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Audit finding 9b: store-credit refunds and credit memos posted nothing to the GL on issue (only a CreditMemo + Customer.CreditBalance), so outstanding store credit was invisible on the balance sheet and the contra-revenue was recognized only on apply. Introduces a 2350 "Customer Credits" liability so the credit is on the books from issue to apply. Model (chosen): lifecycle-equivalent to before, plus the liability is tracked. - Issue (credit memos, goodwill, and store-credit refunds): DR Sales Discounts (4950) / CR Customer Credits (2350). - Apply: DR Customer Credits / CR AR (was DR Sales Discounts / CR AR). - Void unapplied remainder: DR Customer Credits / CR Sales Discounts. Posting updated in all 8 sites: CreditMemosController Create/Apply/Void and InvoicesController IssueCreditMemo/IssueRefund(store credit)/ApplyCredit/ VoidCreditMemo/CancelRefund. New 2350 account (seed + self-heal). Reporting moved in lockstep so the books still balance: the 4950 contra-revenue shifts from applied -> issued (active memos in full + applied portion of voided), the 2350 liability = unapplied balance on active memos, AR still credited by applications. Updated in FinancialReportService (balance sheet retained earnings, trial balance, P&L) and LedgerService (per-account + prior-balance 2350 section). Verified the balance-sheet identity for active and voided memos by hand; new ledger test covers the 2350 lifecycle. Build clean; 284 unit tests pass. Note: pre-existing quirks left untouched (out of 9b scope) — account 2300 is seeded as "Payroll Liabilities" but resolved as Customer Deposits in code, and LedgerService doesn't recompute 4950 so RecalculateBalances understates it; both predate this change. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>