feat(F-191): completed feature

work/artifacts/F-191/implementer.md

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+# F-191 — Implementer Evidence
+
+## Feature
+POS terminal and daily cash close reconciliation.
+
+## Changes
+
+### 1. `src/modules/pos/application/receive-rest-payment.ts`
+
+Relaxed the terminal/session mismatch check (lines 64-77 new):
+- Original check required `order.cash_session_id === input.cashSessionId` unconditionally.
+- New logic (F-191): if the original session is OPEN, still requires exact match. If the original session is CLOSED, allows payment from any OPEN session on the same terminal.
+- Preserves security: orders on OPEN sessions must use that session (no cross-session payment).
+
+### 2. `src/modules/pos/api/pos.routes.ts`
+
+Added `GET /pos/sessions/:id` route (after close route, line ~564):
+- Returns full session details plus `salesCount`, `salesTotalCents`, `pendingCount`.
+- Works for both OPEN and CLOSED sessions.
+- POS cashier can see session summary including variance (if closed).
+
+Enhanced `GET /pos/sessions` admin route with new filters:
+- `terminalId` — filter by terminal
+- `dateFrom`, `dateTo` — filter by date range (inclusive)
+- `limit` increased to max 100
+
+### Existing code (no changes needed)
+- `CloseCashSessionUseCase` — already exists, already stores `varianceCents`, `closedAt`
+- `PgCashSessionRepository.close()` — already stores `difference_cents`
+- `POST /pos/sessions/:id/close` — already exists
+- `GET /pos/sessions` (admin) — already exists, enhanced with filters
+- `expected_cash_cents` maintenance — already atomic via sale/rest-payment/return
+
+## Verification
+
+| Check | Result |
+|-------|--------|
+| `npm test` | 269 passed, 96 skipped |
+| `npx tsc --noEmit` | 0 errors |
+| `./scripts/verify.sh` | OK |