
• git diff --check passes.
• Vitest, type-check, build and browser checks were not rerun locally for this revision; dependencies are unavailable in this checkout. Earlier-head CI results do not validate this revision. Current-head CI remains required.
• Prepared and independently reviewed with AI assistance.

Before review

• Every commit is signed off (git commit -s)
• For changes under web/: pnpm test passes; type-check/build pass on the current head

[WaylandYang]

Thanks, the bug is real. Please use maximumSignificantDigits: 15 instead of 20 fraction digits: rules can compute values with arithmetic, and with 20 fraction digits 0.1+0.2 renders as 0.30000000000000004. Fifteen significant digits still shows 0.035 and 0.0003.

[WaylandYang]

Thanks, 15 significant digits shows 0.035 亿元 and 0.3 kg both right. Approving and merging.