docs(changelog): #5437 harden ElevenLabs TTS transport (no-redirect/no-proxy opener)

CHANGELOG.md

@@ -13,6 +13,7 @@
 
 ### Fixed
 
+- **The ElevenLabs text-to-speech proxy now gets the same transport hardening as the OpenAI one.** The ElevenLabs upstream fetch previously used a plain opener that would follow redirects and honor environment proxies — meaning a redirect could carry the `xi-api-key` to another host, or an ambient proxy could intercept the request. It now routes through the same no-redirect, no-proxy opener introduced for the OpenAI TTS proxy (#5407), so the key can't be redirected elsewhere and the dial goes directly to the intended endpoint. Thanks @rodboev. (#5437, #5430)
 - **The post-update "What's New" summary cache can no longer grow without bound.** Generated update summaries were cached in `sessionStorage` with no size limit, so repeated updates could accumulate until the browser's storage quota was hit. The cache is now capped at 256KB (measured in true UTF-8 bytes), keeping the newest entries that fit and dropping the oldest under pressure. Thanks @rodboev. (#5441, #5435)
 - **Screen readers no longer announce the approval and clarify dialogs while they're inactive.** The approval and clarify flyout cards stayed in the accessibility tree and tab order even when hidden, so a screen-reader user could land on a dialog that isn't actually showing. Inactive cards are now removed from assistive tech (`aria-hidden` + `inert`) and visually hidden (`hidden` + `display:none`), and restored when shown — with the show sequence ordered so the entrance animation still plays correctly. Thanks @sheldon-im. (#5404)
 - **Mobile: the transcript no longer jumps back up while the assistant is still rendering.** On mobile browsers, the layout engine's built-in scroll-anchoring would re-compensate `scrollTop` during the height churn of a streaming response, yanking the view back toward the top (residual of #4856). The fix suppresses browser overflow-anchoring across the *full* height-churn window rather than a single frame: consecutive renders extend one shared suppression window, and an independent hard-cap timer guarantees the suppression is always lifted (so a missed transition event can't pin it). Desktop is unaffected (no-op where the browser isn't anchoring). Thanks @allenliang2022. (#5392, #4856)