[FEATURE] Programmatic access to message queue

Use Case

Building Turbo Whisper, a voice dictation app that integrates with Claude Code. Currently using Stop/PostToolUse hooks to detect when Claude is ready for input, but this only works for timing - we can't actually queue messages while Claude is working.

Problem

When Claude is busy, users can type in the input field and messages get queued. This queue is internal - no way to add to it programmatically.

Request

Expose a way to add messages to the queue, either via:

• CLI flag: claude --queue-message "text"
• Local API endpoint
• Hook mechanism

Why It Matters

• Voice dictation users speak while Claude works, need to queue transcriptions
• Accessibility - not everyone can wait and type at the right moment
• Automation/testing tools

Happy to contribute if there's interest.