feat(bank): chequera register module (plan step 7)

Adds the office's own bank-register browser over the migrated SCOTHIA
data (22,354 bank_transactions), the last self-contained feature module.

API (apps/api/src/bank):
- GET /bank        register browser: search over concepto/reference/notes/
                   amountInWords; direction (income|expense|void), cleared and
                   date-range filters; 5 sorts; income/expense/net totals for
                   the whole filtered set, not just the page
- GET /bank/stats  headline income/expense/net + counts, date span, pending
- GET /bank/facets year list for the period filter
- GET /bank/summary  year and month rollups with a running net-movement figure

Web (/banco): "Movimientos" register + "Resumen por periodo" with year->month
drill-down; added to the AppShell nav as "Chequera".

Deliberately kept OUT of /estado-cuenta: this is the office's own money, not
customer balances, and the two are never summed or shown together.

No category/ramo dimension, and the deferred concept->ramo classifier is
dropped as won't-build: concepto is a payee name (0 of 22,354 match a
category) and TABLA RAMODOS is an expense chart of accounts + owner names,
not the insurance/servicios/fideicomiso split it was assumed to be, so a
classifier would invent data. Single currency (MXN); the "acumulado" is net
movement since the register opened (no opening balance in the source), not a
bank balance. Verified end-to-end in the browser; totals reconcile.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/web/src/lib/api.ts

@@ -6,6 +6,13 @@ import type {
   BalanceFilter,
   BalanceListResponse,
   BalanceSort,
+  BankCleared,
+  BankDirection,
+  BankFacets,
+  BankListResponse,
+  BankSort,
+  BankStats,
+  BankSummary,
   BillingFacets,
   BillingStats,
   BusinessLine,
@@ -294,3 +301,43 @@ export function getBillingFacets(): Promise<BillingFacets> {
 export function getStatement(customerId: string): Promise<Statement> {
   return apiFetch<Statement>(`/billing/customers/${customerId}`);
 }
+
+/* ------------------------------------------------- Bank register (chequera) */
+
+export interface BankQuery {
+  query?: string;
+  page?: number;
+  pageSize?: number;
+  direction?: BankDirection;
+  cleared?: BankCleared;
+  /** `YYYY-MM-DD`, inclusive on both ends. */
+  from?: string;
+  to?: string;
+  sort?: BankSort;
+}
+
+export function listBankMovements(q: BankQuery): Promise<BankListResponse> {
+  const params = new URLSearchParams();
+  if (q.query) params.set("query", q.query);
+  if (q.page) params.set("page", String(q.page));
+  if (q.pageSize) params.set("pageSize", String(q.pageSize));
+  if (q.direction) params.set("direction", q.direction);
+  if (q.cleared) params.set("cleared", q.cleared);
+  if (q.from) params.set("from", q.from);
+  if (q.to) params.set("to", q.to);
+  if (q.sort) params.set("sort", q.sort);
+  const qs = params.toString();
+  return apiFetch<BankListResponse>(`/bank${qs ? `?${qs}` : ""}`);
+}
+
+export function getBankStats(): Promise<BankStats> {
+  return apiFetch<BankStats>("/bank/stats");
+}
+
+export function getBankFacets(): Promise<BankFacets> {
+  return apiFetch<BankFacets>("/bank/facets");
+}
+
+export function getBankSummary(year?: number): Promise<BankSummary> {
+  return apiFetch<BankSummary>(`/bank/summary${year ? `?year=${year}` : ""}`);
+}