Plan mode: add a "clear context & implement plan" action

Problem

After I finish a planning session, I almost always want the same thing. I want to keep the plan, drop all of the back and forth planning discussion, and start implementing with a clean slate. Today this is a manual routine every single time, and it is not even a clean one.

1. The planning conversation gets long and noisy, so I do not want to carry it into implementation.
2. Because of that, each time I have to ask the model to write a handoff prompt. This is a self contained summary of the plan that a fresh session can act on without the prior context.
3. Then I run /clear, paste that handoff prompt back in, and finally start implementing.

I write that handoff step by hand on every single round. It is repetitive, and it also burns tokens generating a summary that the tool could persist on its own.

Request

At the end of plan mode, for example alongside the exit plan action, please add a single action such as "Clear context and implement plan" that does the following:

1. Persists the approved plan, along with any handoff notes, automatically.
2. Clears the conversation context.
3. Starts a fresh implementation pass seeded only with that plan, with no hand written handoff prompt required.

Why

Carrying the full planning conversation into implementation wastes context and reduces focus. The current workaround forces a manual loop on every task: ask for a handoff prompt, clear, paste, then implement. A one click hand off from approved plan to fresh implementer would remove that loop entirely. For reference, OpenAI's Codex offers a similar "clear context and implement plan" option at the end of planning, and it works very well.

Workaround today

I ask the model for a handoff prompt, save the plan to a file, run /clear, then paste or prompt "implement PLAN.md". It works, but it is manual every time.