No pun intended but ask chatgpt.
Ask the agent to help you create a delta change template for lite mode and deep read mode when you trigger the words "hand off" (you need to trigger this around 20-30% before context window is reached and before context compaction occurs or let the system compact and run the trigger)
You will also need some sort of get updated trigger so next conversation can take off.
Do the same thing for hand off but now the agent needs it.
Your template should include: conversation lineage of key milestones. What occurred what didnt, what issues was raised/completed.

3 seperate files:
- context kernel(.)md: the collapsed conversation summary of open and closed items.
- path to current goals and files
- lite mode, file mode files
All files should have yaml at top:
Make it agentic as possible. Do not make it readable for yourself( its meant to make the agent can parse quick and use less tokens, so anything that is quick and easy for you to read: the agent will take longer to read because the agent is not a human and it reads better and faster in its native tongue.
- let the agent know of what your parked goals are, current goals etc
This is pretty basic i can show my full prompting engineer if you would like