Auto-Start for fancy-profiles

[rtmiz]

What happened

• Added automatic server start functionality via URL permalink parameter (autoStart=true)
• Consolidated "Build Image" and "Start" buttons into a single "Build Image and Start" button for the custom image builder workflow
• Set autoStart: false in copied permalinks by default to make creating auto-start URLs easier (users can manually change to true)

Any pull quotes?

"Auto-starting servers from permalinks streamlines the user experience - from clicking a link to having a running server with zero additional clicks."

Why is it valuable

• Reduces friction for users - they can share direct-to-server links that automatically launch their environment
• Improves the custom image building workflow by combining two separate actions (build and start) into one streamlined process
• Makes it easier to create reproducible environments that can be shared with colleagues or students
• Enables better integration with external tools and documentation that want to provide "one-click" access to JupyterHub environments

Links to learn more

• ImageBuilder.tsx - Main implementation of consolidated build/start button
• ProfileForm.tsx - Auto-start logic triggered by permalink parameter
• context/Permalink.tsx - Permalink generation with autoStart parameter

Images