[Param-Harrison]

Summary

exportCsv (shared by the CSV route and splitbill export) now prints the amount column as a 2-decimal string via formatCents instead of raw integer cents, so 1000 reads 10.00.

Closes #186

Plan

Plan comment (rev 1):

• AC-1: amounts render via formatCents (4500 -> 45.00), verified by bun test tests/csv.test.ts ("exportCsv formats the amount column as a decimal")
• AC-2: two digits kept (1005 -> 10.05, 1050 -> 10.50), verified by "exportCsv keeps two decimal places"
• AC-3: header, row count and other columns unchanged, verified by "exportCsv keeps header and row count" plus the existing tests/routes.test.ts and tests/cli.test.ts export tests
• AC-4: full gate passes, verified by make check

Left out (non-goals): no change to src/money/**, the CSV header/column order/csvEscape, the DB schema or SQL, src/routes/**, src/cli.ts, or any protected path.

Files changed: src/csv.ts (use formatCents, drop the stale "SEEDED DEFECT" comment) and the new tests/csv.test.ts.

Gate evidence

FACTORY_GATES: status=GREEN passed=3 failed=0 skipped=1 failed_gates=audit

(The audit gate is optional and was skipped, not failed.)

Verify verdict

Verdict: pass, all of AC-1 to AC-4. See the verdict comment on the issue #186 thread. Test that bites: with src/csv.ts reverted, all 3 new tests fail on the amount value (e.g. "1005" received where "10.05" was expected); with the fix they pass (17 pass, 0 fail across the csv, routes and cli tests).

Reviewer notes, not addressed here:

• could: no test cases for 0, 5 cents, negative or large amounts.
• Separate issue, already on main: csvEscape does not neutralise a leading =, +, - or @, so the export is open to spreadsheet formula injection. NG-2 forbids changing it here, so it needs its own issue.

Risk and rollback

Low: a change confined to one non-protected module with no schema or API-shape change. Rollback: revert this PR; nothing stored changes, since only how the amount is rendered in the export differs.

Factory run

Stage	Agent	Duration	Tool calls	Cost	Outcome
triage	claude	24s	6	$0.09	ok
plan	claude	45s	6	$0.24	ok
build	claude	1m 14s	16	$0.35	ok
verify	claude	47s	10	$0.32	pass
pr	claude	14s	3	$0.09	ok

Proof: the new test fails without the change.

5 stage runs, 3m 23s, $1.08.

Went well

• triage, plan, build, verify, pr passed on the first attempt
• verify approved on the first round

Needed help

• nothing

[Param-Harrison]

/factory revise add a test for an amount under one dollar, like 5 cents