Add ability to jump back to plan summary after implementation

Problem

When Claude Code generates a lengthy implementation plan, the user must manually scroll up through the console to find the beginning of the plan. After implementation is complete (which can produce a lot of output), the plan is buried far up in the scroll buffer.

Suggestion

After completing a planned implementation, provide a way to quickly navigate back to (or re-print) the plan summary. Options could include:

• Re-printing a condensed version of the plan at the end of implementation
• A clickable anchor/link that jumps to the plan location in the terminal
• A slash command like /plan that re-displays the most recent plan

This would make it much easier to verify that all planned steps were completed.