[DOCS] Changelog does not indicate when Claude 2.0.x started eagerly compressing

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md

Section/Topic

I don't know which date is implicated

Current Documentation

_No response_

What's Wrong or Missing?

Claude 2.0.{something} started eagerly auto-compressing context, leading many users to quickly exhaust Opus credits (#9424, #8604, #8644).

To work around I am trying to pin Claude to a version before this regression. The changelog is missing information indicating when this regression occurred.

Suggested Improvement

Please don't dismiss us users with "don't use opus". I'm using Opus to code review manually derived gradients in C++. Opus 4.1 is ok at this mathematically intensive task, whereas Sonnet 4.5 is very bad at this task. I don't need context compression, I just need 0.3-0.5 of a context of Opus to review code. 🙏

Impact

Medium - Makes feature difficult to understand

Additional Context

_No response_