refactor(web): filas de formulario con varios controles combinables

El mockup muestra que una fila es etiqueta + uno o varios controles en la
misma línea (Cliente = input + "...", Canal / Zona = dos mitades, Serie +
Número = 72 px + resto, select + número + botón) y que la cabecera tiene a
lo sumo 2 columnas. Los campos de un solo control no lo permitían.

- Controles sin etiqueta combinables dentro de sbo-field: sbo-input,
  sbo-textarea, sbo-number, sbo-date, sbo-select y el botón .sbo-btn;
  ocupan el espacio sobrante o un width fijo.
- El primer control de la fila toma el id de la etiqueta (claimId); los
  demás se nombran con ariaLabel. El error de la fila marca todos sus
  controles (aria-invalid / aria-describedby).
- Los campos con etiqueta (sbo-text-field, sbo-number-field, ...,
  sbo-lookup-field) pasan a ser atajos de un solo control con la misma API.
- CSS global: .sbo-group y .sbo-btn reemplazan a .sbo-pick/.sbo-pair.
- CLAUDE.md apunta al mockup renombrado (tools/oferta_venta.html).
- Verificado en Chrome contra SAP real, con una cabecera que reproduce las
  filas compuestas del mockup.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

apps/web/src/app/shared/form/control-base.ts

@@ -0,0 +1,35 @@
+import { Directive, ElementRef, booleanAttribute, computed, inject, input } from '@angular/core';
+import { SboField } from './sbo-field';
+
+let nextId = 0;
+
+/**
+ * Base de los controles sin etiqueta que se combinan dentro de un `sbo-field`.
+ * Por defecto ocupan el espacio sobrante de la fila; con `width` toman un ancho fijo.
+ */
+@Directive({
+  host: {
+    '[style.flex]': "width() ? '0 0 ' + width() : '1 1 0'",
+    '[style.min-width]': "'0'",
+  },
+})
+export abstract class ControlBase {
+  protected readonly field = inject(SboField, { optional: true });
+  private readonly host = inject<ElementRef<HTMLElement>>(ElementRef);
+
+  readonly readOnly = input(false, { alias: 'readonly', transform: booleanAttribute });
+  readonly disabled = input(false, { transform: booleanAttribute });
+  readonly required = input(false, { transform: booleanAttribute });
+  /** Ancho fijo (ej. `72px`) para controles estrechos como la serie; sin él, reparte el espacio. */
+  readonly width = input<string>();
+  /** Obligatorio en controles que no son el primero de la fila (el primero usa la etiqueta). */
+  readonly ariaLabel = input<string>();
+
+  protected readonly id = this.field?.claimId() ?? `sbo-c-${++nextId}`;
+  protected readonly invalid = computed(() => !!this.field?.error());
+  protected readonly describedBy = computed(() => (this.invalid() ? (this.field?.errorId ?? null) : null));
+
+  focus(): void {
+    this.host.nativeElement.querySelector<HTMLElement>('input,select,textarea')?.focus();
+  }
+}

apps/web/src/app/shared/form/controls.ts

@@ -0,0 +1,191 @@
+import { ChangeDetectionStrategy, Component, computed, input, model, signal } from '@angular/core';
+import { formatNumber, parseDecimal } from '../../core/format';
+import { ControlBase } from './control-base';
+
+@Component({
+  selector: 'sbo-input',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  template: `
+    <input
+      class="sbo-in"
+      type="text"
+      autocomplete="off"
+      [id]="id"
+      [value]="value()"
+      [readOnly]="readOnly()"
+      [disabled]="disabled()"
+      [required]="required()"
+      [attr.maxlength]="maxlength()"
+      [placeholder]="placeholder()"
+      [attr.aria-label]="ariaLabel() ?? null"
+      [attr.aria-invalid]="invalid() ? 'true' : null"
+      [attr.aria-describedby]="describedBy()"
+      (input)="value.set($any($event.target).value)"
+    />
+  `,
+  styles: ':host { display: block; }',
+})
+export class TextInput extends ControlBase {
+  readonly value = model('');
+  readonly maxlength = input<number>();
+  readonly placeholder = input('');
+}
+
+@Component({
+  selector: 'sbo-textarea',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  template: `
+    <textarea
+      class="sbo-ta"
+      [id]="id"
+      [value]="value()"
+      [readOnly]="readOnly()"
+      [disabled]="disabled()"
+      [required]="required()"
+      [attr.maxlength]="maxlength()"
+      [placeholder]="placeholder()"
+      [rows]="rows()"
+      [attr.aria-label]="ariaLabel() ?? null"
+      [attr.aria-invalid]="invalid() ? 'true' : null"
+      [attr.aria-describedby]="describedBy()"
+      (input)="value.set($any($event.target).value)"
+    ></textarea>
+  `,
+  styles: ':host { display: block; }',
+})
+export class TextareaInput extends ControlBase {
+  readonly value = model('');
+  readonly maxlength = input<number>();
+  readonly placeholder = input('');
+  readonly rows = input(3);
+}
+
+/**
+ * Número o importe. Fuera de foco se muestra formateado (`1,234.50`); al editar se
+ * escribe en texto libre y se interpreta al salir (acepta `12,5` y `1,234.50`).
+ */
+@Component({
+  selector: 'sbo-number',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  template: `
+    <input
+      class="sbo-in num"
+      type="text"
+      inputmode="decimal"
+      autocomplete="off"
+      [id]="id"
+      [value]="display()"
+      [readOnly]="readOnly()"
+      [disabled]="disabled()"
+      [required]="required()"
+      [attr.aria-label]="ariaLabel() ?? null"
+      [attr.aria-invalid]="invalid() ? 'true' : null"
+      [attr.aria-describedby]="describedBy()"
+      (focus)="startEditing($event)"
+      (input)="draft.set($any($event.target).value)"
+      (blur)="finishEditing()"
+    />
+  `,
+  styles: ':host { display: block; }',
+})
+export class NumberInput extends ControlBase {
+  readonly value = model<number | null>(null);
+  /** Decimales fijos al mostrar y redondear (importes: 2). Sin él: hasta 3, sin ceros sobrantes. */
+  readonly decimals = input<number>();
+
+  protected readonly editing = signal(false);
+  protected readonly draft = signal('');
+  protected readonly display = computed(() =>
+    this.editing() ? this.draft() : formatNumber(this.value(), this.decimals()),
+  );
+
+  protected startEditing(event: FocusEvent): void {
+    if (this.readOnly()) return;
+    const v = this.value();
+    this.draft.set(v === null ? '' : String(v));
+    this.editing.set(true);
+    // se selecciona el contenido una vez que el valor editable reemplazó al formateado
+    const input = event.target as HTMLInputElement;
+    queueMicrotask(() => input.select());
+  }
+
+  protected finishEditing(): void {
+    if (!this.editing()) return;
+    this.editing.set(false);
+    const text = this.draft().trim();
+    if (text === '') {
+      this.value.set(null);
+      return;
+    }
+    const parsed = parseDecimal(text);
+    if (parsed === null) return; // no es un número: se conserva el valor anterior
+    const d = this.decimals();
+    this.value.set(d === undefined ? parsed : Math.round((parsed + Number.EPSILON) * 10 ** d) / 10 ** d);
+  }
+}
+
+/** Fecha como texto ISO `yyyy-MM-dd` (el formato del Service Layer). Selector nativo: sin librerías. */
+@Component({
+  selector: 'sbo-date',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  template: `
+    <input
+      class="sbo-in"
+      type="date"
+      [id]="id"
+      [value]="value()"
+      [readOnly]="readOnly()"
+      [disabled]="disabled()"
+      [required]="required()"
+      [attr.aria-label]="ariaLabel() ?? null"
+      [attr.aria-invalid]="invalid() ? 'true' : null"
+      [attr.aria-describedby]="describedBy()"
+      (input)="value.set($any($event.target).value)"
+    />
+  `,
+  styles: ':host { display: block; }',
+})
+export class DateInput extends ControlBase {
+  readonly value = model('');
+}
+
+export interface SelectOption {
+  value: string | number;
+  label: string;
+}
+
+@Component({
+  selector: 'sbo-select',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  template: `
+    <select
+      class="sbo-sel"
+      [id]="id"
+      [disabled]="disabled() || readOnly()"
+      [required]="required()"
+      [attr.aria-label]="ariaLabel() ?? null"
+      [attr.aria-invalid]="invalid() ? 'true' : null"
+      [attr.aria-describedby]="describedBy()"
+      (change)="choose($any($event.target).value)"
+    >
+      @if (placeholder() !== undefined) {
+        <option value="" [selected]="value() === null">{{ placeholder() }}</option>
+      }
+      @for (o of options(); track o.value) {
+        <option [value]="o.value" [selected]="o.value === value()">{{ o.label }}</option>
+      }
+    </select>
+  `,
+  styles: ':host { display: block; }',
+})
+export class SelectInput extends ControlBase {
+  readonly options = input.required<readonly SelectOption[]>();
+  readonly value = model<string | number | null>(null);
+  /** Opción vacía inicial (ej. "— Seleccione —"); sin él, no se ofrece. */
+  readonly placeholder = input<string>();
+
+  protected choose(raw: string): void {
+    const option = this.options().find((o) => String(o.value) === raw);
+    this.value.set(option ? option.value : null);
+  }
+}

apps/web/src/app/shared/form/date-field.ts

@@ -1,29 +0,0 @@
-import { ChangeDetectionStrategy, Component, model } from '@angular/core';
-import { FieldBase } from './field-base';
-import { SboField } from './sbo-field';
-
-/** Fecha como texto ISO `yyyy-MM-dd` (el formato que usa el Service Layer). Selector nativo: sin librerías. */
-@Component({
-  selector: 'sbo-date-field',
-  changeDetection: ChangeDetectionStrategy.OnPush,
-  imports: [SboField],
-  template: `
-    <sbo-field [label]="label()" [for]="id" [required]="required()" [error]="error()">
-      <input
-        class="sbo-in"
-        type="date"
-        [id]="id"
-        [value]="value()"
-        [readOnly]="readOnly()"
-        [disabled]="disabled()"
-        [required]="required()"
-        [attr.aria-invalid]="error() ? 'true' : null"
-        (input)="value.set($any($event.target).value)"
-      />
-    </sbo-field>
-  `,
-  styles: ':host { display: block; }',
-})
-export class DateField extends FieldBase {
-  readonly value = model('');
-}

apps/web/src/app/shared/form/field-base.ts

@@ -1,8 +1,6 @@
 import { Directive, booleanAttribute, input } from '@angular/core';
 
-let nextId = 0;
-
-/** Entradas comunes de todos los campos de formulario. */
+/** Entradas comunes de los campos con etiqueta (un solo control por fila). */
 @Directive()
 export abstract class FieldBase {
   readonly label = input.required<string>();
@@ -10,6 +8,4 @@ export abstract class FieldBase {
   readonly readOnly = input(false, { alias: 'readonly', transform: booleanAttribute });
   readonly disabled = input(false, { transform: booleanAttribute });
   readonly error = input<string>();
-
-  protected readonly id = `sbo-f-${++nextId}`;
 }

apps/web/src/app/shared/form/fields.spec.ts

@@ -3,13 +3,11 @@ import { HttpTestingController, provideHttpClientTesting } from '@angular/common
 import { type ComponentFixture, TestBed } from '@angular/core/testing';
 import { beforeEach, describe, expect, it, vi } from 'vitest';
 import type { VhLookup } from '../value-help/value-help.types';
-import { DateField } from './date-field';
+import { Component, signal } from '@angular/core';
+import { DateInput, NumberInput, SelectInput, TextInput } from './controls';
+import { DateField, NumberField, SelectField, TextField, TextareaField } from './fields';
 import { LookupField } from './lookup-field';
-import { NumberField } from './number-field';
 import { SboField } from './sbo-field';
-import { SelectField } from './select-field';
-import { TextField } from './text-field';
-import { TextareaField } from './textarea-field';
 
 const tick = async <T>(fixture: ComponentFixture<T>) => {
   fixture.detectChanges();
@@ -26,14 +24,13 @@ describe('SboField', () => {
     await TestBed.configureTestingModule({ imports: [SboField] }).compileComponents();
     const fixture = TestBed.createComponent(SboField);
     fixture.componentRef.setInput('label', 'Cliente');
-    fixture.componentRef.setInput('for', 'x1');
     fixture.componentRef.setInput('required', true);
     fixture.componentRef.setInput('action', true);
     fixture.componentRef.setInput('error', 'Obligatorio');
     await tick(fixture);
     const label = fixture.nativeElement.querySelector('label') as HTMLLabelElement;
     expect(label.textContent?.trim()).toBe('Cliente');
-    expect(label.htmlFor).toBe('x1');
+    expect(label.htmlFor).toMatch(/^sbo-f-\d+$/);
     expect(label.classList.contains('req')).toBe(true);
     expect(label.classList.contains('ga')).toBe(true);
     expect(fixture.nativeElement.querySelector('.err').textContent).toContain('Obligatorio');
@@ -241,7 +238,7 @@ describe('LookupField', () => {
   let fixture: ComponentFixture<LookupField>;
   let ctrl: HttpTestingController;
   const input = () => fixture.nativeElement.querySelector('input.sbo-in') as HTMLInputElement;
-  const button = () => fixture.nativeElement.querySelector('.sbo-pick button') as HTMLButtonElement;
+  const button = () => fixture.nativeElement.querySelector('.sbo-group button') as HTMLButtonElement;
   const dialog = () => fixture.nativeElement.querySelector('.dlg') as HTMLElement | null;
 
   beforeEach(async () => {
@@ -299,7 +296,7 @@ describe('LookupField', () => {
   });
 
   it('F4 abre la lista y al cerrarla el foco vuelve al campo', async () => {
-    input().dispatchEvent(new KeyboardEvent('keydown', { key: 'F4', cancelable: true }));
+    input().dispatchEvent(new KeyboardEvent('keydown', { key: 'F4', cancelable: true, bubbles: true }));
     await tick(fixture);
     ctrl.expectOne((r) => r.url === '/api/sl/BusinessPartners').flush({ value: [], 'odata.count': '0' });
     await tick(fixture);
@@ -314,7 +311,7 @@ describe('LookupField', () => {
     fixture.componentRef.setInput('readonly', true);
     await tick(fixture);
     expect(button().disabled).toBe(true);
-    input().dispatchEvent(new KeyboardEvent('keydown', { key: 'F4' }));
+    input().dispatchEvent(new KeyboardEvent('keydown', { key: 'F4', bubbles: true }));
     await tick(fixture);
     expect(dialog()).toBeNull();
     ctrl.expectNone('/api/sl/BusinessPartners');
@@ -329,3 +326,100 @@ describe('LookupField', () => {
     expect(link).toHaveBeenCalledTimes(1);
   });
 });
+
+// Filas con varios controles, como en el mockup (Cliente = input + botón, Número = serie + número...).
+@Component({
+  imports: [SboField, TextInput, NumberInput, DateInput, SelectInput],
+  template: `
+    <sbo-field label="Número" error="Serie inválida">
+      <sbo-input width="72px" readonly ariaLabel="Serie" [value]="serie()" />
+      <sbo-input readonly ariaLabel="Número correlativo" [value]="numero()" />
+    </sbo-field>
+    <sbo-field label="Canal / Zona">
+      <sbo-input readonly ariaLabel="Canal" value="Constructora" />
+      <sbo-input readonly ariaLabel="Zona" value="Lima Sur" />
+    </sbo-field>
+    <sbo-field label="Moneda e importe">
+      <sbo-select width="90px" ariaLabel="Moneda" [options]="monedas" [(value)]="moneda" />
+      <sbo-number [decimals]="2" ariaLabel="Importe" [(value)]="importe" />
+      <button type="button" class="sbo-btn" (click)="clicks.set(clicks() + 1)">…</button>
+    </sbo-field>
+  `,
+})
+class RowsHost {
+  serie = signal('COT');
+  numero = signal('000123');
+  monedas = [
+    { value: 'PEN', label: 'S/' },
+    { value: 'USD', label: 'US$' },
+  ];
+  moneda = signal<string | number | null>('PEN');
+  importe = signal<number | null>(10);
+  clicks = signal(0);
+}
+
+describe('filas con varios controles', () => {
+  let fixture: ComponentFixture<RowsHost>;
+  const fields = () => [...fixture.nativeElement.querySelectorAll('sbo-field')] as HTMLElement[];
+  const controls = (field: HTMLElement) => [...field.querySelectorAll('input,select')] as (HTMLInputElement | HTMLSelectElement)[];
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({ imports: [RowsHost] }).compileComponents();
+    fixture = TestBed.createComponent(RowsHost);
+    await tick(fixture);
+  });
+
+  it('los controles de una fila comparten línea', () => {
+    for (const f of fields()) expect(f.querySelector('.sbo-group')).toBeTruthy();
+    expect(controls(fields()[1])).toHaveLength(2);
+    expect(controls(fields()[2])).toHaveLength(2);
+    expect(fields()[2].querySelectorAll('button')).toHaveLength(1);
+  });
+
+  it('un control con width toma ancho fijo y el resto reparte el espacio', () => {
+    const [serie, numero] = [...fields()[0].querySelectorAll('sbo-input')] as HTMLElement[];
+    expect(serie.style.flex).toBe('0 0 72px');
+    expect(numero.style.flex).toContain('1 1 0');
+  });
+
+  it('la etiqueta apunta solo al primer control; los demás se nombran con ariaLabel', () => {
+    const [serie, numero] = controls(fields()[0]);
+    expect((fields()[0].querySelector('label') as HTMLLabelElement).htmlFor).toBe(serie.id);
+    expect(serie.getAttribute('aria-label')).toBe('Serie');
+    expect(numero.getAttribute('aria-label')).toBe('Número correlativo');
+    expect(numero.id).not.toBe(serie.id);
+  });
+
+  it('el error de la fila marca todos sus controles y los describe', () => {
+    for (const c of controls(fields()[0])) {
+      expect(c.getAttribute('aria-invalid')).toBe('true');
+      expect(c.getAttribute('aria-describedby')).toBeTruthy();
+    }
+    expect(fields()[0].querySelector('.err')?.textContent).toContain('Serie inválida');
+    expect(controls(fields()[1])[0].hasAttribute('aria-invalid')).toBe(false);
+  });
+
+  it('mezcla select + número + botón con enlace bidireccional independiente', async () => {
+    const [select, importe] = controls(fields()[2]);
+    (select as HTMLSelectElement).value = 'USD';
+    select.dispatchEvent(new Event('change'));
+    importe.dispatchEvent(new Event('focus'));
+    await tick(fixture);
+    typeInto(importe as HTMLInputElement, '99,5');
+    importe.dispatchEvent(new Event('blur'));
+    fields()[2].querySelector('button')!.click();
+    await tick(fixture);
+    expect(fixture.componentInstance.moneda()).toBe('USD');
+    expect(fixture.componentInstance.importe()).toBe(99.5);
+    expect(fixture.componentInstance.clicks()).toBe(1);
+  });
+
+  it('un control fuera de un sbo-field también funciona (con su propio id)', async () => {
+    const solo = TestBed.createComponent(TextInput);
+    solo.componentRef.setInput('value', 'x');
+    await tick(solo);
+    const input = solo.nativeElement.querySelector('input') as HTMLInputElement;
+    expect(input.id).toMatch(/^sbo-c-\d+$/);
+    expect(input.value).toBe('x');
+  });
+});

apps/web/src/app/shared/form/fields.ts

@@ -0,0 +1,120 @@
+import { ChangeDetectionStrategy, Component, input, model } from '@angular/core';
+import { FieldBase } from './field-base';
+import { DateInput, NumberInput, SelectInput, type SelectOption, TextInput, TextareaInput } from './controls';
+import { SboField } from './sbo-field';
+
+/*
+ * Campos con etiqueta de un solo control: atajo de `<sbo-field>` + el control correspondiente.
+ * Para filas con varios controles (input + botón, serie + número...) usar `sbo-field` directamente.
+ */
+
+@Component({
+  selector: 'sbo-text-field',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  imports: [SboField, TextInput],
+  template: `
+    <sbo-field [label]="label()" [required]="required()" [error]="error()">
+      <sbo-input
+        [(value)]="value"
+        [readonly]="readOnly()"
+        [disabled]="disabled()"
+        [required]="required()"
+        [maxlength]="maxlength()"
+        [placeholder]="placeholder()"
+      />
+    </sbo-field>
+  `,
+  styles: ':host { display: block; }',
+})
+export class TextField extends FieldBase {
+  readonly value = model('');
+  readonly maxlength = input<number>();
+  readonly placeholder = input('');
+}
+
+@Component({
+  selector: 'sbo-textarea-field',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  imports: [SboField, TextareaInput],
+  template: `
+    <sbo-field [label]="label()" [required]="required()" [error]="error()">
+      <sbo-textarea
+        [(value)]="value"
+        [readonly]="readOnly()"
+        [disabled]="disabled()"
+        [required]="required()"
+        [maxlength]="maxlength()"
+        [placeholder]="placeholder()"
+        [rows]="rows()"
+      />
+    </sbo-field>
+  `,
+  styles: ':host { display: block; }',
+})
+export class TextareaField extends FieldBase {
+  readonly value = model('');
+  readonly maxlength = input<number>();
+  readonly placeholder = input('');
+  readonly rows = input(3);
+}
+
+@Component({
+  selector: 'sbo-number-field',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  imports: [SboField, NumberInput],
+  template: `
+    <sbo-field [label]="label()" [required]="required()" [error]="error()">
+      <sbo-number
+        [(value)]="value"
+        [decimals]="decimals()"
+        [readonly]="readOnly()"
+        [disabled]="disabled()"
+        [required]="required()"
+      />
+    </sbo-field>
+  `,
+  styles: ':host { display: block; }',
+})
+export class NumberField extends FieldBase {
+  readonly value = model<number | null>(null);
+  readonly decimals = input<number>();
+}
+
+@Component({
+  selector: 'sbo-date-field',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  imports: [SboField, DateInput],
+  template: `
+    <sbo-field [label]="label()" [required]="required()" [error]="error()">
+      <sbo-date [(value)]="value" [readonly]="readOnly()" [disabled]="disabled()" [required]="required()" />
+    </sbo-field>
+  `,
+  styles: ':host { display: block; }',
+})
+export class DateField extends FieldBase {
+  readonly value = model('');
+}
+
+@Component({
+  selector: 'sbo-select-field',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  imports: [SboField, SelectInput],
+  template: `
+    <sbo-field [label]="label()" [required]="required()" [error]="error()">
+      <sbo-select
+        [(value)]="value"
+        [options]="options()"
+        [placeholder]="placeholder()"
+        [readonly]="readOnly()"
+        [disabled]="disabled()"
+        [required]="required()"
+      />
+    </sbo-field>
+  `,
+  styles: ':host { display: block; }',
+})
+export class SelectField extends FieldBase {
+  readonly options = input.required<readonly SelectOption[]>();
+  readonly value = model<string | number | null>(null);
+  readonly placeholder = input<string>();
+}

apps/web/src/app/shared/form/index.ts

@@ -1,7 +1,6 @@
-export { DateField } from './date-field';
-export { LookupField } from './lookup-field';
-export { NumberField } from './number-field';
+// Fila y controles combinables
+export { DateInput, NumberInput, type SelectOption, SelectInput, TextInput, TextareaInput } from './controls';
 export { SboField } from './sbo-field';
-export { type SelectOption, SelectField } from './select-field';
-export { TextField } from './text-field';
-export { TextareaField } from './textarea-field';
+// Atajos con etiqueta (un control por fila)
+export { DateField, NumberField, SelectField, TextField, TextareaField } from './fields';
+export { LookupField } from './lookup-field';

apps/web/src/app/shared/form/lookup-field.ts

@@ -1,7 +1,6 @@
 import {
   ChangeDetectionStrategy,
   Component,
-  type ElementRef,
   booleanAttribute,
   input,
   model,
@@ -11,6 +10,7 @@ import {
 } from '@angular/core';
 import { ValueHelp } from '../value-help/value-help';
 import type { VhLookup, VhRow } from '../value-help/value-help.types';
+import { TextInput } from './controls';
 import { FieldBase } from './field-base';
 import { SboField } from './sbo-field';
 
@@ -21,42 +21,34 @@ import { SboField } from './sbo-field';
 @Component({
   selector: 'sbo-lookup-field',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  imports: [SboField, ValueHelp],
+  imports: [SboField, TextInput, ValueHelp],
   template: `
     <sbo-field
       [label]="label()"
-      [for]="id"
       [required]="required()"
       [error]="error()"
       action
       [linkable]="linkable()"
       (labelClick)="linkClick.emit()"
     >
-      <div class="sbo-pick">
-        <input
-          #box
-          class="sbo-in"
-          type="text"
-          autocomplete="off"
-          [id]="id"
-          [value]="value()"
-          [readOnly]="readOnly()"
-          [disabled]="disabled()"
-          [required]="required()"
-          [attr.aria-invalid]="error() ? 'true' : null"
-          (input)="value.set($any($event.target).value)"
-          (keydown.f4)="$event.preventDefault(); openList()"
-        />
-        <button
-          type="button"
-          title="Lista de valores (F4)"
-          [attr.aria-label]="'Abrir la lista de ' + label()"
-          [disabled]="readOnly() || disabled()"
-          (click)="openList()"
-        >
-          …
-        </button>
-      </div>
+      <sbo-input
+        #box
+        [(value)]="value"
+        [readonly]="readOnly()"
+        [disabled]="disabled()"
+        [required]="required()"
+        (keydown.f4)="$event.preventDefault(); openList()"
+      />
+      <button
+        type="button"
+        class="sbo-btn"
+        title="Lista de valores (F4)"
+        [attr.aria-label]="'Abrir la lista de ' + label()"
+        [disabled]="readOnly() || disabled()"
+        (click)="openList()"
+      >
+        …
+      </button>
     </sbo-field>
     <sbo-value-help
       [open]="listOpen()"
@@ -81,7 +73,7 @@ export class LookupField extends FieldBase {
   readonly linkClick = output<void>();
 
   protected readonly listOpen = signal(false);
-  private readonly box = viewChild.required<ElementRef<HTMLInputElement>>('box');
+  private readonly box = viewChild.required<TextInput>('box');
 
   protected openList(): void {
     if (!this.readOnly() && !this.disabled()) this.listOpen.set(true);
@@ -89,7 +81,7 @@ export class LookupField extends FieldBase {
 
   protected closeList(): void {
     this.listOpen.set(false);
-    this.box().nativeElement.focus();
+    this.box().focus();
   }
 
   protected onPicked(rows: VhRow[]): void {

apps/web/src/app/shared/form/number-field.ts

@@ -1,69 +0,0 @@
-import { ChangeDetectionStrategy, Component, computed, input, model, signal } from '@angular/core';
-import { formatNumber, parseDecimal } from '../../core/format';
-import { FieldBase } from './field-base';
-import { SboField } from './sbo-field';
-
-/**
- * Número o importe. Fuera de foco se muestra formateado (`1,234.50`); al editar se
- * escribe en texto libre y se interpreta al salir (acepta `12,5` y `1,234.50`).
- */
-@Component({
-  selector: 'sbo-number-field',
-  changeDetection: ChangeDetectionStrategy.OnPush,
-  imports: [SboField],
-  template: `
-    <sbo-field [label]="label()" [for]="id" [required]="required()" [error]="error()">
-      <input
-        class="sbo-in num"
-        type="text"
-        inputmode="decimal"
-        autocomplete="off"
-        [id]="id"
-        [value]="display()"
-        [readOnly]="readOnly()"
-        [disabled]="disabled()"
-        [required]="required()"
-        [attr.aria-invalid]="error() ? 'true' : null"
-        (focus)="startEditing($event)"
-        (input)="draft.set($any($event.target).value)"
-        (blur)="finishEditing()"
-      />
-    </sbo-field>
-  `,
-  styles: ':host { display: block; }',
-})
-export class NumberField extends FieldBase {
-  readonly value = model<number | null>(null);
-  /** Decimales fijos al mostrar y redondear (importes: 2). Sin él: hasta 3, sin ceros sobrantes. */
-  readonly decimals = input<number>();
-
-  protected readonly editing = signal(false);
-  protected readonly draft = signal('');
-  protected readonly display = computed(() =>
-    this.editing() ? this.draft() : formatNumber(this.value(), this.decimals()),
-  );
-
-  protected startEditing(event: FocusEvent): void {
-    if (this.readOnly()) return;
-    const v = this.value();
-    this.draft.set(v === null ? '' : String(v));
-    this.editing.set(true);
-    // se selecciona el contenido una vez que el valor editable reemplazó al formateado
-    const input = event.target as HTMLInputElement;
-    queueMicrotask(() => input.select());
-  }
-
-  protected finishEditing(): void {
-    if (!this.editing()) return;
-    this.editing.set(false);
-    const text = this.draft().trim();
-    if (text === '') {
-      this.value.set(null);
-      return;
-    }
-    const parsed = parseDecimal(text);
-    if (parsed === null) return; // no es un número: se conserva el valor anterior
-    const d = this.decimals();
-    this.value.set(d === undefined ? parsed : Math.round((parsed + Number.EPSILON) * 10 ** d) / 10 ** d);
-  }
-}

apps/web/src/app/shared/form/sbo-field.ts

@@ -1,8 +1,13 @@
 import { ChangeDetectionStrategy, Component, booleanAttribute, input, output } from '@angular/core';
 
+let nextId = 0;
+
 /**
- * Fila de formulario SBO: etiqueta a la izquierda y el control proyectado a la derecha.
+ * Fila de formulario SBO: etiqueta a la izquierda y, a la derecha, uno o varios
+ * controles en una misma línea (input + botón, select + botón, serie + número...).
  * `action` pinta la flecha dorada de SAP (campo que enlaza a otro objeto o a una lista).
+ *
+ * El primer control de la fila toma el `id` al que apunta la etiqueta (ver `claimId`).
  */
 @Component({
   selector: 'sbo-field',
@@ -10,7 +15,7 @@ import { ChangeDetectionStrategy, Component, booleanAttribute, input, output } f
   template: `
     <div class="f">
       <label
-        [attr.for]="for()"
+        [attr.for]="controlId"
         [class.req]="required()"
         [class.ga]="action()"
         [class.link]="linkable()"
@@ -18,9 +23,9 @@ import { ChangeDetectionStrategy, Component, booleanAttribute, input, output } f
         >{{ label() }}</label
       >
       <div class="ctl">
-        <ng-content />
+        <div class="sbo-group"><ng-content /></div>
         @if (error()) {
-          <span class="err" role="alert" [id]="for() + '-err'">{{ error() }}</span>
+          <span class="err" role="alert" [id]="errorId">{{ error() }}</span>
         }
       </div>
     </div>
@@ -79,8 +84,6 @@ import { ChangeDetectionStrategy, Component, booleanAttribute, input, output } f
 })
 export class SboField {
   readonly label = input.required<string>();
-  /** `id` del control, para enlazar la etiqueta. */
-  readonly for = input<string>();
   readonly required = input(false, { transform: booleanAttribute });
   readonly action = input(false, { transform: booleanAttribute });
   /** La etiqueta es un enlace (ej. abrir el socio de negocio). */
@@ -88,4 +91,15 @@ export class SboField {
   readonly error = input<string>();
 
   readonly labelClick = output<void>();
+
+  readonly controlId = `sbo-f-${++nextId}`;
+  readonly errorId = `${this.controlId}-err`;
+  private claimed = false;
+
+  /** El primer control de la fila recibe el id de la etiqueta; los demás deben llevar su `ariaLabel`. */
+  claimId(): string | null {
+    if (this.claimed) return null;
+    this.claimed = true;
+    return this.controlId;
+  }
 }

apps/web/src/app/shared/form/select-field.ts

@@ -1,45 +0,0 @@
-import { ChangeDetectionStrategy, Component, input, model } from '@angular/core';
-import { FieldBase } from './field-base';
-import { SboField } from './sbo-field';
-
-export interface SelectOption {
-  value: string | number;
-  label: string;
-}
-
-@Component({
-  selector: 'sbo-select-field',
-  changeDetection: ChangeDetectionStrategy.OnPush,
-  imports: [SboField],
-  template: `
-    <sbo-field [label]="label()" [for]="id" [required]="required()" [error]="error()">
-      <select
-        class="sbo-sel"
-        [id]="id"
-        [disabled]="disabled() || readOnly()"
-        [required]="required()"
-        [attr.aria-invalid]="error() ? 'true' : null"
-        (change)="choose($any($event.target).value)"
-      >
-        @if (placeholder() !== undefined) {
-          <option value="" [selected]="value() === null">{{ placeholder() }}</option>
-        }
-        @for (o of options(); track o.value) {
-          <option [value]="o.value" [selected]="o.value === value()">{{ o.label }}</option>
-        }
-      </select>
-    </sbo-field>
-  `,
-  styles: ':host { display: block; }',
-})
-export class SelectField extends FieldBase {
-  readonly options = input.required<readonly SelectOption[]>();
-  readonly value = model<string | number | null>(null);
-  /** Opción vacía inicial (ej. "— Seleccione —"); sin él, no se ofrece. */
-  readonly placeholder = input<string>();
-
-  protected choose(raw: string): void {
-    const option = this.options().find((o) => String(o.value) === raw);
-    this.value.set(option ? option.value : null);
-  }
-}

apps/web/src/app/shared/form/text-field.ts

@@ -1,34 +0,0 @@
-import { ChangeDetectionStrategy, Component, input, model } from '@angular/core';
-import { FieldBase } from './field-base';
-import { SboField } from './sbo-field';
-
-@Component({
-  selector: 'sbo-text-field',
-  changeDetection: ChangeDetectionStrategy.OnPush,
-  imports: [SboField],
-  template: `
-    <sbo-field [label]="label()" [for]="id" [required]="required()" [error]="error()">
-      <input
-        class="sbo-in"
-        type="text"
-        autocomplete="off"
-        [id]="id"
-        [value]="value()"
-        [readOnly]="readOnly()"
-        [disabled]="disabled()"
-        [required]="required()"
-        [attr.maxlength]="maxlength()"
-        [placeholder]="placeholder()"
-        [attr.aria-invalid]="error() ? 'true' : null"
-        [attr.aria-describedby]="error() ? id + '-err' : null"
-        (input)="value.set($any($event.target).value)"
-      />
-    </sbo-field>
-  `,
-  styles: ':host { display: block; }',
-})
-export class TextField extends FieldBase {
-  readonly value = model('');
-  readonly maxlength = input<number>();
-  readonly placeholder = input('');
-}

apps/web/src/app/shared/form/textarea-field.ts

@@ -1,33 +0,0 @@
-import { ChangeDetectionStrategy, Component, input, model } from '@angular/core';
-import { FieldBase } from './field-base';
-import { SboField } from './sbo-field';
-
-@Component({
-  selector: 'sbo-textarea-field',
-  changeDetection: ChangeDetectionStrategy.OnPush,
-  imports: [SboField],
-  template: `
-    <sbo-field [label]="label()" [for]="id" [required]="required()" [error]="error()">
-      <textarea
-        class="sbo-ta"
-        [id]="id"
-        [value]="value()"
-        [readOnly]="readOnly()"
-        [disabled]="disabled()"
-        [required]="required()"
-        [attr.maxlength]="maxlength()"
-        [placeholder]="placeholder()"
-        [rows]="rows()"
-        [attr.aria-invalid]="error() ? 'true' : null"
-        (input)="value.set($any($event.target).value)"
-      ></textarea>
-    </sbo-field>
-  `,
-  styles: ':host { display: block; }',
-})
-export class TextareaField extends FieldBase {
-  readonly value = model('');
-  readonly maxlength = input<number>();
-  readonly placeholder = input('');
-  readonly rows = input(3);
-}

apps/web/src/styles/forms.css

@@ -43,24 +43,26 @@
   border-color: var(--err);
 }
 
-/* Campo con botón "…" (elegir de la lista) */
-.sbo-pick {
-  display: grid;
-  grid-template-columns: minmax(0, 1fr) 26px;
-  gap: 2px;
+/* Controles de una misma fila (dentro de sbo-field): input + botón, serie + número... */
+.sbo-group {
+  display: flex;
+  gap: 4px;
+  align-items: flex-start;
 }
-.sbo-pick button {
+.sbo-btn {
+  flex: none;
   height: 23px;
-  padding: 0;
+  min-width: 26px;
+  padding: 0 6px;
   border: 1px solid var(--field-b);
   border-radius: 2px;
   background: var(--btn);
   cursor: pointer;
 }
-.sbo-pick button:hover:not(:disabled) {
+.sbo-btn:hover:not(:disabled) {
   background: var(--btn-h);
 }
-.sbo-pick button:disabled {
+.sbo-btn:disabled {
   opacity: 0.45;
   cursor: default;
 }
@@ -76,12 +78,6 @@
   gap: 4px;
   align-content: start;
 }
-/* Dos controles en una fila (ej. serie + número) */
-.sbo-pair {
-  display: grid;
-  grid-template-columns: 72px minmax(0, 1fr);
-  gap: 4px;
-}
 @media (max-width: 900px) {
   .sbo-hdr {
     grid-template-columns: 1fr;