Embed video player in README and X_POST for GitHub rendering

Replace plain .mov links with <video> tags so the screen recording
is playable inline on GitHub. Add Demo section to README.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: sanchitmonga22

Playground/android-use-agent/README.md

@@ -2,6 +2,14 @@
 
 A fully on-device autonomous Android agent powered by the RunAnywhere SDK. Navigates your phone's UI to accomplish tasks using local LLM inference via llama.cpp -- no cloud dependency required.
 
+## Demo
+
+X post demo — Qwen3 4B, 6 steps, 3 real LLM inferences, goal-aware element filtering, ~4 min end-to-end.
+
+<video src="./assets/android_agent_muted.mov" controls width="640"></video>
+
+> Full write-up and run trace: [X_POST.md](X_POST.md)
+
 ## Architecture
 
 The agent follows an observe-reason-act loop. Each step captures the current screen state, reasons about the next action using an on-device LLM, and executes that action via the Android Accessibility API.

Playground/android-use-agent/X_POST.md

@@ -4,7 +4,7 @@
 
 **Result:** ✅ PASS — Qwen3 4B, 6 steps, 3 real LLM inferences, goal-aware element filtering, ~4 min total.
 
-**Screen recording:** [`android_agent_muted.mov`](./assets/android_agent_muted.mov)
+<video src="./assets/android_agent_muted.mov" controls width="640"></video>
 
 ---
 
@@ -195,7 +195,7 @@ Tweet posted live during screen recording. Agent status: **DONE** (green), logs:
 > **Hi from RunAnywhere Android agent**
 > — @RunAnywhereAI · Feb 20, 2026
 
-**Screen recording:** [`android_agent_muted.mov`](./assets/android_agent_muted.mov)
+<video src="./assets/android_agent_muted.mov" controls width="640"></video>
 
 ---