[FEATURE REQUEST]: Sending keys to background bashes

It would make claude code handle all the nuances like setting up projects interactively. Even manage sub agents better. tmux send-keys is somethying I am looking for.

Problems it will solve:

• Sub agent steering
• Dealing with interactive clis
• long running CLIs like flutter run
• connecting ftp, tcp or any other protocol for that matter

Effort: Low/Medium
Value: High