docs(readme): move animated hero GIF to top banner position

README.md

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 <p align="center">
   <a href="https://cognitum.one/seed">
-    <img src="assets/ruview-seed.png" alt="RuView - WiFi DensePose" width="100%">
+    <img src="assets/ruview-hero-h3-v3.gif" alt="RuView - WiFi DensePose — animated visualization of real-time pose estimation, breathing, and heart-rate sensing through WiFi" width="100%">
   </a>
 </p>
 
@@ -17,10 +17,6 @@ Works natively with the four major smart-home ecosystems: **[Home Assistant](doc
 
 > Drop into any **Home Assistant** install with one `--mqtt` flag. Or pair into **Apple Home / Google Home / Alexa / SmartThings** as a Matter Bridge. Ships 21 entities per node (11 raw signals + 10 inferred semantic states: someone-sleeping, possible-distress, room-active, elderly-inactivity-anomaly, meeting-in-progress, bathroom-occupied, fall-risk-elevated, bed-exit, no-movement, multi-room-transition) plus 3 starter HA Blueprints. See [`docs/integrations/home-assistant.md`](docs/integrations/home-assistant.md) · [ADR-115](docs/adr/ADR-115-home-assistant-integration.md).
 
-<p align="center">
-  <img src="assets/ruview-hero-h3-v3.gif" alt="RuView WiFi DensePose — animated visualization of real-time pose estimation, breathing, and heart-rate sensing through WiFi" width="100%">
-</p>
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 ### π RuView is a WiFi sensing platform that turns radio signals into spatial intelligence.
 
 Every WiFi router already fills your space with radio waves. When people move, breathe, or even sit still, they disturb those waves in measurable ways. RuView captures these disturbances using Channel State Information (CSI) from low-cost ESP32 sensors and turns them into actionable data: who's there, what they're doing, and whether they're okay.