Add web UI for configuration and management

- Flask-based web interface on port 8080
- Dashboard with channel statistics and sync status
- Channel management (add/remove channels via UI)
- Settings page for all configuration options
- Cookie file upload interface
- Real-time log viewer
- Manual sync trigger from web UI
- Updated Dockerfile to include Flask and web assets
- Updated Unraid template with WebUI port
- Updated README with web UI documentation

Dockerfile

@@ -9,15 +9,18 @@ RUN apk add --no-cache \
     curl \
     tzdata \
     dcron \
-    && pip3 install --no-cache-dir yt-dlp --break-system-packages
+    && pip3 install --no-cache-dir yt-dlp flask --break-system-packages
 
 # Create directories
 RUN mkdir -p /downloads /config /app
 
-# Copy scripts
+# Copy scripts and web UI
 COPY sync.sh /app/sync.sh
 COPY entrypoint.sh /app/entrypoint.sh
-RUN chmod +x /app/sync.sh /app/entrypoint.sh
+COPY app.py /app/app.py
+COPY templates/ /app/templates/
+COPY static/ /app/static/
+RUN chmod +x /app/sync.sh /app/entrypoint.sh /app/app.py
 
 # Set working directory
 WORKDIR /app
@@ -30,6 +33,9 @@ ENV DOWNLOAD_DIR=/downloads \
     SLEEP_INTERVAL=2 \
     TZ=America/Phoenix
 
+# Expose web UI port
+EXPOSE 8080
+
 # Expose volume mount points
 VOLUME ["/downloads", "/config"]