519edce373
Validation: shared NaN-guarded Zod coercion helpers in schemas/common.ts replace the raw number|string transform idiom across every schema (the root-cause NaN bug class); emailOrEmpty + lenient isoDateString/timeString. Security: roles privilege-escalation closed; refresh-token family revocation on reuse; TOTP uses config params; read endpoints permission-guarded; received-invoices gross VAT on all paths; orders-pdf custom-items authz. Concurrency: $queryRaw SELECT...FOR UPDATE locks in ascending-id order (warehouse confirm/cancel, attendance lockUserRow); uniqueness checks moved into create transactions (TOCTOU -> 409); deterministic id tiebreak on second-precision timestamp ordering (plan resolveCell/resolveGrid, warehouse FIFO). Frontend: Rules-of-Hooks fixed across ~14 pages + PlanCellModal; UTC-date persisted fields; dashboard invalidation gaps; stale-closure confirm bugs. Tooling/tests: ESLint flat config (react-hooks/rules-of-hooks = error) + Prettier; tsconfig.test.json so tsc -b type-checks the tests; removed 3 dead deps; npm audit fix (8 -> 3). Suite 195 -> 247 (happy-path auth, FIFO oldest-first, flakiness fixes), isolated on app_test via .env.test with a hard-throw setup guard. Gates: tsc 0 | build 0 | vitest 247/247 | eslint 0 errors. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>