Select specific/multiple episodes/transcripts for context

[MrGeislinger]

Could be useful for user to select relevant transcript to ask questions on.

Context window can be very large with Anthropic's claude-v1-100k model (100,000 tokens as context), so more than one podcast could be given.

However, there would have to be some sort of limiting criteria since choosing something like "ALL" transcripts could end up being larger than the fairly large context.