Voice mode: message should auto-send when releasing Space bar

Description

In voice mode, after holding Space to record and releasing, the transcribed message requires an additional Enter keypress to send. The expected behavior (or at least a configurable option) would be for the message to auto-send upon releasing the Space bar.

Steps to reproduce

1. Enable voice mode (/voice)
2. Hold Space to record a message
3. Release Space — message is transcribed but not sent
4. Must press Enter to actually send the message

Expected behavior

Either:

• The message auto-sends after transcription when Space is released (default behavior), OR
• There is a configuration option to enable auto-send after voice transcription

Environment

• Claude Code CLI
• macOS (Darwin 25.3.0)

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