* fix(#1194): correct inverted statusline auto-compact buffer math
The reserved-buffer percentage was computed as (acw/totalCtx)*100 — the
usable fraction — instead of (1 - acw/totalCtx)*100 — the reserved fraction.
When acw == totalCtx this produced buffer=100%, making the usable-range
denominator zero and pinning `used` at a constant 100% regardless of real
remaining context.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* chore: backfill changeset PR number (#1211)
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Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>