docs: refresh README Animations sample with AVATAR_31_speak.gif

Swap the default-loop demo for a speak/lip-sync companion clip on the README.

Author: rosspeili

CHANGELOG.md

@@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ### Changed
 
+- README Animations sample uses `AVATAR_31_speak.gif` (lip-sync / speak loop) instead of the older default-loop clip.
 - Settings section **Motion** is now **Animation hotkeys** (same `motionDeck` settings). The Add-animation picker and the deck list keep the mouse wheel until they hit the end of their own scroll, then the Settings drawer scrolls again.
 - **Voice panel and docs spell out capture status and privacy.** Gear → **Voice** shows plain-language status (`Starting capture…`, `Capturing (local)`, …) instead of raw tokens, keeps a local-only privacy note next to the source picker, and turns permission failures into actionable copy (with a desktop button into system privacy settings on Windows/macOS). [Audio sources](docs/voice/audio-sources.md) expands permissions troubleshooting and a short “what stays local” section; the README privacy line matches. (#12)
 

README.md

@@ -123,7 +123,7 @@ Gear → **Animations** → **Default** (greeting, then motion loop). Catalog: [
 
 <p align="center">
   <img src="docs/screenshots/AVATAR_M5_Animations_Select_Greeting.gif" alt="Selecting Greeting from the Animations menu" height="400" />
-  <img src="docs/screenshots/AVATAR_M5_loop.gif" alt="Default animation loop on the companion stage" height="400" />
+  <img src="docs/screenshots/AVATAR_31_speak.gif" alt="Speaking" height="400" />
 </p>
 
 ### Swap avatars