feat(core): add internal gesture and key navigation controllers

projects/core/src/index.test.lighthouse.ts

@@ -18,7 +18,7 @@ describe('lighthouse report', () => {
     expect(report.scores.performance).toBe(100);
     expect(report.scores.accessibility).toBe(100);
     expect(report.scores.bestPractices).toBe(100);
-    expect(report.payload.javascript.requests['index.js'].kb).toBeLessThan(106.14);
+    expect(report.payload.javascript.requests['index.js'].kb).toBeLessThan(107);
 
     // if sudden drop in size, check vite bundle config and bundle demo to ensure side effects are properly preserved
     expect(report.payload.javascript.requests['index.js'].kb).toBeGreaterThan(100);
@@ -106,6 +106,6 @@ describe('lighthouse report', () => {
     expect(report.scores.performance).toBe(100);
     expect(report.scores.accessibility).toBe(100);
     expect(report.scores.bestPractices).toBe(100);
-    expect(report.payload.javascript.requests[Object.keys(report.payload.javascript.requests)[0]].kb).toBeLessThan(88);
+    expect(report.payload.javascript.requests[Object.keys(report.payload.javascript.requests)[0]].kb).toBeLessThan(89);
   });
 });

projects/core/src/internal/controllers/gesture.controller.examples.ts

@@ -0,0 +1,69 @@
+// SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import { css, html, LitElement } from 'lit';
+import { GestureController } from '@nvidia-elements/core/internal';
+
+export default {
+  title: 'Internal/Controllers'
+};
+
+class GestureDemoElement extends LitElement {
+  readonly #gestureController = new GestureController(this, {
+    getCapabilities: () => ({ drag: true, pan: false, pinch: false, wheel: false })
+  });
+
+  static styles = css`
+    :host {
+      cursor: grab;
+      display: grid;
+      height: 64px;
+      place-items: center;
+      width: 64px;
+    }
+
+    :host([data-active]) {
+      cursor: grabbing;
+    }
+  `;
+
+  constructor() {
+    super();
+    this.#gestureController.target = this;
+  }
+
+  render() {
+    return html`drag`;
+  }
+}
+
+if (!customElements.get('gesture-controller-demo-element')) {
+  customElements.define('gesture-controller-demo-element', GestureDemoElement);
+}
+
+/**
+ * @summary Drag recognition delivered through gesture and unmatched pointer events. Use event details to move content and represent active pointer state.
+ * @tags test-case
+ */
+export const Drag = {
+  render: () => html`
+<gesture-controller-demo-element></gesture-controller-demo-element>
+<script type="module">
+  const element = document.querySelector('gesture-controller-demo-element');
+  let x = 0;
+  let y = 0;
+
+  element.addEventListener('nve-pointer-input', ({ detail }) => {
+    if (detail.kind === 'pointerdown') element.dataset.active = '';
+    if (detail.kind === 'pointerup' || detail.kind === 'pointercancel') delete element.dataset.active;
+  });
+
+  element.addEventListener('nve-gesture', ({ detail }) => {
+    if (detail.kind !== 'drag') return;
+    x += detail.movementX;
+    y += detail.movementY;
+    element.style.translate = x + 'px ' + y + 'px';
+  });
+</script>
+`
+};