Feature: rocketride init CLI command

[joshuadarron]

Add a rocketride init command to the CLI that initializes a RocketRide project from the terminal, without requiring an IDE.

Motivation

The VS Code extension already scaffolds a RocketRide workspace during project setup. This feature brings that same capability to the terminal so developers can initialize a project immediately after cloning a repo, with no IDE dependency.

Behavior

When a user runs rocketride init in a directory, the .rocketride/ directory should be created and populated with everything an agent needs to start building pipelines:

• Agent markdown files (context and instructions for agents working in this project)
• Pipeline templates or scaffolding
• Any other files the VS Code extension currently generates on init

Acceptance Criteria

• rocketride init works from any terminal without an IDE installed
• Output matches what the VS Code extension scaffolds (use extension as reference implementation)
• Subsequent runs should not overwrite existing files without a confirmation prompt or flag
• Command should be documented under rocketride --help

[github-actions]