A sync reads the balance first and each account's positions and trades
after it, so a fill landing in between shows in the trades but not yet in
the balance, and for that one pass the books are off by the whole fill.
reconcileFunds booked that as a fund event, and the next pass booked the
reversal. Same-day rows merge, so the two netted to the commission drift
of the day and left a tiny row:
- 2026-10-05, Express 43788281 and 23275136: +3,001.16 "deposit" (balance
-2.16 against the -3,001.16 stop-out already in the trades), then
-3,002.16, merged to -1.00.
- 2026-10-08, combine 99745612: +2,474.01, then -2,492.01, left -18.00.
- 2026-09-24, five 150K combines on another instance: +3,049.45, then
-3,059.45, left -10.00 each.
A negative row is a withdrawal. It started a new cycle, dropped its day
out of the cycle (the -3,003.32 on 10-05) and counted toward the stage:
both Express accounts traded drain days from 10-06 on a $1 "payout".
- fundReconcileStep (trading-logic): an unexplained balance is booked
only when a check at least 30s after the first sighting still sees it,
to within $5. A transient is gone by the next pass and books nothing.
- A transient that outlasts that, and so books, is taken back whole once
its reversal nets the day under FUND_EVENT_MIN. The day's first booking
saves what it replaced (fund_day_before), and dropFundTransaction
deletes the row and puts last_fund_date and ended_cycle_start back in
one transaction. A row reconcileFunds didn't book (an import) merges as
before.
- funds_reconciled is set only once a check settles, so a first-check
lump that waits on a second pass is still booked as the first check.
Existing tiny rows are left as they are; cleaning them up is a separate,
one-time step.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
