@@ -9,6 +9,7 @@ import { listIosApps } from './core/app-resolution.ts';
 import type { DeviceBinding, RuntimeFacts } from '@agent-device/contracts/platform-runtime';
 import type { PlatformRuntimeOperations } from '@agent-device/contracts/platform-runtime-operations';
 import type { SnapshotRuntimeHost } from '@agent-device/contracts/snapshot-runtime';
+import { HOVER_UNAVAILABLE_HINT } from '@agent-device/contracts/touch-runtime';
 import type { AppleOS, DeviceInfo } from '@agent-device/kernel/device';
 import { createApplePlatformRuntime } from './runtime.ts';
 import { platformRuntimeHostFixture } from './runtime.fixtures.ts';
@@ -220,6 +221,29 @@ test.each(Object.entries(leaves))(
   },
 );
 
+test('hover has no Apple interactor route on macOS, iOS, or tvOS; the touch family reports its typed denial', async () => {
+  for (const device of [leaves.macos, leaves.ios, leaves.tvos]) {
+    const binding = await createApplePlatformRuntime(platformRuntimeHostFixture()).bind({
+      device,
+      intent: { kind: 'ordinary' },
+      scope: {
+        signal: new AbortController().signal,
+        diagnostics: { emit: () => {} },
+        progress: { report: () => {} },
+      },
+    });
+    const hoverDenial = {
+      available: false,
+      reason: 'unsupported-platform-leaf',
+      hint: HOVER_UNAVAILABLE_HINT,
+    };
+    expect(binding.facts.operations.hoverPoint).toEqual(hoverDenial);
+    expect(binding.facts.operations.hoverRef).toEqual(hoverDenial);
+    expect(binding.operations.hoverPoint).toBeTypeOf('undefined');
+    expect(binding.operations.hoverRef).toBeTypeOf('undefined');
+  }
+});
+
 /** Both the fact and the bound operation function agree on availability, for one operation. */
 function expectOperationAvailability(
   binding: DeviceBinding<PlatformRuntimeOperations>,
 
@@ -5,6 +5,7 @@ import type {
   PlatformRuntimeOperations,
 } from '@agent-device/contracts/platform-runtime-operations';
 import type { SnapshotRuntimeHost } from '@agent-device/contracts/snapshot-runtime';
+import { HOVER_UNAVAILABLE_HINT } from '@agent-device/contracts/touch-runtime';
 import type { DeviceInfo } from '@agent-device/kernel/device';
 import { createLinuxPlatformRuntime } from './runtime.ts';
 
@@ -306,6 +307,24 @@ test.each([
   expect(facts.operations.gestureViewport.available).toBe(false);
 });
 
+test('hover has no Linux interactor route; the touch family reports its typed denial', async () => {
+  const facts = await createLinuxPlatformRuntime(lifecycleHost()).inspectFacts({
+    platform: 'linux',
+    id: 'linux',
+    name: 'Linux',
+    kind: 'device',
+    target: 'desktop',
+    booted: true,
+  });
+  const hoverDenial = {
+    available: false,
+    reason: 'unsupported-platform-leaf',
+    hint: HOVER_UNAVAILABLE_HINT,
+  };
+  expect(facts.operations.hoverPoint).toEqual(hoverDenial);
+  expect(facts.operations.hoverRef).toEqual(hoverDenial);
+});
+
 test('binds the Linux coordinate-fling tier without a frame read', async () => {
   const binding = await createLinuxPlatformRuntime(lifecycleHost()).bind({
     device: {