Allow Context Files to be sent other than all the time

Given that the current solution is context bloat for sending the context files, I would like to be able to mark each file as having a window for when it is sent with the prompt.  Here are the different ways I would want to be able to mark EACH file:

1) This file is sent only with the first X prompts.  After that it is ignored in the client.

2) This file is sent every X prompts to remind the AI of important data.

3) This file is sent after X prompt, but for no more than Y prompts.  This allows data to be inserted at a given span.

4) This file is sent for X prompts at the beginning (possibly zero) and then again any time the LLM returns a specific string match (for example, “[RESEND_FILES]” or some other trigger defined by the character).  This allows the System Prompt to define complex scenarios when the file would be sent.  This would be a simplified “agentic” model.

I think 4 is the most flexible, but also the hardest to code, though none of these would be particularly difficult.