Add user feedback checkpoints and hide internal steps

[nhorton]

Summary

Enhanced the spec-driven development job to improve user control and workflow clarity by adding mandatory feedback checkpoints and hiding internal implementation steps from the main UI.

Key Changes

• Added feedback requirement: Inserted prominent guidance in the job description requiring the system to pause after each step and wait for explicit user approval before proceeding to the next phase
• Hidden internal steps: Marked all 6 workflow steps (constitution, specify, clarify, plan, tasks, implement) as hidden: true to streamline the user interface and reduce visual clutter

Implementation Details

• The new "IMPORTANT: Pause for Feedback" section in the description emphasizes that users maintain control over the development process and can request changes at each stage
• Hiding steps prevents them from appearing in step selection menus while keeping them functional for programmatic execution
• This change ensures the workflow operates as a guided, interactive process rather than an automated pipeline