Test build for #753 — not a regular release.
Fixes three default-on performance bottlenecks that made the sidebar slow to open for users with large chat histories (quadratic DOM scan per conversation row, unbudgeted single-frame mutation processing, and a misordered per-text-node check). Details in 2ab0a67.
The attached Firefox zip is unsigned: load it via about:debugging#/runtime/this-firefox → "Load Temporary Add-on…". Disable (do not uninstall) your installed Gemini Voyager first — uninstalling erases local folder data. The final fix will ship signed in v1.4.10 through AMO and the Chrome Web Store.