feat: Initial pipeline for Twitch highlight detection

- New 2-of-3 detection system (chat + audio + color)
- GPU support (PyTorch ROCm/CUDA ready)
- Draft mode (360p) for fast testing
- HD mode (1080p) for final render
- Auto download video + chat
- CLI pipeline script
- Documentation in Spanish

bajar

@@ -0,0 +1,45 @@
+#!/bin/bash
+
+# Instalar dependencias si no existen
+install_deps() {
+    echo "Verificando dependencias..."
+    
+    if ! command -v streamlink &> /dev/null; then
+        echo "Instalando streamlink..."
+        sudo pacman -S streamlink --noconfirm
+    fi
+    
+    if ! command -v ffmpeg &> /dev/null; then
+        echo "Instalando ffmpeg..."
+        sudo pacman -S ffmpeg --noconfirm
+    fi
+    
+    echo "Dependencias listas!"
+}
+
+# Descargar video de Twitch
+download() {
+    if [ -z "$1" ]; then
+        echo "Usage: bajar <url_twitch>"
+        echo "Ejemplo: bajar https://www.twitch.tv/videos/2699641307"
+        return 1
+    fi
+    
+    install_deps
+    
+    URL="$1"
+    OUTPUT_FILE="./$(date +%Y%m%d_%H%M%S)_twitch.mp4"
+    
+    echo "Descargando: $URL"
+    echo "Guardando en: $OUTPUT_FILE"
+    
+    streamlink "$URL" best -o "$OUTPUT_FILE"
+    
+    if [ $? -eq 0 ]; then
+        echo "¡Descarga completada! Archivo: $OUTPUT_FILE"
+    else
+        echo "Error en la descarga"
+    fi
+}
+
+download "$@"