Update onboarding voice shortcut example question

[kodjima33]

Summary

• replace the generic/weather example in the merged voice shortcut onboarding step
• tell users to try asking "What's on my screen?" instead

Verification

• xcrun swift build -c debug --package-path /private/tmp/omi-onboarding-audio-copy/desktop/Desktop
• source diff confirmed the onboarding copy now references "What's on my screen?"

Note

• a fast binary swap into the older ad-hoc Omi Audio bundle failed because that local bundle has stale framework layout; this change is copy-only and compiled cleanly from the fresh worktree

[greptile-apps]

Greptile Summary

This PR is a copy-only change to the macOS desktop onboarding flow, replacing a generic weather example question with "What's on my screen?" to better showcase the screen-awareness feature during the voice shortcut setup step. No logic, layout, or behavioral changes are introduced.

• Updates the left-pane instructional paragraph to embed "What's on my screen?" as a concrete example of what to ask while holding the shortcut key
• Replaces the right-pane hint text "Try asking: \"What's the weather in my city?\"" with "Try asking: \"What's on my screen?\""
• Both panes now consistently reference the same example question, which is a stronger demonstration of a platform-specific capability than the previous weather query
• No localization strings or l10n keys are used in this file (raw Text(...) literals throughout), which is consistent with the rest of the file and the existing pattern — no regression introduced here

Confidence Score: 5/5

• This PR is safe to merge — it is a pure UI copy change with no logic, state, or behavioral impact.
• Only two string literals are changed in a single Swift UI file. No logic, layout, state management, or external integrations are touched. The change compiled cleanly per the PR author's verification, and the new copy is contextually appropriate for a screen-awareness feature demo.
• No files require special attention.

Important Files Changed

Filename	Overview
desktop/Desktop/Sources/OnboardingVoiceShortcutStepView.swift	Copy-only change: replaces the generic "speak" instruction and "What's the weather in my city?" example with "What's on my screen?" in both the left-pane description and the right-pane hint text. No logic changes.

Sequence Diagram

sequenceDiagram
    participant User
    participant OnboardingVoiceShortcutStepView
    participant PushToTalkManager
    participant FloatingControlBarManager

    User->>OnboardingVoiceShortcutStepView: View appears (onAppear)
    OnboardingVoiceShortcutStepView->>FloatingControlBarManager: setup(appState, chatProvider)
    FloatingControlBarManager-->>OnboardingVoiceShortcutStepView: barState
    OnboardingVoiceShortcutStepView->>PushToTalkManager: setup(barState)

    Note over OnboardingVoiceShortcutStepView: Shows hint: "Try asking: What's on my screen?"

    User->>PushToTalkManager: Hold shortcut key
    PushToTalkManager-->>OnboardingVoiceShortcutStepView: state = .listening
    OnboardingVoiceShortcutStepView->>OnboardingVoiceShortcutStepView: observedShortcutPress = true

    User->>PushToTalkManager: Release shortcut key
    PushToTalkManager-->>OnboardingVoiceShortcutStepView: state = .idle (after finalizing)
    OnboardingVoiceShortcutStepView->>OnboardingVoiceShortcutStepView: showContinue = true (hint hidden, Continue button shown)

    User->>OnboardingVoiceShortcutStepView: Tap "Continue"
    OnboardingVoiceShortcutStepView->>OnboardingVoiceShortcutStepView: onComplete()

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_{Last reviewed commit: 35865fd}