Hands-free "new topic": clear conversation context by voice (and maybe a glasses gesture)

[rayl15]

Problem

Starting a fresh conversation topic mid-session currently means clearing context via the + button in the History tab — i.e. reaching for the phone. For a hands-free wearable, you should be able to say "let's change subject" without touching anything.

Requested on the Product Hunt launch by @soneruludo (Soner Uludoğan):

Would love a hands-free way to start a new conversation topic mid-session, like a short double-tap gesture on the glasses to clear context without needing to open the app on my phone.

Proposed solution

Two complementary triggers:

1. Voice trigger (do first — self-contained, no SDK dependency)

   • A phrase like "Ok Vision, new topic" / "start over" / "new conversation" that clears the current context.
   • Should call ConversationManager.shared.startNewConversation() + ConversationContext.shared.clear() (same as the History "+" button), then optionally confirm ("Starting fresh").
   • Handle it in the command router (LocalAgent intent) or as a reserved command in VoiceCommandService, so it works across all backends.

2. Touchpad gesture (needs investigation)

   • A double-tap on the glasses temple to clear context.
   • Open question: does the Meta Wearables DAT SDK expose temple touch/tap gestures to third-party apps? Needs an SDK capability check before committing. If unavailable, the voice trigger stands on its own.

Pointers

• OpenVision/Managers/ConversationManager.swift — startNewConversation()
• OpenVision/Services/LocalAgent/ConversationContext.swift — clear()
• OpenVision/Services/Voice/VoiceCommandService.swift — command handling
• OpenVision/Managers/GlassesManager.swift — DAT SDK surface (for the gesture investigation)

Voice trigger is a good first-issue-sized slice; the gesture is a stretch pending SDK support.