feat(app): add full motion comparison app with audio support and pose similarity analysis

config.py

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+import streamlit as st
+
+# Check for Pygame availability for audio playback
+try:
+    import pygame
+    PYGAME_AVAILABLE = True
+except ImportError:
+    PYGAME_AVAILABLE = False
+    st.warning("Pygame not installed, video will play without sound. To install: pip install pygame")
+
+# Check for MoviePy availability for audio extraction
+try:
+    from moviepy.editor import VideoFileClip
+    MOVIEPY_AVAILABLE = True
+except ImportError:
+    MOVIEPY_AVAILABLE = False
+    if PYGAME_AVAILABLE:
+        st.warning("MoviePy not installed, audio extraction from video is disabled. To install: pip install moviepy")
+
+# Check for RealSense SDK availability
+try:
+    import pyrealsense2 as rs
+    REALSENSE_AVAILABLE = True
+except ImportError:
+    REALSENSE_AVAILABLE = False
+    st.warning("Intel RealSense SDK (pyrealsense2) not found. The app will use a standard USB camera.")