[FEATURE] Command line arg to not auto-submit the provided prompt

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Currently, when Claude Code is launched with a prompt as an argument, Claude will launch and automatically run that prompt. I'm using this to generate a prompt from my app and send it to Claude, but I want my users to be able to review the prompt before it actually is executed.

Proposed Solution

For this, it would be great if a new command line argument was added, to launch Claude with a prompt already, but not auto-submit it.

Priority

Medium - Would be very helpful

Feature Category

CLI commands and flags

Use Case Example

A 3rd party app generates a prompt and launches Claude with it, but the user has a chance to see and confirm what they are going to submit before it's executed.