[FEATURE] Set default model for compaction (ie, I'm using Opus but /compact uses haiku)

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

More expensive models compact at their token spend/take longer. Can even 'overthink' on what should be saved or discarded.

Proposed Solution

Since Haiku is recommended by Claude itself for compaction, and it runs faster and does a great job, I would like to set Haiku as a default for compaction without switching models.

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Configuration and settings

Use Case Example

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Additional Context

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