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fix(main): gate exact-balance discount auto-settlement on kitchen delivery status - #1211
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WalkthroughBill and order discount handlers now revalidate financial and order state inside transactions. Discounts that exactly match collected payments can settle bills and complete eligible orders. Payment endpoints coordinate idempotent replays before kitchen PIN checks. New integration tests cover these flows and their rejection cases. ChangesFinancial safeguards
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Bug fix · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant BillDiscountRoute
participant completeExactBalanceSettlement
participant Database
BillDiscountRoute->>Database: Re-read bill, order, and payment state
BillDiscountRoute->>completeExactBalanceSettlement: Settle bill when collected payments equal discounted total
completeExactBalanceSettlement->>Database: Mark bill paid and check sibling bills
completeExactBalanceSettlement->>Database: Complete order and release table when no sibling bill is unpaid
sequenceDiagram
participant PaymentClient
participant PaymentEndpoint
participant PersistedIdempotencyRecords
participant InFlightAttempts
participant KitchenPINVerifier
PaymentClient->>PaymentEndpoint: Submit payment with idempotency key
PaymentEndpoint->>PersistedIdempotencyRecords: Look up matching committed request
PaymentEndpoint->>InFlightAttempts: Join or claim matching concurrent attempt
PaymentEndpoint->>KitchenPINVerifier: Verify supplied PIN when items remain undelivered
PaymentEndpoint-->>PaymentClient: Return saved or completed payment result
Merge Risk: 🟡 Moderate · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 20 functions across 5 files. (3 skipped: 3… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
| Description check | |
The description provides detailed intent, behavior changes, risk information, and test evidence, but it does not follow the required template and omits several required sections, including Related wor… | Rewrite the description using the repository template. Add or explicitly mark as not applicable: Related work, Summary, Scope, Verification with exact commands and results, Compatibility & data safety, Screenshots, Cross-cutting surfaces, D… |
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Check name Status Explanation Linked Issues check Issue #1176is closed. It supplies historical context only. No active directly linked issue remains, so this pull request has no linked-issue coding requirements.Out of Scope Changes check The changes match the stated pull request objectives. Exact-balance settlement, idempotent settled-bill retries, safety guards, regression tests, and documentation are all described objectives or supp… Title check The title clearly identifies the primary change: gating exact-balance discount auto-settlement on kitchen delivery status. Full details: Out of Scope Changes check
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Explanation
The changes match the stated pull request objectives. Exact-balance settlement, idempotent settled-bill retries, safety guards, regression tests, and documentation are all described objectives or supporting work. The evidence does not show an unrelated change.
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Full details: Docstring Coverage
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Explanation
Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 20 functions across 5 files. (3 skipped: 3 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
Full details: Description check
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Explanation
The description provides detailed intent, behavior changes, risk information, and test evidence, but it does not follow the required template and omits several required sections, including Related work, Scope, Compatibility & data safety, Cross-cutting surfaces, Developer documentation, and the Contributor checklist.
Resolution
Rewrite the description using the repository template. Add or explicitly mark as not applicable: Related work, Summary, Scope, Verification with exact commands and results, Compatibility & data safety, Screenshots, Cross-cutting surfaces, Developer documentation, and the Contributor checklist. Document the developer documentation updates included in this PR and confirm database, migration, user-visible, and offline/network impacts.
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Actionable comments posted: 3
- 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @docs/reference/api.md:
- Around line 299-300: Update both discount endpoint rows and the applyDiscount
documentation to avoid claiming that zero balance always completes the order and
frees the table; state that the bill settles and link to the canonical
Settlement and completion section for order and table behavior.
Review comments at @main/routes/bills.ts:
- Around line 4305-4306: Gate exact-balance settlement on kitchen-delivery
status: update isNowPaid in the bill handler and isBillNowPaid in both
order-discount callers to require checkKitchenDeliveryStatus(...).allowed,
leaving blocked zero-balance bills partial. In applyPaymentBatch, run the
kitchen-status and PIN gate before completing an order in the zero-balance retry
path, so blocked orders remain incomplete until a later payment call passes the
gate.
Review comments at @tests/financial-safety-remediation.test.ts:
- Around line 347-470: Update the concurrent payment assertions in the Replay 4,
5, and 6 test cases to be independent of HTTP arrival order: valid-PIN requests
must return 200, while invalid-PIN requests may return 403 or 200, and each bill
must still record exactly one payment. To preserve the
owner-rejects/waiter-recovers scenario, start the invalid-PIN request first and
delay launching the valid-PIN request until the attempt is registered.
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📒 Files selected for processing: 8
docs/architecture/order-lifecycle.mddocs/reference/api.mdmain/routes/bills.tsmain/routes/orders.tspackage.jsontests/financial-safety-remediation.test.tstests/issue-exact-balance-settlement.test.tstests/issue-terminal-state-guards.test.ts
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1 participant
Intent
Gate exact-balance discount auto-settlement on kitchen delivery status
What Changed
payment_exceeds_balance, while allowing zero-balance payment completion on already-paid bills to succeed idempotently.Risk Assessment
✅ Low: The change is well-bounded, cleanly enforces the kitchen delivery status gate on exact-balance settlement across all discount and payment routes, rejects positive tenders on zero-balance bills, preserves audit logging, and includes comprehensive regression tests.
Testing
Drove 8 live end-to-end product scenarios over HTTP sockets against the real running FloCafe server along with targeted regression test suites, confirming that exact-balance discount auto-settlement is properly gated on kitchen delivery status across bill, order, item, and payment endpoints with zero failures.
Evidence: Live Product Validation Report
# Live Product Validation: Exact-Balance Settlement Gated on Kitchen Delivery Status All 8 derived scenarios were driven against the real running FloCafe standalone server over live HTTP network connections. - Kitchen delivery gate correctly blocks auto-settlement when kitchen items are pending/preparing unless overridden by a valid manager PIN. - Zero-balance settlement retry on gated bills is rejected with HTTP 409 kitchen_undelivered. - Positive payment tender on zero-balance bills is rejected with HTTP 400 payment_exceeds_balance. - Exact-balance discounts auto-settle cleanly when items are served or when manager override PIN is provided. - Sibling bill topology and below_collected_funds guards remain fully enforced.Evidence: Live Product Validation JSON Results
Source: Live Product Validation JSON Results (local file:
~/.no-mistakes/evidence/01M581PZR6TZYQQ8V3MHTQQ67D/live-product-validation.json)Pipeline
Updates from git push no-mistakes
✅ **intent** - passed
✅ No issues found.
✅ **Rebase** - passed
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✅ **Review** - passed
✅ No issues found.
✅ **Test** - passed
✅ No issues found.
node tests/run-electron-node-test.cjs tests/issue-exact-balance-settlement.test.ts(125/125 assertions passed)node tests/run-electron-node-test.cjs tests/issue-zero-balance-settlement.test.ts(112/112 assertions passed)node tests/run-electron-node-test.cjs tests/financial-safety-remediation.test.ts(69/69 assertions passed)Live product driver executing 8 end-to-end scenarios over HTTP network sockets against real running FloCafe backend server on ports 4301-4303✅ **Document** - passed
✅ No issues found.
✅ **Lint** - passed
✅ No issues found.
✅ **Push** - passed
✅ No issues found.