Agent behavior much different for o4-mini, o3

[rpggio]

Apart from the questions I raised above, this feature request would help the situation:

Re-use of context assembled by Agent

For some models (o4-mini, o3, for example), Agent spends a lot of time building up context before actually running the big model. It would be great if we could re-use that built context, whether by: A named resource reference reference-able by @, either created automatically or by clicking button a chat response Or, chat conversation forking: Like ‘New chat’, but from any response in the thread. Impact: With the time it takes to bootstrap a chat thread now, this would be a huge time saving…