Feature Request: Auto-submit after voice dictation (push-to-talk)

Problem

When using voice dictation (hold Space to record, release to transcribe), the user still has to press Enter to submit. This breaks the hands-free voice workflow.

Proposed Solution

Either:

1. A setting like voice:autoSubmit (boolean) that automatically submits the prompt when the spacebar is released and transcription completes.

1. A new hook event like VoiceDictationComplete that fires when transcription finalizes, allowing users to configure auto-submit via hooks.

Use Case

Users who rely on voice input want a fully hands-free experience — hold space, speak, release, and the prompt submits automatically. Having to reach for Enter breaks the flow.

Current Behavior

1. Hold Space → records audio
2. Release Space → transcribes text into input
3. Must press Enter to submit

Expected Behavior

1. Hold Space → records audio
2. Release Space → transcribes text and auto-submits