New services/userDataService.js eraseUserData() permanently wipes a user's
financial + imported data in one transaction (child → parent order for FK
safety): bills (+ cascading payments/monthly_bill_state/bill_history_ranges),
transactions/accounts/data_sources, categories/groups, templates, snowball,
spending rules/budgets, merchant rules, imports, and per-user hint tables. It
PRESERVES the account, sessions, 2FA/WebAuthn, login history and preferences —
this resets your data, not your account — then re-seeds default categories and
writes an audit row to import_history.
- POST /api/user/erase-data — rate-limited (demoDataLimiter), requires a
type-to-confirm token ("ERASE"), structured errors.
- UI: EraseDataSection danger-zone card (Export & backups pane) — red-accented,
"download a backup first" nudge, type-to-confirm AlertDialog, toasts; on
success DataPage reloads all state.
Tests: tests/eraseUserData.test.js — wipes user A only, preserves user B +
account + session, re-seeds categories, audited. Server 139 pass.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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