Observed

Compression config works as documented for static models, but `ContextCompressor.threshold_percent` is not updated on runtime model switch (`/model`, fallback activation, or primary restore) — `context_length` updates while `threshold_percent` retains the previous model's value, so compression triggers at the wrong token threshold (#18617, OPEN). Earlier dossier text that described integer `threshold: 75` being silently read as "~75 tokens" is NOT the bug #18617 tracks; that integer-coercion mechanism remains unverified.

1. UPDATE 2026-07-09(v0.18.2): #18617 re-confirmed OPEN (title and body match the per-model threshold_percent sync failure). Status remains partial.