feat: anade app playground con catalogo de componentes

apps/playground/src/app/app.config.ts

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+import {
+  ApplicationConfig,
+  inject,
+  provideAppInitializer,
+  provideBrowserGlobalErrorListeners,
+} from '@angular/core';
+import { provideAnimationsAsync } from '@angular/platform-browser/animations/async';
+import { provideStore } from '@ngrx/store';
+import {
+  TranslateLoader,
+  TranslationObject,
+  provideTranslateService,
+} from '@ngx-translate/core';
+import { Observable, of } from 'rxjs';
+
+import { IconRegistryService, deviceConfigsReducer, featureKey } from '@pi/ui';
+
+/**
+ * Diccionario en línea: la librería resuelve los textos con `| translate`, y
+ * montar el loader HTTP real exigiría ficheros de i18n que no forman parte de
+ * la librería. Con las claves que faltan ngx-translate devuelve la propia
+ * clave, que para un catálogo de componentes es suficiente.
+ */
+const TRANSLATIONS: TranslationObject = {
+  common: {
+    close: 'Cerrar',
+    min: 'Mín',
+    max: 'Máx',
+    save: 'Guardar',
+    reset: 'Borrar',
+    validator: {
+      requiredField: 'Este campo es obligatorio',
+      onlyNumbers: 'Sólo se admiten números',
+      enterValidEmail: 'Introduce un email válido',
+      minimumPasswordCharacters: 'La contraseña es demasiado corta',
+    },
+  },
+};
+
+class PlaygroundTranslateLoader implements TranslateLoader {
+  getTranslation(): Observable<TranslationObject> {
+    return of(TRANSLATIONS);
+  }
+}
+
+export const appConfig: ApplicationConfig = {
+  providers: [
+    provideBrowserGlobalErrorListeners(),
+    provideAnimationsAsync(),
+
+    // Los iconos son SVG registrados en el MatIconRegistry (assets/icons).
+    provideAppInitializer(() => inject(IconRegistryService).init()),
+
+    provideTranslateService({
+      fallbackLang: 'es',
+      loader: { provide: TranslateLoader, useClass: PlaygroundTranslateLoader },
+    }),
+
+    // data-table y background-image leen el tipo de dispositivo del store.
+    provideStore({ [featureKey]: deviceConfigsReducer }),
+  ],
+};

apps/playground/src/app/app.html

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+<header class="page-header">
+  <h1>@pi/ui</h1>
+  <p>
+    Catálogo de la librería migrada a Angular 22: componentes standalone,
+    señales, OnPush y Signal Forms.
+  </p>
+  <span class="event">Último evento: {{ lastEvent() }}</span>
+</header>
+
+<main>
+  <div class="col">
+    <app-section
+      title="Formularios (Signal Forms)"
+      hint="Cada campo se enlaza con [formField]; la validación vive en el form()."
+    >
+      <div class="stack">
+        <pi-text-field [formField]="f.name">
+          <pi-label>Nombre</pi-label>
+        </pi-text-field>
+
+        <pi-email-field [formField]="f.email">
+          <pi-label>Email</pi-label>
+        </pi-email-field>
+
+        <pi-password-field [formField]="f.password">
+          <pi-label>Contraseña</pi-label>
+        </pi-password-field>
+
+        <pi-textarea [formField]="f.bio">
+          <pi-label>Biografía</pi-label>
+        </pi-textarea>
+
+        <pi-incremental-number-field [formField]="f.age">
+          <pi-label>Edad</pi-label>
+        </pi-incremental-number-field>
+
+        <pi-currency-field [formField]="f.price">
+          <pi-label>Precio</pi-label>
+        </pi-currency-field>
+
+        <pi-incremental-range-field
+          [formField]="f.range"
+          [minValue]="0"
+          [maxValue]="100"
+          unit=""
+          [step]="1"
+        />
+
+        <pi-search-field [formField]="f.search" placeholder="Buscar…" />
+
+        <label class="inline">
+          <span>Newsletter</span>
+          <pi-slide-toggle [formField]="f.newsletter" />
+        </label>
+
+        <pi-slider
+          [formField]="f.volume"
+          unit="%"
+          label="Volumen"
+          [maxValue]="100"
+        />
+      </div>
+    </app-section>
+  </div>
+
+  <div class="col">
+    <app-section title="Estado del formulario" hint="Modelo y validez en vivo.">
+      <div class="stack full">
+        <p class="state">
+          <strong>válido:</strong> {{ f().valid() }} ·
+          <strong>tocado:</strong> {{ f().touched() }} ·
+          <strong>modificado:</strong> {{ f().dirty() }}
+        </p>
+        <pre>{{ modelJson() }}</pre>
+      </div>
+    </app-section>
+
+    <app-section title="Botones">
+      <button pi-primary large (click)="log('botón grande')">Primario</button>
+      <button pi-ghost small (click)="log('botón ghost')">Ghost</button>
+      <button pi-outline (click)="log('botón outline')">Outline</button>
+      <button pi-primary w100 (click)="log('botón w100')">
+        Ancho completo
+      </button>
+      <pi-action-button text="Acción" (execute)="log('action-button')" />
+      <pi-icon-button icon="add" text="Añadir" (execute)="log('icon-button')" />
+      <pi-chevron-button (toggle)="log('chevron')" />
+      <pi-close-button (toggle)="log('close')" />
+      <pi-hamburger (toggle)="log('hamburger')" />
+    </app-section>
+
+    <app-section title="Iconos y texto">
+      <pi-icon icon="add" color="primary" size="large" />
+      <pi-icon icon="search" color="accent" size="large" />
+      <pi-icon icon="close" color="warn" size="large" />
+      <pi-icon
+        icon="check"
+        color="primary"
+        appearance="fill"
+        [isStroked]="true"
+      />
+      <pi-text-viewer value="Texto con el visor" fontSize="m" color="black" />
+      <pi-divider color="primary" width="large" label="Separador" />
+    </app-section>
+
+    <app-section title="Chips">
+      <pi-chip label="Etiqueta" color="primary" />
+      <pi-chip-status status="success" label="Correcto" />
+      <pi-chip-status status="error" label="Error" />
+      <pi-chip-status status="pending" label="Pendiente" />
+      <pi-chip-value [value]="42" unit="%" label="Progreso" />
+      <pi-chip-action
+        label="Acción"
+        [isActive]="true"
+        (execute)="log('chip-action')"
+      />
+    </app-section>
+
+    <app-section
+      title="Feedback y navegación"
+      hint="pi-spinner se omite a propósito: es un overlay position:fixed de página completa, no un indicador en línea."
+    >
+      <pi-progress-spinner label="Progreso" [value]="65" [diameter]="72" />
+      <pi-progress-bar label="Carga" [value]="65" />
+      <pi-paginator
+        [(currentPage)]="currentPage"
+        [pageSize]="10"
+        [totalPages]="5"
+        [isDisabled]="false"
+        (changePage)="log('página ' + $event)"
+      />
+    </app-section>
+  </div>
+</main>

apps/playground/src/app/app.scss

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+:host {
+  display: block;
+  max-width: 1400px;
+  margin: 0 auto;
+  padding: 2rem 1.5rem 4rem;
+}
+
+.page-header {
+  margin-bottom: 2rem;
+
+  h1 {
+    margin: 0;
+    font-size: 2rem;
+    font-weight: 700;
+    color: #5c82e9;
+  }
+
+  p {
+    margin: 0.5rem 0 0;
+    color: #6b7280;
+    max-width: 60ch;
+  }
+
+  .event {
+    display: inline-block;
+    margin-top: 0.75rem;
+    padding: 0.25rem 0.6rem;
+    border-radius: 999px;
+    background: #eef2ff;
+    color: #4c5fd7;
+    font-size: 0.8rem;
+    font-variant-numeric: tabular-nums;
+  }
+}
+
+main {
+  display: grid;
+  grid-template-columns: minmax(320px, 420px) 1fr;
+  gap: 1.5rem;
+  align-items: start;
+}
+
+@media (max-width: 900px) {
+  main {
+    grid-template-columns: 1fr;
+  }
+}
+
+.stack {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+  width: 100%;
+
+  &.full > * {
+    width: 100%;
+  }
+}
+
+.inline {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+}
+
+.state {
+  margin: 0;
+  font-size: 0.85rem;
+  color: #374151;
+}
+
+pre {
+  margin: 0;
+  padding: 0.9rem;
+  border-radius: 8px;
+  background: #0f172a;
+  color: #cbd5f5;
+  font-size: 0.78rem;
+  line-height: 1.5;
+  overflow-x: auto;
+}

apps/playground/src/app/app.ts

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+import { ChangeDetectionStrategy, Component, signal } from '@angular/core';
+import {
+  FormField,
+  email,
+  form,
+  maxLength,
+  min,
+  required,
+} from '@angular/forms/signals';
+
+import {
+  PiActionButtonComponent,
+  PiChevronButtonComponent,
+  PiChipActionComponent,
+  PiChipComponent,
+  PiChipStatusComponent,
+  PiChipValueComponent,
+  PiCloseButtonComponent,
+  PiCurrencyFieldComponent,
+  PiDividerComponent,
+  PiEmailFieldComponent,
+  PiGhostButtonDirective,
+  PiHamburgerComponent,
+  PiIconButtonComponent,
+  PiIconComponent,
+  PiIncrementalNumberFieldComponent,
+  PiIncrementalRangeFieldComponent,
+  PiLabelDirective,
+  PiLargeButtonDirective,
+  PiOutlineButtonDirective,
+  PiPaginatorComponent,
+  PiPasswordFieldComponent,
+  PiProgressBarComponent,
+  PiRange,
+  PiSearchFieldComponent,
+  PiSlideToggleComponent,
+  PiSliderComponent,
+  PiSmallButtonDirective,
+  PiProgressSpinnerComponent,
+  PiTextFieldComponent,
+  PiTextViewerComponent,
+  PiTextareaComponent,
+  PiW100ButtonDirective,
+} from '@pi/ui';
+
+import { ShowcaseSection } from './showcase-section';
+
+interface DemoModel {
+  name: string;
+  email: string;
+  password: string;
+  bio: string;
+  age: number | null;
+  price: number | null;
+  quantity: number | null;
+  range: PiRange;
+  volume: number;
+  newsletter: boolean;
+  search: string;
+}
+
+@Component({
+  selector: 'app-root',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  templateUrl: './app.html',
+  styleUrl: './app.scss',
+  imports: [
+    FormField,
+    ShowcaseSection,
+    // Botones
+    PiActionButtonComponent,
+    PiChevronButtonComponent,
+    PiCloseButtonComponent,
+    PiHamburgerComponent,
+    PiIconButtonComponent,
+    PiGhostButtonDirective,
+    PiOutlineButtonDirective,
+    PiLabelDirective,
+    PiLargeButtonDirective,
+    PiSmallButtonDirective,
+    PiW100ButtonDirective,
+    // Contenido
+    PiIconComponent,
+    PiTextViewerComponent,
+    PiDividerComponent,
+    PiChipComponent,
+    PiChipStatusComponent,
+    PiChipValueComponent,
+    PiChipActionComponent,
+    // Feedback
+    PiProgressSpinnerComponent,
+    PiProgressBarComponent,
+    PiPaginatorComponent,
+    // Formularios
+    PiTextFieldComponent,
+    PiEmailFieldComponent,
+    PiPasswordFieldComponent,
+    PiTextareaComponent,
+    PiIncrementalNumberFieldComponent,
+    PiCurrencyFieldComponent,
+    PiIncrementalRangeFieldComponent,
+    PiSearchFieldComponent,
+    PiSlideToggleComponent,
+    PiSliderComponent,
+  ],
+})
+export class App {
+  /* --- Signal Forms ----------------------------------------------------- */
+
+  private readonly model = signal<DemoModel>({
+    name: '',
+    email: '',
+    password: '',
+    bio: '',
+    age: null,
+    price: null,
+    quantity: 1,
+    range: { from: 0, to: 10 },
+    volume: 40,
+    newsletter: false,
+    search: '',
+  });
+
+  protected readonly f = form(this.model, (m) => {
+    required(m.name, { message: 'El nombre es obligatorio' });
+    maxLength(m.bio, 140, { message: 'Máximo 140 caracteres' });
+    email(m.email, { message: 'Introduce un email válido' });
+    min(m.age, 18, { message: 'Debes ser mayor de edad' });
+  });
+
+  /** Se muestra en el panel lateral para ver el modelo en vivo. */
+  protected readonly modelJson = () => JSON.stringify(this.model(), null, 2);
+
+  /* --- Estado de los demás componentes ---------------------------------- */
+
+  protected readonly currentPage = signal(1);
+  protected readonly lastEvent = signal('—');
+
+  protected log(what: string): void {
+    this.lastEvent.set(`${what} · ${new Date().toLocaleTimeString('es-ES')}`);
+  }
+}

apps/playground/src/app/showcase-section.ts

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+import { ChangeDetectionStrategy, Component, input } from '@angular/core';
+
+/** Marco común de cada apartado del catálogo. */
+@Component({
+  selector: 'app-section',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  template: `
+    <section>
+      <header>
+        <h2>{{ title() }}</h2>
+        @if (hint()) {
+          <p>{{ hint() }}</p>
+        }
+      </header>
+      <div class="content"><ng-content /></div>
+    </section>
+  `,
+  styles: `
+    section {
+      background: #fff;
+      border: 1px solid #e7e9ee;
+      border-radius: 12px;
+      padding: 1.5rem;
+      margin-bottom: 1.5rem;
+    }
+    header {
+      border-bottom: 1px solid #eef0f4;
+      margin-bottom: 1.25rem;
+      padding-bottom: 0.75rem;
+    }
+    h2 {
+      margin: 0;
+      font-size: 1rem;
+      font-weight: 600;
+      letter-spacing: 0.02em;
+      text-transform: uppercase;
+      color: #5c82e9;
+    }
+    p {
+      margin: 0.35rem 0 0;
+      font-size: 0.85rem;
+      color: #6b7280;
+    }
+    .content {
+      display: flex;
+      flex-wrap: wrap;
+      gap: 1.25rem;
+      align-items: flex-start;
+    }
+  `,
+})
+export class ShowcaseSection {
+  readonly title = input.required<string>();
+  readonly hint = input<string>();
+}