fix(portfolio): tolerate consolidation WAC residue

2026-09-13 18:36:00 +09:00
parent 4520fbbfbd
commit 2b470c735f
14 changed files with 146 additions and 34 deletions
@@ -438,6 +438,7 @@
 - Auth: same owner-scoped user/session token policy as manual write.
 - Query: `limit` 1..200, default 50.
 - `GET /v1/portfolios/{id}/ledger` returns corporate-action events as a distinct `CorporateActionLedgerHistoryItem` with event ID/type, effective date, before/after quantity and WAC, total cost basis, cash/profit buffer, evidence, actor, and recorded time. These events are never represented as BUY/SELL trades.
+- For stock consolidations, WAC fields are rounded half-up to the persisted 8-decimal scale. `total_cost_basis` is preserved independently as the authoritative pre-action acquisition cost; a sub-cent residue when `average_price_after * quantity_after` is recomputed does not make an integral-share consolidation invalid.
 - `GET /v1/portfolios/{id}/trades` remains restricted to BUY/SELL history.
 - `portfolio corporate-action` is the operator command; it requires an idempotency key and confirmation unless `--force` is supplied.