While working on the modularization effort as part of Q3, we decided to move this work outside of the Q3 scope. This task is a "good to have" for enhancing modularity.

This work will involve assessing which structs that should be declared outside of wt_internal.h, where appropriate.

The current scope is limited to eviction-related structs, but we can mention the approach taken and how this can be extended to different modules as we continue to modularise more systems.

Acceptance Criteria

• Assess how to move structs outside of wt_internal.h into evict.h or evict_private.h.
• If possible, act on the above and merge into develop.
• Limit the scope to eviction for now, but document the approach for future modularisation efforts in other systems.