[FEATURE] Opus max effort

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

We are missing the ability to set opus thinking mode to max. This would be useful during the planning phase.

Proposed Solution

Implement the option to set effort to max.

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Configuration and settings

Use Case Example

_No response_

Additional Context

_No response_