fix(tui): address latest review feedback

ui-tui/src/__tests__/interactionMode.test.ts

@@ -1,28 +0,0 @@
-import { afterEach, describe, expect, it, vi } from 'vitest'
-
-import { getInteractionMode, markScrolling, markTyping, resetInteractionMode } from '../app/interactionMode.js'
-import { SCROLLING_IDLE_MS, TYPING_IDLE_MS } from '../config/timing.js'
-
-describe('interactionMode', () => {
-  afterEach(() => {
-    resetInteractionMode()
-    vi.useRealTimers()
-  })
-
-  it('holds scrolling mode briefly then returns idle', () => {
-    vi.useFakeTimers()
-    markScrolling()
-    expect(getInteractionMode()).toBe('scrolling')
-    vi.advanceTimersByTime(SCROLLING_IDLE_MS)
-    expect(getInteractionMode()).toBe('idle')
-  })
-
-  it('typing takes priority over scrolling', () => {
-    vi.useFakeTimers()
-    markTyping()
-    markScrolling()
-    expect(getInteractionMode()).toBe('typing')
-    vi.advanceTimersByTime(TYPING_IDLE_MS)
-    expect(getInteractionMode()).toBe('idle')
-  })
-})